Mr. Slim® Products – Guide Specifications
M-Series
Ductless Mini-splits MS
Ductless Mini-splits MSY
Ductless Mini-splits MSZ
High Efficiency Ductless Mini-splits MSZ-FD
Ductless Mini-splits MXZ
P-Series
PKA (wall-mounted) Air Conditioner series
PKA (wall mounted) Heat Pump series
PLA-A**BA (Ceiling Cassette) Air Conditioner
PLA-A**BA (Ceiling Cassette) Heat Pump
PCA (ceiling suspended) Cooling only
PCA (ceiling suspended) Heat Pump
PEA (Ducted) Cooling only
PEA (Ducted) Cooling only
M-Series
HVAC Guide Specifications
Ductless Mini-splits MS
Section 15700 – Mechanical HVAC
Capacity Range: 0.75 to 1 Ton Nominal
Mitsubishi Electric Model Number: MS (wall-mount) Cooling only system with wireless
remote controller
Part 1 - General
1.01 System Description
The air conditioning system shall be a Mitsubishi Electric MS split system series. The system
shall consist of a slim silhouette, compact, wall mounted indoor fan coil section with wireless
remote controller and a slim silhouette horizontal discharge outdoor unit with constant speed
compressor, charged with R410A refrigerant.
System Model Numbers
Indoor Unit
Outdoor Units
MS-A09WA
MU-A09WA
MS-A12WA
MU-A12WA
1.02 Quality Assurance
a) The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)) and bear the
ETL label.
b) All wiring shall be in accordance with the National Electrical Code (N.E.C.).
c) The units shall be rated in accordance with Air-conditioning Refrigeration Institute’s (ARI)
Standard 210 and bear the ARI Certification label.
d) The units shall be manufactured in a facility registered to ISO 9001 and ISO14001 which are a
set of standards applying to environmental protection set by the International Standard
Organization (ISO).
e) A pressure charge of R410A refrigerant sufficient for 25 feet of refrigerant tubing shall be
provided in the condensing unit.
f) A dry air holding charge shall be provided in the indoor section.
g) System efficiency shall meet or exceed 13.0 SEER.
1.03 Delivery, Storage and Handling
a) Unit shall be stored and handled according to the manufacturer’s recommendation.
b)The wireless controller shall be shipped inside the carton with the indoor unit and able to
withstand 105°F storage temperatures and 95% relative humidity without adverse effect.
Part 2 - Warranty
2.01 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year
from the date of the original installation. The compressor shall have a warranty of 6 years
from date of installation. If, during this period, any part should fail to function properly due
to defects in workmanship or material, it shall be replaced or repaired at the discretion of
the manufacturer. This warranty does not include labor.
Page 2 of 82
Mr. Slim MS Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
2.02 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 - Performance
3.01 Each system shall perform in accordance with the ratings shown in the table below.
3.02 Cooling performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for
the indoor unit and 95°F DB, 75°F WB (35°C DB, 23.9°C WB) for the outdoor unit:
System Model Cooling Capacity
Number
Btu/h
MS-A09WA
9500
MS-A12WA
12000
TPW = Total Power Watts.
TPW
SEER
CFM (Hi)
870
1070
13
13
335
406
Part 4 – Product
4.0 Indoor Unit General
a) The indoor unit shall be factory assembled, wired and run tested. Contained within the unit
shall be all factory wiring, internal piping, control circuit board and fan motor.
b) The unit shall have a self-diagnostic function, 3-minute time delay mechanism, an auto restart
function, an emergency operation function and a test run switch.
c) Indoor unit and refrigerant pipes shall be charged with dry air before shipment from the
factory.
4.01 Unit Cabinet
a) The casing shall have a white finish.
b) Multi directional drain and refrigerant piping offering four (4) directions for refrigerant piping
and two (2) directions for draining shall be standard.
c) There shall be a separate installation plate which secures the unit firmly to the wall.
4.02 Fan
a) The indoor unit fan shall be an assembly with a line-flow fan direct driven by a single motor.
b) The fan shall be statically and dynamically balanced and run on a motor with permanently
lubricated bearings.
c) A manual adjustable vertical guide vane shall be provided with the ability to change the
airflow from side to side (left to right).
d) An integral, motorized air sweep flow louver shall provide an automatic change in airflow by
directing the air up and down to provide for uniform air distribution.
e) The indoor unit fan motor shall operate in three (3) selectable speeds, High, Medium and Low.
4.03 Filter
Return air shall be filtered by means of easily removed Catechin air filter and an anti-allergy
enzyme filter – blue bellows type.
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4.04 Coil
a) The indoor unit (evaporator) coil shall be of nonferrous construction with smooth, pre-coated
aluminum fins on copper tubing.
b) Tubing shall have inner groves for high efficiency heat exchange
c) All tube joints shall be brazed with PhosCopper or silver alloy.
d) The coil shall be pressure tested at the factory.
e) A sloped condensate pan and drain with extension hose shall be provided under the coil.
4.05 Electrical
a) The electrical power of the unit, supplied from the outdoor unit shall be 115 volts, 1 phase, 60
hertz. The system shall be capable of satisfactory operation within voltage limits of 103 volts to
127 volts.
b) The unit shall be equipped with Mitsubishi Electric’s micro-processor control system
directing indoor and outdoor unit coordinated operation by two polarity sensitive control wires.
c) The indoor unit shall not have any supplemental electrical heat elements.
4.06 Control
a) This system shall have a wireless remote controller to perform input functions necessary to
operate the system. The controller shall consist of a Power On/Off switch, Mode Selector,
Temperature Setting, Timer Control, Fan Speed Select and Auto Vane Selector.
b) Temperature changes shall be by 1°F increments with a range of 65°F to 87°F.
c) There shall be a 24 hour On/Off timer.
d) The unit shall have an emergency operation mode to allow operation without the remote
controller.
e) The microprocessor located in the indoor unit shall have the capability of sensing return air
temperature and indoor coil temperature, receiving and processing commands from the wireless
remote controller, providing emergency operation and controlling the outdoor unit.
f) The control voltage between the indoor unit and the outdoor unit shall be115 volts, AC.
g) The system shall be capable of automatic restart when power is restored after power
interruption.
h) The control system shall control the operation of the air sweep louvers, as well as provide
on/off and system/mode function switching.
4.07 Outdoor Unit General
The outdoor unit is designed specifically for use with MS series indoor units. These units are
equipped with a circuit board that interfaces to the MS indoor unit circuit board. The outdoor
unit shall be completely factory assembled, internally piped and wired. Each unit shall be run
tested at the factory.
4.08 Unit Cabinet
a) The casing shall be fabricated from zinc coated steel, bonderized with an electrostatically
applied, thermally bonded, acrylic or polyester powder coating for corrosion protection.
b) Case and mounting feet shall be as follows:
The MS-A09WA base shall be of Aluminum-Zinc-Magnesium alloy coated steel, with
welded mounting feet.
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The base for the MS-A12WA shall have a galvanized steel base with welded mounting
feet.
4.09 Fan
a) The unit shall be furnished with a direct drive propeller type fan, statically and
dynamically balanced for smooth and quiet operation.
b) The fan motor shall have inherent protection, be equipped with permanently lubricated
bearings. The fan motor shall be mounted and isolated for quiet operation.
c) The fan shall be provided with a raised guard to prevent contact with moving parts.
d) The outdoor unit shall have horizontal discharge airflow.
4.10 Coil
a) The condenser coil shall be of nonferrous construction with pre-coated aluminum strake
fins on copper tubing.
b) The coil shall be protected with an integral metal guard.
c) Refrigerant flow from the condenser shall be controlled by means of a metering orifice.
4.11 Compressor
a) The compressor shall be a Mitsubishi Electric high performance, hermetic, rolling piston,
rotary type.
b) Compressor shall be mounted using rubber isolating bushings to avoid the transmission
of vibration.
c) Compressor shall be protected by an automatic over current relay and a thermal overload
switch
4.12 Operation
a) The outdoor unit shall have an accumulator.
b) The outdoor unit must have the ability to operate with a maximum height difference of 35
feet between indoor and outdoor units.
c) The unit shall have a maximum refrigerant tubing length of 65 feet between indoor and
outdoor units without the need for line size changes, traps or additional oil.
d) The unit shall be pre-charged for a maximum of 25 feet of refrigerant tubing.
4.13 Electrical
a) The electrical power of the system shall be 115 volts, 1 phase, 60 hertz. The unit shall be
capable of satisfactory operation within voltage limits of 103 volts to 127 volts.
b) The outdoor unit shall be controlled by the microprocessor located in the indoor unit. The
control voltage between the indoor unit and the outdoor unit shall be 115 volts, AC.
Page 5 of 82
Mr. Slim MS Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits MSY
Section 15700 – Mechanical HVAC
Capacity Range: 1.25 to 3 Ton Nominal
Mitsubishi Model Number: MSY-A/D (wall-mount) inverter air conditioning series.
Part 1 – General
1.01 System Description
A. The air conditioning system shall be a Mitsubishi Electric MSY-A/D split system series.
The system shall consist of a slim silhouette, compact, wall mounted indoor fan coil section
with wireless remote controller and a slim silhouette horizontal discharge outdoor unit which
shall be of an inverter driven air conditioner design.
B. Indoor unit model numbers may be MSYA15NA, MSYA17NA, MSYA24NA,
MSYD30NA, and MSYD36NA. Outdoor unit model numbers may be MUYA15NA,
MUYA17NA, MUYA24NA, MUYD30NA, and MUYD36NA for single-zone (1:1) systems
1.02 Quality Assurance
A. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL) and
shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning, Heating, and
Refrigeration Institute’s (AHRI) Standard 210 and bear the AHRI Certification label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. System efficiency shall meet or exceed 15 SEER when part of a 1:1 (indoor/outdoor)
system.
G. Delivery, Storage and Handling
a.
Unit shall be stored and handled according to the manufacturer’s
recommendations.
b.
The wireless controller shall be shipped inside the carton with the indoor
unit and able to withstand 105°F storage temperatures and 95% relative
humidity without adverse effect.
Part 2 – Warranty
2.03 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year
from date of installation. The compressor shall have a warranty of 6 years from date of
installation. If, during this period, any part should fail to function properly due to defects in
workmanship or material, it shall be replaced or repaired at the discretion of the
manufacturer. This warranty does not include labor.
2.04 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Page 6 of 82
Mr. Slim MSY Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
Part 3 - Performance
3.02 Each system shall perform in accordance to the ratings shown in the table below.
Performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the indoor
unit and 95°F DB, 75°F WB (35°C DB, 23.9°C WB) for the outdoor unit at rated
frequency: A15-77Hz, A17-89Hz, A24-110Hz, D30 – 79Hz , D36 – 92Hz .
System Model
Number
Cooling Capacity
Btu/h*
TPW
Cooling*
SEER
CFM (Hi)
MSYA15NA
3,100 - 15,000
210 – 1,690
16
381
MSYA17NA
3,100 - 16,200
210 – 2,070
16
381
MYSA24NA
4,400 - 22,000
290 – 2,880
16
568
MSYD30NA
9,800 – 30,700
620 – 3,380
16
848
MSYD36NA
9,800 – 34,600
620 – 4,240
15.1
848
TPW = Total Power Watts.
Operating Range
Cooling Maximum
Minimum
* AHRI 210 / 240 Test Conditions
Indoor Air Intake Temperature
D.B. 90°F (32.2°C) W.B. 73°F (22.7°C)
D.B. 67°F (19.4°C) W.B. 57°F (13.8°C)
Outdoor Air Intake Temperature
D.B. 115°F (46.1°C)
D.B. 14°F (-10°C)
Part 4 - Products
4.01: Indoor Unit
A. General:
The indoor unit shall be factory assembled, wired and run tested. Contained within the unit
shall be all factory wiring, piping, control circuit board, fan and fan motor. The unit shall
have a self-diagnostic function, 3-minute time delay mechanism, an auto restart function, an
emergency operation function. Indoor unit shall be charged with dry air before shipment
from factory.
B. Unit Cabinet:
1. The casing shall have a white finish – Munsell 1.0Y 9.2/0.2.
2. Multi directional drain connection and refrigerant piping, offering three (3) direction
pipe alignments for all refrigerant piping and two (2) direction pipe alignments for
condensate draining shall be standard.
3. There shall be a separate, metal back-plate that secures the indoor unit firmly to the wall.
The back plate shall be securely attached to the wall.
C. Fan:
1. The indoor unit fan shall be an assembly with a line-flow fan direct driven by a single
motor.
2. The fan shall be statically and dynamically balanced and be powered by a motor with
permanently lubricated bearing.
3. A manual adjustable guide vane shall be provided with the ability to change the
airflow from side to side (left to right).
Page 7 of 82
Mr. Slim MSY Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
3.1 Units having capacity greater than 18,000 BTU/h shall have a “Wide
Vane” feature to distribute airflow over a wide – 150 degree – angle from right to left
to provide comfort over a wider area.
4. An integral, motorized, multi-position, horizontal air sweep flow louver shall provide
for uniform air distribution, up and down.
5. The indoor fan shall operate at of three (3) selectable speeds: High, Medium and Low.
D. Filter:
1. Return air shall be filtered by means of easily removed, washable, Catechin,
Antioxidant Pre-filter and an Anti-allergy enzyme filter – blue, pleated type.
E. Coil:
1. The indoor unit coil shall be of nonferrous construction with smooth plate fins on
copper tubing.
2. The tubing shall have inner groves for high efficiency heat exchange.
3. All tube joints shall be brazed with phoscopper or silver alloy.
4. The coils shall be pressure tested at the factory.
5. A sloped, corrosion resistant condensate pan with drain shall be provided under the
coil.
F. Electrical:
1. The unit electrical power shall be 208-230 volts, 1-phase, 60 hertz.
2. The system shall be equipped with A-Control – a system directing that the indoor unit
be powered directly from the outdoor unit using a 3-wire connection plus ground.
3. The outdoor unit shall be equipped with Pulse Amplitude Modulation (PAM)
compressor motor control for maximum efficiency.
4.02: Control
A. General:
1. The unit shall have a wireless controller to perform input functions necessary to
operate the system.
2. The wireless controller shall have a Power On/Off switch, Mode Selector – Cool, Dry,
Fan Modes - Temperature Setting, Timer Control, Fan Speed Select and Auto Vane
selector.
3. The indoor unit shall perform Self-diagnostic Function and Check Mode switching.
4. Temperature changes shall be by 1ºF increments with a range of 59 - 89ºF.
5. The microprocessor located in the indoor unit shall have the capability of sensing
return air temperature and indoor coil temperature, receiving and processing
commands from the wireless or a wired controller, providing emergency operation
and controlling the outdoor unit.
6. The system shall be capable of automatically restarting and operating at the
previously selected conditions when the power is restored after power interruption.
7. Control system shall control the continued operation of the air sweep louvers, as well
as provide On/Off, System/Mode function.
8. The indoor unit shall have the option of a field installed, multi-function, hard-wired,
wall mounted remote controller. Controller shall be a PAR-21MAA Deluxe MA type
remote controller.
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Mr. Slim MSY Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
8.1. Hard-wired, wall mounted remote controller shall require a MAC-397IF-E MA
Series Terminal Interface for communications. Interface will be mounted at the
indoor unit.
4.03: Outdoor Units
General:
The MUY Series outdoor units are specifically designed to work with the MSY indoor
units. The outdoor units must have a thermally fused powder coated finish. The outdoor
unit shall be completely factory assembled, piped and wired. Each unit shall be run tested
at the factory.
A. Unit Cabinet:
1. The casing shall be fabricated of galvanized steel, bonderized, finished with an
electrostatically applied, thermally fused acrylic or polyester powder coating for corrosion
protection.
B. Fan:
1. The unit shall be furnished with a direct drive propeller type fan.
2. The outdoor unit fan motor shall be a direct current (DC) motor and have
permanently lubricated bearings.
3. The fan motor shall be mounted for quiet operation.
4. The fan shall be provided with a raised guard to prevent contact with moving parts.
5. The outdoor unit shall have horizontal discharge airflow.
C. Coil:
1. The outdoor unit coil shall be of nonferrous construction with lanced or corrugated
plate fins on copper tubing.
2. The coil shall be protected with an integral metal guard.
3. Refrigerant flow from the outdoor unit shall be regulated by means of an
electronically controlled, precision, leaner expansion valve.
D: Compressor:
1. The compressor motor shall be direct current (DC).
2. The compressor shall be of a high performance hermetic; inverter driven, variable
speed, rotary type.
3. The outdoor unit shall have an accumulator.
4. The compressor will be equipped with an internal thermal overload.
5. The outdoor unit must have the ability to operate over the full range with a
maximum height difference of 40 feet and have refrigerant tubing length of 65 feet for
capacities up to 18,000 BTU/h and a maximum height difference of 50 feet and have
refrigerant tubing length of 100 feet for capacities above 18,000 BTU/h between indoor
and outdoor units.
6. There shall be no need for line size changes, traps shall not be used, and no
additional refrigerant oil shall be required.
7. The compressor shall be mounted so as to avoid the transmission of vibration.
E. Electrical:
1. The unit electrical power shall be 208/230 volts, 1-phase, 60 hertz.
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2. The unit shall be capable of satisfactory operation within voltage limits of 198 volts
to 253 volts.
3. The outdoor unit shall be controlled by microprocessors located in the indoor
unit and outdoor unit.
Page 10 of 82
Mr. Slim MSY Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits MSZ
Section 15700 – Mechanical HVAC
Capacity Range: 0.75 to 3 Ton Nominal
Mitsubishi Model Number: MSZ-A/D (wall-mount) inverter heat pump series.
Part 1 – General
1.02 System Description
A. The heat pump air conditioning system shall be a Mitsubishi Electric MSZ-A split
system series. The system shall consist of a slim silhouette, compact, wall mounted indoor
fan coil section with wireless remote controller and a slim silhouette horizontal discharge
outdoor unit which shall be of an inverter driven heat pump design.
B. Indoor unit model numbers may be MSZA09NA, MSZA12NA, MSZA15NA,
MSZA17NA, MSZA24NA, MSZD30NA, and MSZD36NA. Outdoor unit model numbers
may be MUZA09NA, MUZA12NA, MUZA15NA, MUZA17NA, MUZA24NA,
MUZD30NA, and MUZD36NA for single-zone (1:1) systems
1.02 Quality Assurance
A. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL) and
shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning, Heating, and
Refrigeration Institute’s (AHRI) Standard 240 and bear the AHRI Certification label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. System efficiency shall meet or exceed 14.5 SEER when part of a 1:1 (indoor/outdoor)
system.
G. Delivery, Storage and Handling
a. Unit shall be stored and handled according to the manufacturer’s
recommendations.
b. The wireless controller shall be shipped inside the carton with the indoor unit
and able to withstand 105°F storage temperatures and 95% relative humidity
without adverse effect.
Part 2 – Warranty
2.01 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year
from date of installation. The compressor shall have a warranty of 6 years from date of
installation. If, during this period, any part should fail to function properly due to defects in
workmanship or material, it shall be replaced or repaired at the discretion of the
manufacturer. This warranty does not include labor.
2.02 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Page 11 of 82
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Part 3 – Performance
3.01 Each system shall perform in accordance with the ratings shown in the table below.
3.02 Cooling performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for
the indoor unit and 95°F DB, 75°F WB (35°C DB, 23.9°C WB) for the outdoor unit at rated
frequency: A09-50Hz, A12-76Hz, A15-77Hz, A17-89Hz, A24-110Hz, D30 – 89Hz , D36
– 92Hz
3.03 Heating performance shall be based on 70ºF DB, 60 ºF WB (21.1ºC DB, 15.6ºC WB) for
the indoor unit and 47 º F DB, 43º F WB (8.3 º C DB, 6.1º C WB) for the outdoor unit at
rated frequency: A09-61Hz, A12-76Hz, A15-78Hz, A17-88Hz, A24-101Hz, D30 – 84Hz ,
D36 – 91Hz
3.04 Single-Zone One-to-One Product Table – Heat Pump
Outdoor / Indoor Model Numbers
TC
Cooling*
TC
Heating*
TPW
Cooling*
TPW
Heating*
SEER
HSPF
MUZ-A09NA / MSZ-A09NA
MUZ-A12NA / MSZ-A12NA
MUZ-A15NA / MSZ-A15NA
MUZ-A17NA / MSZ-A17NA
MUZ-A24NA / MSZ-A24NA
MUZ-D30NA / MSZ-D30NA
MUZ-D36NA / MSZ-D36NA
9,000
12,000
15,000
16,200
22,000
30,700
33,200
10,900
13,600
18,000
20,100
23,200
32,600
35,200
690
1170
1690
2070
2880
3,850
4,360
860
1160
1790
2150
2350
3,360
3,840
17
17
16
16
16
14.5
14.5
8.2
8.2
8.2
8.2
8.2
8.2
8.2
*TC = Total Capacity, TPW = Total Power Watts
*AHRI 210/240 testing conditions
Part 4 – Products
4.01: Indoor Unit
A. General:
The indoor unit shall be factory assembled, wired and run tested. Contained within the unit
shall be all factory wiring, piping, control circuit board, fan and fan motor. The unit shall
have a self-diagnostic function, 3-minute time delay mechanism, and an auto restart function.
Indoor unit shall be charged with dry air before shipment from factory.
B. Unit Cabinet:
1. The casing shall have a white finish – Munsell 1.0Y 9.2/0.2.
2. Multi directional drain connection and refrigerant piping, offering three (3) direction
pipe alignments for all refrigerant piping and two (2) direction pipe alignments for
condensate draining shall be standard.
3. There shall be a separate, metal back-plate that secures the indoor unit firmly to the wall.
The back plate shall be securely attached to the wall.
C. Fan:
1. The indoor unit fan shall be an assembly with a line-flow fan direct driven by a single
motor.
2. The fan shall be statically and dynamically balanced and be powered by a motor with
permanently lubricated bearing.
3. A manual adjustable guide vane shall be provided with the ability to change the
airflow from side to side (left to right).
Page 12 of 82
Mr. Slim MSZ Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
3.1 Units having capacity greater than 18,000 BTU/h shall have a “Wide
Vane” feature to distribute airflow over a wide – 150 degree – angle from right to left
to provide comfort over a wider area.
4. An integral, motorized, multi-position, horizontal air sweep flow louver shall provide
for uniform air distribution, up and down.
5. The indoor fan shall operate at of three (3) selectable speeds: High, Medium and Low.
D. Filter:
1. Return air shall be filtered by means of easily removed, washable, Catechin,
Antioxidant Pre-filter and an Anti-allergy enzyme filter – blue, pleated type.
E. Coil:
1. The indoor unit coil shall be of nonferrous construction with smooth plate fins on
copper tubing.
2. The tubing shall have inner groves for high efficiency heat exchange.
3. All tube joints shall be brazed with phoscopper or silver alloy.
4. The coils shall be pressure tested at the factory.
5. A sloped, corrosion resistant condensate pan with drain shall be provided under the
coil.
F. Electrical:
1. The unit electrical power shall be 208-230 volts, 1-phase, 60 hertz.
2. The system shall be equipped with A-Control – a system directing that the indoor unit
be powered directly from the outdoor unit using a 3-wire connection plus ground.
3. The indoor unit shall not have any supplemental electrical heat elements.
4. The outdoor unit shall be equipped with Pulse Amplitude Modulation (PAM)
compressor motor control for maximum efficiency.
4.02: Control
A. General:
1. The unit shall have a wireless controller to perform input functions necessary to
operate the system.
2. The wireless controller shall have a Power On/Off switch, Mode Selector – Cool, Dry,
Heat, Auto Modes - Temperature Setting, Timer Control, Fan Speed Select and Auto
Vane selector.
3. The indoor unit shall perform Self-diagnostic Function and Check Mode switching.
4. Temperature changes shall be by 1ºF increments with a range of 59 - 89ºF.
5. The microprocessor located in the indoor unit shall have the capability of sensing
return air temperature and indoor coil temperature, receiving and processing
commands from the wireless or a wired controller, providing emergency operation
and controlling the outdoor unit.
6. The indoor units shall be capable of working with single-zone or multi-zone outdoor
units
7. The system shall be capable of automatically restarting and operating at the
previously selected conditions when the power is restored after power interruption.
Page 13 of 82
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8. Control system shall control the continued operation of the air sweep louvers, as well
as provide On/Off, System/Mode function.
9. The indoor unit shall have the option of a field installed, multi-function, hard-wired,
wall mounted remote controller. Controller shall be a PAR-21MAA Deluxe MA type
remote controller
9.1. Hard-wired, wall mounted remote controller shall require a MAC-397IF-E
MA Series Terminal Interface for communications. Interface will be mounted at the
indoor unit.
4.03: Outdoor Units
General:
The MUZ Series outdoor units are specifically designed to work with the MSZ indoor
units. The outdoor units must have a thermally fused powder coated finish. The outdoor
unit shall be completely factory assembled, piped and wired. Each unit shall be run tested
at the factory.
A. Unit Cabinet:
1. The casing shall be fabricated of galvanized steel, bonderized, finished with an
electrostatically applied, thermally fused acrylic or polyester powder coating for corrosion
protection.
B. Fan:
1. The unit shall be furnished with a direct drive propeller type fan.
2. The outdoor unit fan motor shall be a direct current (DC) motor and have
permanently lubricated bearings.
3. The fan motor shall be mounted for quiet operation.
4. The fan shall be provided with a raised guard to prevent contact with moving parts.
5. The outdoor unit shall have horizontal discharge airflow.
C. Coil:
1. The outdoor unit coil shall be of nonferrous construction with lanced or corrugated
plate fins on copper tubing.
2. The coil shall be protected with an integral metal guard.
3. Refrigerant flow from the outdoor unit shall be regulated by means of an
electronically controlled, precision, leanier expansion valve.
D. Compressor:
1. The compressor motor shall be direct current (DC).
2. The compressor shall be of a high performance hermetic; inverter driven, variable
speed, rotary type.
3. The outdoor unit shall have an accumulator.
4. The compressor will be equipped with an internal thermal overload.
5. The outdoor unit must have the ability to operate over the full range with a
maximum height difference of 40 feet and have refrigerant tubing length of 65 feet for
capacities up to 18,000 BTU/h and a maximum height difference of 50 feet and have
refrigerant tubing length of 100 feet for capacities above 18,000 BTU/h between indoor
and outdoor units.
6. There shall be no need for line size changes, traps shall not be used, and no
additional refrigerant oil shall be required.
Page 14 of 82
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7. The compressor shall be mounted so as to avoid the transmission of vibration.
E. Electrical:
1. The unit electrical power shall be 208/230 volts, 1-phase, 60 hertz.
2. The unit shall be capable of satisfactory operation within voltage limits of 198 volts
to 253 volts.
3. The outdoor unit shall be controlled by the microprocessor located in the indoor
unit and outdoor unit.
Page 15 of 82
Mr. Slim MSZ Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Efficiency Ductless Mini-splits MSZ-FD
Section 15700 – Mechanical HVAC
Capacity Range: 0.75 to 3 Ton Nominal
Mitsubishi Model Number: MSZ-FD High Efficiency (wall-mount) inverter heat
pump series.
Part 1 – General
1.03 System Description
A. The heat pump air conditioning system shall be a Mitsubishi Electric MSZ-FD High
Efficiency, ductless split system series. The system shall consist of a slim silhouette,
compact, wall mounted indoor fan coil section with wireless remote controller and a slim
silhouette horizontal discharge outdoor unit which shall be of an inverter driven, high
efficiency, heat pump design.
B. Indoor unit model numbers may be MSZFD09NA and MSZFD12NA. Outdoor unit
model numbers may be MUZFD09NA and MUZFD12NA for single-zone (1:1) systems.
C. Systems shall be designed to use R-410a refrigerant
1.02 Quality Assurance
A. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL) and
shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning, Heating, and
Refrigeration Institute’s (AHRI) Standard 240 and bear the AHRI Certification label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. System efficiency shall meet or exceed 22.0 SEER when part of a 1:1 (indoor/outdoor)
system.
G. Delivery, Storage and Handling
a. Unit shall be stored and handled according to the manufacturer’s
recommendations.
b. The wireless controller shall be shipped inside the carton with the indoor unit
and able to withstand 105°F storage temperatures and 95% relative humidity
without adverse effect.
Part 2 – Warranty
2.01 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year
from date of installation. The compressor shall have a warranty of 6 years from date of
installation. If, during this period, any part should fail to function properly due to defects in
workmanship or material, it shall be replaced or repaired at the discretion of the
manufacturer. This warranty does not include labor.
2.02 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Page 16 of 82
Mr. Slim MSZ-FD Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
Part 3 – Performance
3.01 Each system shall perform in accordance with the ratings shown in the table below.
3.02 Cooling performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for
the indoor unit and 95°F DB, 75°F WB (35°C DB, 23.9°C WB) for the outdoor unit at rated
frequency: A09-35Hz, A12-51Hz.
3.03 Heating performance shall be based on 70ºF DB, 60 ºF WB (21.1ºC DB, 15.6ºC WB) for
the indoor unit and 47 º F DB, 43º F WB (8.3 º C DB, 6.1º C WB) for the outdoor unit at
rated frequency: A09-43Hz, A12-54Hz.
3.04 Single-Zone One-to-One Product Table – High Efficiency Heat Pump
Outdoor / Indoor Model Numbers
TC
Cooling*
TC
Heating*
TPW
Cooling*
TPW
Heating*
SEER
HSPF
MUZ-FD09NA / MSZ-FD09NA
MUZ-FD12NA / MSZ-FD12NA
9,000
12,000
10,900
13,600
650
960
750
980
23.0
22.0
7.4
7.4
TC = Total Capacity, TPW = Total Power Watts
*AHRI 210/240 testing conditions
Part 4 – Products
4.01: Indoor Unit
A. General:
The indoor unit shall be factory assembled, wired and run tested. Contained within the unit
shall be all factory wiring, piping, control circuit board, fan and fan motor. The unit shall
have a self-diagnostic function, 3-minute time delay mechanism, and an auto restart function.
Indoor unit shall be charged with dry air before shipment from factory.
B. Unit Cabinet:
1. The casing shall have a white finish – Munsell 1.0Y 9.2/0.2.
2. Multi directional drain connection and refrigerant piping, offering three (3) direction
pipe alignments for all refrigerant piping and two (2) direction pipe alignments for
condensate draining shall be standard.
3. There shall be a separate, metal back-plate that secures the indoor unit firmly to the wall.
The back plate shall be securely attached to the wall.
C. Fan:
1. The indoor unit fan shall be an assembly with a line-flow fan direct driven by a single
motor.
2. The fan shall be statically and dynamically balanced and be powered by a motor with
permanently lubricated bearing.
3. A manual adjustable guide vane shall be provided with the ability to change the
airflow from side to side (left to right).
4. An integral, motorized, multi-position, horizontal air sweep flow louver shall provide
for uniform air distribution, up and down.
5. The indoor fan shall operate at of three (3) selectable speeds: High, Medium and Low.
D. Filter:
1. Return air shall be filtered by means of easily removed, Blue-Enzyme Filter with
permanently charged surface and a Platinum Catalyst Deodorizing Filter with
ceramic surface and pore sizes ranging from 1 to 10 nanometers.
Page 17 of 82
Mr. Slim MSZ-FD Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
E. Coil:
1. The indoor unit coil shall be of nonferrous construction with smooth plate fins on
copper tubing.
2. The tubing shall have inner groves for high efficiency heat exchange.
3. All tube joints shall be brazed with phoscopper or silver alloy.
4. The coils shall be pressure tested at the factory.
5. A sloped, corrosion resistant condensate pan with drain shall be provided under the
coil.
F. Electrical:
1. The indoor unit electrical power shall be 208-230 volts, 1-phase, 60 hertz.
2. The system shall be equipped with A-Control – a system directing that the indoor unit
be powered directly from the outdoor unit using a 3-wire, 14 ga. AWG connection
plus ground.
3. The indoor unit shall not have any supplemental electrical heat elements.
4. The outdoor unit shall be equipped with Pulse Amplitude Modulation (PAM)
compressor motor control for maximum efficiency.
4.02: Control
A. General:
1. The unit shall have a wireless controller to perform input functions necessary to
operate the system.
2. The wireless controller shall have a Power On/Off switch, Mode Selector – Cool, Dry,
Heat, Auto Modes - Temperature Setting, Timer Control, Fan Speed Select and Auto
Vane selector.
3. The indoor unit shall perform Self-diagnostic Function and Check Mode switching.
4. Temperature changes shall be by 1ºF increments with a range of 59 - 89ºF.
5. The microprocessor located in the indoor unit shall have the capability of sensing
return air temperature and indoor coil temperature, receiving and processing
commands from the wireless or a wired controller, providing emergency operation
and controlling the outdoor unit.
6. Indoor units shall be equipped with “i-see® Sensor” technology as a standard feature,
providing uniform temperature detection and response to equalize temperature from
floor to ceiling.
7. The system shall be capable of automatically restarting and operating at the
previously selected conditions when the power is restored after power interruption.
8. Control system shall control the continued operation of the air sweep louvers, as well
as provide On/Off, System/Mode function.
9. The indoor unit shall have the option of a field installed, multi-function, hard-wired,
wall mounted remote controller. Controller shall be a PAR-21MAA Deluxe MA type
remote controller
9.1. Hard-wired, wall mounted remote controller shall require a
MAC-397IF-E MA Series Terminal Interface for communications.
Interface will be mounted at the indoor unit.
Page 18 of 82
Mr. Slim MSZ-FD Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
4.03: Outdoor Units
General:
The MUZ-FD Series outdoor units are specifically designed to work with the MSZ-FD
indoor units. The outdoor units must have a thermally fused powder coated finish. The
outdoor unit shall be completely factory assembled, piped and wired. Each unit shall be
run tested at the factory.
A. Unit Cabinet:
1. The casing shall be fabricated of galvanized steel, bonderized, finished with an
electrostatically applied, thermally fused acrylic or polyester powder coating for corrosion
protection. Cabinet color shall be Munsell 3Y 7.8/1.1.
B. Fan:
1. The unit shall be furnished with a direct drive propeller type fan.
2. The outdoor unit fan motor shall be a direct current (DC) motor and have
permanently lubricated bearings.
3. The fan motor shall be mounted for quiet operation.
4. The fan shall be provided with a raised guard to prevent contact with moving parts.
5. The outdoor unit shall have horizontal discharge airflow.
C. Coil:
1. The outdoor unit coil shall be of nonferrous construction with lanced or corrugated
plate fins on copper tubing.
2. The coil shall be protected with an integral metal guard.
3. Refrigerant flow from the outdoor unit shall be regulated by means of an
electronically controlled, precision, linear expansion valve.
4. Outdoor unit shall be pre-charged with sufficient R-410a refrigerant for up to
twenty five (25) feet of refrigerant piping.
D. Compressor:
1. The compressor shall be of a high performance, hermetic; inverter driven, variable
speed, rotary type.
2. The compressor motor shall be direct current (DC) type.
3. The outdoor unit shall be equipped with an accumulator.
4. The compressor will be equipped with internal thermal overload protection.
5. The outdoor unit must have the ability to operate over the full capacity range with a
maximum height difference of 40 feet and have refrigerant tubing length of up to 65
feet between the indoor and outdoor units.
6. There shall be no need for line size changes, traps shall not be used, and no
additional refrigerant oil shall be required.
7. The compressor shall be mounted so as to avoid the transmission of vibration.
E. Electrical:
1. The outdoor unit electrical power supply shall be 208/230 volts, 1-phase, 60 hertz.
2. The unit shall be capable of satisfactory operation within voltage limits of 198 volts
to 253 volts.
3. The outdoor unit shall be controlled by microprocessors located in the indoor
unit and outdoor unit.
Page 19 of 82
Mr. Slim MSZ-FD Series Guide Specification, Rev 5/08 ©2008 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits MXZ
Section 238126.10 – Split Ductless Systems
Capacity Range: 1.6 to 3.0 Ton Nominal
Mitsubishi Model Number: MXZ-A (wall-mount) multi split inverter heat pump series.
Variable capacity multi-zone System:
MXZ2A20NA
One or two zones
MXZ3A30NA
Two or three zones
MXZ4A36NA
Three or four zones
Part 1 – General
1.01 System Description:
A.
The heat pump air conditioning system shall be a Mitsubishi Electric MXZ-A variable
capacity multi-zone series. The system shall consist of two (2), three (3), or four (4)
slim silhouette, compact, wall mounted indoor fan coil sections with digital wireless
remote controller and/or low-profile ducted indoor units with a wire remote controller
connected to a compact horizontal discharge outdoor unit which shall be of an inverter
driven heat pump design.
B.
Indoor unit model numbers shall be MSZA09NA, MSZA12NA, MSZA15NA,
MSZA17NA, MSZA24NA, MSZ-FD09NA, MSZ-FD12NA, SEZ-KD09NA,
SEZ-KD12NA, SEZ-KD15NA, and SEZ-KD18NA. Outdoor unit model numbers may
be MXZ2A20NA (1:1 or 2:1), MXZ3A30NA (2:1 or 3:1), and MXZ4A36NA (3:1 or
4:1) multi-zone systems.
1.02 Quality Assurance:
A. The system components shall be tested by a Nationally Recognized Testing Laboratory
(NRTL) and shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning Refrigeration Institute’s
(ARI) Standard 210 / 240 and bear the ARI Certification label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001, which
is a set of standards applying to product and manufacturing quality and environmental
management and protection set by the International Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. System efficiency shall meet or exceed 13 SEER when part of a multi system (2:1 / 3:1 /
4:1)
.
1.03 Delivery, Storage and Handling
A. Unit shall be stored inside and carefully handled according to the manufacturer’s
recommendations.
Page 20 of 82
Mr. Slim MXZ Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
B. The wireless remote controller shall be shipped inside the carton and packaged with the
indoor unit and shall be able to withstand 105°F storage temperatures and 95% relative
humidity without adverse effect.
Part 2 – Warranty
2.01 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year from
date of installation. The compressor shall have an extended warranty of 6 years from date of
installation. If, during this period, any part should fail to function properly due to defects in
workmanship or material, it shall be replaced or repaired at the discretion of the manufacturer.
This warranty will not include labor.
2.02 Manufacturer shall have over 29 years of continuous experience in the U.S. market.
Part 3 – Outdoor Unit Products
3.01 Outdoor Units:
General:
The MXZ-A outdoor units shall be specifically designed to work with the MSZ-A, MSZ-FD,
and SEZ-KD family of indoor units. The outdoor unit must have a fused powder coated finish
in a Munsell 5Y 8/1 color (MXZ-20A20NA) and Munsell 3Y 7.8/1.1. The outdoor unit shall be
completely factory assembled, piped and wired. Each unit shall be run tested at the factory
prior to shipment. The table below shows the available outdoor and indoor combinations:
MXZ Indoor Combinations based on rated cooling capacity
MXZ-2A20NA
MXZ-3A30NA
MXZ-4A36NA
9+9
9+9
9+9+9
9+12
9+12
9+9+12
9+15
9+15
9+9+15
12+12
9+17 or 18
9+9+17 or 18
9+24
9+9+24
12+12
9+12+12
12+15
9+12+15
12+17 or 18
9+12+17 or 18
15+15
9+15+15
15+17 or 18
9+15+17 or 18
17 or 18+17 or 18
9+17+17 or 18
9+9+9
12+12+12
9+9+12
12+12+15
9+9+15
12+12+17 or 18
9+9+17 or 18
12+15+17 or 18
9+9+9+9
9+9+9+12
9+9+9+15
9+9+12+12
A. Unit Cabinet:
Page 21 of 82
Mr. Slim MXZ Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
1. All casing and cabinet components shall be fabricated of galvanized steel, bonderized
finished with an electrostatically applied, thermally fused acrylic or polyester powder coating
for durable, corrosion resistant surface protection.
B. Fan:
1. The unit shall be furnished with a direct drive, high performance propeller type fan.
2. The condenser fan motor shall be a variable speed, direct current (DC) motor and
shall have permanently lubricated bearings.
3. Fan speed shall be switch automatically according to the number of operating
indoor units and the compressor operating frequency.
4. The fan motor shall be mounted with vibration isolation for quiet operation.
5. The fan shall be provided with a raised guard to prevent contact with moving parts.
6. The outdoor unit shall have horizontal discharge airflow.
C. Coil:
1. The outdoor unit coil shall be of nonferrous construction with lanced or corrugated
plate fins on copper tubing.
2. The coil shall be protected with an integral guard.
3. Refrigerant flow from the outdoor unit shall be independently controlled by means of
individual electronic linear expansion valves for each indoor unit.
D. Compressor:
1. The compressor motor shall be direct current (DC) type designed for variable speed
operation.
2. The compressor shall be a high performance, hermetic, inverter driven, variable
speed, rotary type.
3. The outdoor unit shall be equipped with a suction side refrigerant accumulator.
4. The compressor will be equipped with an internal thermal overload.
5. The compressor shall be mounted to avoid the transmission of vibration.
E. Manifold:
The outdoor unit shall have manifold connections providing a separate set of flared fittings
for each indoor unit per the table below:
Port
A
B
C
D
Connections
MXZ2A20NA
¼ “ Liquid :
¼ “ Liquid :
3/8” Gas
3/8” Gas
MXZ3A30NA
¼ “ Liquid :
¼ “ Liquid :
¼ “ Liquid :
1/2” Gas
3/8” Gas
3/8” Gas
MXZ4A36NA
¼ “ Liquid :
¼ “ Liquid :
¼ “ Liquid :
¼ “ Liquid :
1/2” Gas
3/8” Gas
3/8” Gas
3/8” Gas
[Some indoor unit combinations may require port adapters for proper connection]
F. Piping Requirements:
The outdoor unit must have the ability to operate within the following refrigerant piping and
height limitations without the need for line size changes, traps or additional oil.
Piping Lengths:
Refrigerant Piping Data
Length to each indoor unit
Total piping length
MXZ2A20NA
82 feet (Max)
164 feet (Max)
MXZ3A30NA
82 feet (Max)
230 feet (Max)
MXZ4A36NA
82 feet (Max)
230 feet (Max)
Page 22 of 82
Mr. Slim MXZ Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
Height Differential:
Model
MXZ2A20NA
MXZ3A30NA
MXZ4A36NA
Indoor unit above outdoor unit
49 feet (Max)
49 feet (Max)
49 feet (Max)
Indoor unit below outdoor unit
33 feet (Max)
33 feet (Max)
33 feet (Max)
G. Electrical:
1. The unit electrical power shall be 208/230 volts, 1-phase, 60 hertz.
2. The unit shall be capable of satisfactory operation within voltage limits of 198 volts
to 253 volts.
3. The outdoor unit shall be controlled by the microprocessors located in the indoor unit
and in the outdoor unit communicating system status, operation, and instructions digitally
over A-Control wiring.
4. The outdoor unit shall be equipped with Pulse Amplitude Modulation (PAM) compressor
inverter drive control for maximum efficiency with minimum power consumption.
Part 4 – Indoor Unit Products
4.01 Wall Mounted MSZ-A**NA Indoor Units:
A. General:
The indoor unit shall be fully factory assembled, wired and run tested prior to shipment.
Contained within the indoor unit shall be all factory wiring, piping, control circuit board, fan, and
fan motor. The unit shall have a self-diagnostic function, 3-minute restart time delay mechanism,
an auto restart function, an emergency / test operation. Indoor unit shall be charged with dry air
before shipment from factory.
B. Unit Cabinet:
1. The casing shall have a white finish– Munsell 1.0Y 9.2/0.2.
2. Multi directional drain and refrigerant piping, offering three (3) direction pipe alignment for
all refrigerant piping and two (2) direction pipe alignment for condensate draining shall be
standard.
3. There shall be a separate back plate that secures the indoor unit firmly to the wall.
C. Fan:
1. The indoor unit fan shall be an assembly with a line-flow fan direct driven by a single
motor.
2. The fan shall be statically and dynamically balanced and run on a motor with
permanently lubricated bearing.
3. A manual adjustable guide vane shall be provided with the ability to change the horizontal
airflow from side to side (left to right).
4. A integral, motorized, multi-position, vertical air sweep flow louver shall provide for
uniform air distribution. Louver position shall be selectable from the remote controller
Page 23 of 82
Mr. Slim MXZ Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
5. The indoor fan motor shall be capable of three (3) speed operation: High, Medium and
Low.
D. Filter:
1. Return air shall be filtered by means of an easily removed, washable, Catechin,
Antioxidant Pre-filter and a separate Anti-allergy blue enzyme filter – blue bellows type.
E. Coil:
1. The indoor unit coil shall be of nonferrous construction with smooth plate fins on copper
tubing.
2. The refrigerant tubing shall have inner groves for high efficiency heat exchange.
3. All tube joints shall be brazed with phoscopper or silver alloy.
4. The coils shall be pressure tested at the factory.
5. A condensate pan and drain shall be provided under the coil.
F. Electrical:
1. The indoor unit electrical power shall be 208 / 230 volts, 1-phase, 60 hertz.
2. The system shall be equipped with A-Control – a system allowing each indoor unit to be
powered and controlled directly from the outdoor unit using a 14 gauge (AWG) 3-wire
connection plus ground providing both primary power and integrated , by-directional,
digital control signal without additional connections.
3. The indoor units shall not have any supplemental or “back-up” electrical heating
elements.
G. Control:
1. The unit shall have a wireless controller to perform input functions necessary to operate
the system.
2. The wireless controller shall have a Power On/Off switch, Mode Selector – Cool, Dry,
Heat, Auto Modes - Temperature Setting, Timer Control, Fan Speed Select and Auto Vane
selector.
3. The indoor unit shall perform Self-diagnostic Function and Check Mode switching.
4. Temperature changes shall be by 1ºF increments with a range of 59 - 89ºF.
5. The microprocessor located in the indoor unit shall have the capability of sensing return
air temperature and indoor coil temperature, receiving and processing commands from the
wireless or a wired controller, providing emergency operation and controlling the outdoor
unit.
6. The system shall be capable of automatically restarting and operating at the previously
selected conditions when the power is restored after power interruption.
7. Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off, System/Mode function.
8. The indoor unit shall have the option of a field installed, multi-function, hard-wired, wall
mounted remote controller. Controller shall be a PAR-21MAA Deluxe MA type remote
controller
9.1. Hard-wired, wall mounted remote controller shall require a MAC-397IF-E
MA Series Terminal Interface for communications. Interface will be mounted
at the indoor unit.
4.02 Wall Mounted MSZ-FD**NA Indoor Units:
Page 24 of 82
Mr. Slim MXZ Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
A. General:
The indoor unit shall be factory assembled, wired and run tested. Contained within the unit
shall be all factory wiring, piping, control circuit board, fan and fan motor. The unit shall have a
self-diagnostic function, 3-minute time delay mechanism, and an auto restart function. Indoor unit
shall be charged with dry air before shipment from factory.
B. Unit Cabinet:
1. The casing shall have a white finish – Munsell 1.0Y 9.2/0.2.
2. Multi directional drain connection and refrigerant piping, offering three (3) direction pipe
alignments for all refrigerant piping and two (2) direction pipe alignments for condensate
draining shall be standard.
3. There shall be a separate, metal back-plate that secures the indoor unit firmly to the wall.
The back plate shall be securely attached to the wall.
C. Fan:
1. The indoor unit fan shall be an assembly with a line-flow fan direct driven by a single
motor.
2. The fan shall be statically and dynamically balanced and be powered by a motor with
permanently lubricated bearing.
3. A manual adjustable guide vane shall be provided with the ability to change the airflow
from side to side (left to right).
4. An integral, motorized, multi-position, horizontal air sweep flow louver shall provide for
uniform air distribution, up and down.
5. The indoor fan shall operate at of three (3) selectable speeds: High, Medium and Low.
D. Filter:
1. Return air shall be filtered by means of easily removed, Hybrid Catechin pre filter,
Blue-Enzyme Filter with permanently charged surface and a Platinum Catalyst
Deodorizing Filter with ceramic surface and pore sizes ranging from 1 to 10 nanometers.
E. Coil:
1. The indoor unit coil shall be of nonferrous construction with smooth plate fins on copper
tubing.
2. The tubing shall have inner groves for high efficiency heat exchange.
3. All tube joints shall be brazed with phoscopper or silver alloy.
4. The coils shall be pressure tested at the factory.
5. A sloped, corrosion resistant condensate pan with drain shall be provided under the coil.
F. Electrical:
1. The indoor unit electrical power shall be 208-230 volts, 1-phase, 60 hertz.
2. The system shall be equipped with A-Control – a system directing that the indoor unit be
powered directly from the outdoor unit using a 3-wire, 14 ga. AWG connection plus
ground.
3. The indoor unit shall not have any supplemental electrical heat elements.
4. The outdoor unit shall be equipped with Pulse Amplitude Modulation (PAM) compressor
motor control for maximum efficiency.
G. Control:
1. The unit shall have a wireless controller to perform input functions necessary to operate
the system.
Page 25 of 82
Mr. Slim MXZ Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
2. The wireless controller shall have a Power On/Off switch, Mode Selector – Cool, Dry,
Heat, Auto Modes - Temperature Setting, Timer Control, Fan Speed Select and Auto Vane
selector.
3. The indoor unit shall perform Self-diagnostic Function and Check Mode switching.
4. Temperature changes shall be by 1ºF increments with a range of 59 - 89ºF.
5. The microprocessor located in the indoor unit shall have the capability of sensing return
air temperature and indoor coil temperature, receiving and processing commands from the
wireless or a wired controller, providing emergency operation and controlling the outdoor
unit.
6. Indoor units shall be equipped with “i-see® Sensor” technology as a standard feature,
providing uniform temperature detection and response to equalize temperature from floor
to ceiling.
7. The system shall be capable of automatically restarting and operating at the previously
selected conditions when the power is restored after power interruption.
8. Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off, System/Mode function.
9. The indoor unit shall have the option of a field installed, multi-function, hard-wired, wall
mounted remote controller. Controller shall be a PAR-21MAA Deluxe MA type remote
controller
9.1. Hard-wired, wall mounted remote controller shall require a MAC-397IF-E
MA Series Terminal Interface for communications. Interface will be mounted
at the indoor unit.
4.03
SEZ-KD**NA Ducted Indoor Units
A. General:
The indoor unit shall be factory assembled, wired and run tested. Contained within the unit
shall be all factory wiring, piping, control circuit board, fan and fan motor. The unit shall have
a self-diagnostic function, 3-minute time delay mechanism, and an auto restart function.
Indoor unit shall be charged with dry air before shipment from factory.
B. Unit Cabinet:
1. The cabinet shall be low profile, ceiling-concealed ducted not to exceed 7-7/8” in
depth.
C. Fan:
1. The indoor unit fan shall be an assembly with one Sirocco fan direct driven by a single
motor.
2. The indoor fan shall be statically and dynamically balanced to run on a motor with
permanently lubricated bearings.
3. The indoor fan shall consist of three (3) speeds, High, Mid, and Low.
4. The indoor unit shall have a ducted air outlet system and ducted return air system.
D. Filter:
1. Return air shall be filtered by means of a standard factory installed return air filter.
E.
Coil:
1. The indoor coil shall be of nonferrous construction with smooth plate fins on copper
tubing.
2. The tubing shall have inner grooves for high efficiency heat exchange.
3. All tube joints shall be brazed with phos-copper or silver alloy.
4. The coils shall be pressure tested at the factory.
5. A condensate pan and drain shall be provided under the coil.
Page 26 of 82
Mr. Slim MXZ Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
F.
G.
1.
2.
3.
4.
5.
7.
6. The unit shall be provided with an integral condensate lift mechanism able to raise
drain water 21 inches above the condensate pan.
7. Both refrigerant lines to the indoor units shall be insulated.
Electrical:
1. The unit electrical power shall be 208/230 volts, 1 phase, 60 hertz.
2. The system shall be capable of satisfactory operation within voltage limits of 187-228
volts (208V/60Hz) or 207-253 volts (230V/60Hz).
Controls:
The unit shall have a multi-function, hard-wired, wall mounted remote controller to
perform input functions necessary to operate the system. Controller shall be a
PAR-21MAA Deluxe MA type remote controller.
The controller shall have a Power On/Off switch, Mode Selector – Cool, Dry, Heat, Auto
Modes - Temperature Setting, Timer Control, Fan Speed Select and Auto Fan Mode.
The indoor unit shall perform Self-diagnostic Function and Check Mode switching.
Temperature changes shall be by 1ºF increments with a range of 59 - 89ºF.
The microprocessor located in the indoor unit shall have the capability of sensing return
air temperature and indoor coil temperature, receiving and processing commands from the
wireless or a wired controller, providing emergency operation and controlling the outdoor
unit.
The system shall be capable of automatically restarting and operating at the previously
selected conditions when the power is restored after power interruption.
Page 27 of 82
Mr. Slim MXZ Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits
Section 15700 – Mechanical HVAC
Capacity Range: 2 to 3.5 Tons Nominal
Mitsubishi Model Number: PKA (wall mounted) Air Conditioner series – Wired
wall mounted controller
Part 1 – General
1.1 System Description
The Heat Pump system shall be a Mitsubishi Electric split system with Variable Speed
Inverter Compressor technology. The system shall consist of a wall mounted indoor section
with wired, wall mounted controller and a horizontal discharge, single phase outdoor unit.
1.2 With wired wall mounted controller
System Model Numbers
Indoor Units Outdoor Units
PKA-A12GA PUY-A12NHA
PKA-A18GA PUY-A18NHA
PKA-A24FA PUY-A24NHA
PKA-A30FA PUY-A30NHA
PKA-A36FA PUY-A36NHA
1.3 Quality Assurance
A. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)
and shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning Refrigeration
Institute’s (ARI) Standard 210 and bear the ARI Certification label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. The outdoor unit shall be pre-charged with R-410a refrigerant for 70 feet of
refrigerant tubing.
G. System efficiency shall meet or exceed 13.0 SEER.
1.4 Delivery, Storage and Handling
A. Unit shall be stored and handled according to the manufacturer’s recommendations.
B. The wireless controller shall be shipped inside the carton with the indoor unit and
able to withstand 105°F storage temperatures and 95% relative humidity without
adverse effect.
Page 28 of 82
Mr. Slim PKA-AC Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
Part 2 – Warranty
2.03 The units shall have a manufacturer’s parts and defects warranty for a period one (1)
year from date of installation. The compressor shall have a warranty of 6 years from
date of installation. If, during this period, any part should fail to function properly due to
defects in workmanship or material, it shall be replaced or repaired at the discretion of
the manufacturer. This warranty does not include labor.
2.04 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 Performance
Each system shall perform in accordance to the ratings shown in the table below. Cooling
performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the indoor
unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit.
System Model
Number
PKA-18GA
PKA-A24FA
PKA-A30FA
PKA-A36FA
Cooling
Capacity
Btu/h
8,000 –
18,000
12,000 –
24,000
12,000 –
30,000
12,000 –
34,200
TPW
SEER
Cooling
CFM
(Hi/Dry)
2.240
14.1
425
2,650
13.5
705
4,400
13.0
705
5,030
13.1
990
TPW = Total Power Watts
Part 4 - Design
4.01 Unit Cabinet
The indoor unit cabinet shall be wall mounted by means of a factory supplied mounting plate,
The cabinet shall be formed from high strength molded plastic with front panel access for
filter. Cabinet color shall be white – 12,000 and 18,000 Munsell 0.70 8.59/097, 24,000,
30,000, and 36,000 Munsell 3.4Y 7.7/08.
The indoor unit shall be factory assembled, wired and tested. Contained within the unit shall
be all factory wiring and internal piping, control circuit board and fan motor.
The unit in conjunction with the wired, wall mounted controller shall have a self-diagnostic
function, 3-minute time delay mechanism, an auto restart function, and a test run switch.
Indoor unit and refrigerant pipes shall be purged with dry nitrogen before shipment from the
factory.
4.02Fan
The evaporator fan shall be high performance, double inlet, forward curve, direct drive
sirocco fan with a single motor – One for 12,000 and 18,000 and 2 for 24,000, 30,000, and
36,000 The fans shall be statically and dynamically balanced and run on a motor with
permanently lubricated bearings. The indoor fan shall have four (4) speeds for 12,000 and
Page 29 of 82
Mr. Slim PKA-AC Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
18000: Low, M1, M2, and High and two (2) speeds for 24,000, 30,000, and 36,000: Low,
High.
4.03 Vane
There shall be a motorized horizontal vane to automatically direct air flow in a horizontal and
downward direction for uniform air distribution. The horizontal vane shall significantly
decrease downward air resistance for lower noise levels, and shall close the outlet port when
operation is stopped. There shall also be a set of vertical vanes to provide horizontal swing
airflow movement selected by remote control.
4.04 Filter
Return air shall be filtered by means of an easily removable washable filter.
4.05 Coil
The evaporator coil shall be of nonferrous construction with pre-coated aluminum strake fins
on copper tubing. The multi-angled heat exchanger shall have a modified fin shape that
reduces air resistance for a smoother, quieter airflow. All tube joints shall be brazed with
PhosCopper or silver alloy. The coils shall be pressure tested at the factory. A condensate pan
and drain shall be provided under the coil.
4.6 Electrical
The electrical power of the unit shall be 208 volts or 230 volts, 1 phase, 60 hertz. The system
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
power to the indoor unit shall be supplied from the outdoor unit, using the Mitsubishi Electric
A-Control system. For A-Control, a three (3) conductor AWG-14 wire with ground shall
provide power feed and bi-directional control transmission between the outdoor and indoor
units.
4.7 Control
4.07.1 The control system shall consist of two (2) microprocessors, one on each indoor and
outdoor unit. Field wiring shall run directly from the indoor unit interconnected by a
single non-polar two-wire AWG-16 stranded cable to the wall mounted controller
with no splices. The control system between the outdoor unit and indoor unit shall be
supplied from the outdoor unit using the Mitsubishi Electric A-Control system.
Reference 4.6 Electrical.
4.07.2 The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of
compressor run time. Diagnostics codes for indoor and outdoor units shall be
displayed on the wired controller panel.
4.07.3 The microprocessor located in the indoor unit shall have the capability of monitoring
return air temperature and indoor coil temperature, receiving and processing
commands from the wired controller, providing emergency operation and controlling
the outdoor unit.
Page 30 of 82
Mr. Slim PKA-AC Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
4.07.4 The indoor unit shall be connected to a wall mounted wired controller to perform input
functions necessary to operate the system. The wired controller shall have a large
multi-language DOT liquid crystal display (LCD) presenting contents in eight (8)
different languages, including English, French, Chinese, German, Japanese, Spanish,
Russian, and Italian. There shall be a built-in weekly timer with up to eight pattern
settings per day. The controller shall consist of an On/Off button, Increase/Decrease
Set Temperature buttons, a Cool/Dry/Fan mode selector, a Timer Menu button, a
Timer On/Off button, Set Time buttons, a Fan Speed selector, a Vane Position selector,
a Louver Swing button, a Ventilation button, a Test Run button, and a Check Mode
button. The controller shall have a built-in temperature sensor. Temperature shall be
displayed in either Fahrenheit (°F) or Celsius (°C). Temperature changes shall be by
increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to 30°C).
4.07.5 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor),
compressor operating conditions (including running current, frequency, input voltage,
On/Off status and operating time), LEV opening pulses, sub cooling and discharge
super heat.
4.07.6 Normal operation of the wired controller shall provide individual system control in
which one wired controller and one indoor unit are installed in the same room. The
controller shall have the capability of controlling up to a maximum of sixteen systems
at a maximum developed control cable distance of 1,500 feet (500 meters).
4.07.7 The control voltage from the wired controller to the indoor unit shall be 12 volts, DC.
The control signal between the indoor and outdoor unit shall be pulse signal 24 volts
DC. Up to two wired controllers shall be able to be used to control one unit.
4.07.8 Control system shall control the continued operation of the air sweep louvers, as well
as provide On/Off and mode switching. The controller shall have the capability to
provide sequential starting with up to fifty seconds delay.
Part 5 - Outdoor Unit
5.01 The outdoor unit shall be compatible with the three different types of indoor units (PKA
- wall mounted, PCA - ceiling suspending, and PLA - four way ceiling cassette). The
connected indoor unit must be of the same capacity as the outdoor unit. Models
PUY-A24NHA and PUY-A36NHA shall have the option to connect to two indoor units,
within the same confined space, to improve air distribution (total capacity shall be
equivalent to outdoor unit). The outdoor unit shall be equipped with a control board that
interfaces with the indoor unit to perform all necessary operation functions.
5.02 The outdoor unit shall be capable of operating at 0°F (-18°C) ambient temperature
without additional low ambient controls (optional wind baffle may be required).
5.03 The outdoor unit shall be able to operate with a maximum height difference of 100 feet
(30 meters) indoor unit to outdoor unit,
Page 31 of 82
Mr. Slim PKA-AC Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
5.04 System shall have a maximum refrigerant tubing length of 100 feet (30 meters) for the
12,000 and 18,000 and 165 feet (50 meters) for the 24,000, 30,000 and 36,000 between
indoor and outdoor units without the need for line size changes, traps or additional oil.
5.05 Models PUY-A12NHA, PUY-A18NHA, PUY-A24NHA, PUY-A30NHA and
PUY-A36NHA shall be pre-charged for a maximum of 70 feet (20 meters) of refrigerant
tubing. The outdoor unit shall be completely factory assembled, piped, and wired. Each
unit must be test run at the factory.
5.2 Cabinet
The casing shall be constructed from galvanized steel plate, coated with a finished with
an electrostatically applied, thermally fused acrylic or polyester powder coating for
corrosion protection and have a munsell 3Y 7.8/1.1 finish. The fan grille shall be of
ABS plastic.
.
5.3 Fan
Models PUY-A12NHA, PUY-A18NHA, PUY-A24NHA, PUY-A30NHA, and
PUY-A36NHA shall be furnished with an AC fan motor. The fan motor shall be of
aerodynamic design for quiet operation, and the fan motor bearings shall be permanently
lubricated. The outdoor unit shall have horizontal discharge airflow. The fan shall be
mounted in front of the coil, pulling air across it from the rear and dispelling it through the
front. The fan shall be provided with a raised guard to prevent contact with moving parts.
5.4 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce
debris build up. The coil shall be protected with an integral metal guard. Refrigerant flow
from the condenser shall be controlled by means of linear expansion valve (LEV) metering
orifice. The LEV shall be control by a microprocessor controlled step motor.
5.5 Compressor
The compressor for models PUY-A12NHA, PUY-A18NHA, PUY-A24NHA,
PUY-A30NHA and PUY-A36NHA shall be a DC rotary compressor with Variable
Compressor Speed Inverter Technology. The compressor shall be driven by inverter circuit to
control compressor speed. The compressor speed shall dynamically vary to match the room
load for significantly increasing the efficiency of the system which results in vast energy
savings. To prevent liquid from accumulating in the compressor during the off cycle, a
minimal amount of current shall be intermittently applied to the compressor motor to maintain
enough heat. The outdoor unit shall have an accumulator and high pressure safety switch.
The compressor shall be mounted to avoid the transmission of vibration.
5.6 Electrical
The electrical power of the unit shall be 208volts or 230 volts, 1 phase, 60 hertz. The unit
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
outdoor unit shall be controlled by the microprocessor located in the indoor unit.
Page 32 of 82
Mr. Slim PKA-AC Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
The control signal between the indoor unit and the outdoor unit shall be pulse signal 24 volts
DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input power
supply.
Page 33 of 82
Mr. Slim PKA-AC Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits
Section 15700 – Mechanical HVAC
Capacity Range: 2 to 3.5 Tons Nominal
Mitsubishi Model Number: PKA (wall mounted) Heat Pump series – Wired wall
mounted controller
Part 1 – General
1.1 System Description
The Heat Pump system shall be a Mitsubishi Electric split system with Variable Speed
Inverter Compressor technology. The system shall consist of a wall mounted indoor section
with wired, wall mounted controller and a horizontal discharge, single phase outdoor unit.
1.2 With wired wall mounted controller
System Model Numbers
Indoor Units Outdoor Units
PKA-A18GA PUZ-A18NHA
PKA-A24FA
PUZ-A24NHA
PKA-A30FA
PUZ-A30NHA
PKA-A36FA
PUZ-A36NHA
Quality Assurance
A. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)
and shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning Refrigeration
Institute’s (ARI) Standard 210 and bear the ARI Certification label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. The outdoor unit shall be pre-charged with R-410a refrigerant for 70 feet of
refrigerant tubing.
G. System efficiency shall meet or exceed 13.0 SEER.
1.01 Delivery, Storage and Handling
A. Unit shall be stored and handled according to the manufacturer’s recommendations.
B. The wireless controller shall be shipped inside the carton with the indoor unit and
able to withstand 105°F storage temperatures and 95% relative humidity without
adverse effect.
Page 34 of 82
Mr. Slim PKA-HP Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
Part 2 – Warranty
2.01 The units shall have a manufacturer’s parts and defects warranty for a period one (1)
year from date of installation. The compressor shall have a warranty of 6 years from
date of installation. If, during this period, any part should fail to function properly due to
defects in workmanship or material, it shall be replaced or repaired at the discretion of
the manufacturer. This warranty does not include labor.
2.02 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 Performance
Each system shall perform in accordance to the ratings shown in the table below. Cooling
performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the indoor
unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit. Heating
performance shall be based on 70°F DB, 60°F WB (21.1°C DB, 15.6°C WB) for the indoor
unit and 47°F DB, 15°F WB (8.3°C DB, 6.1°C WB) for the outdoor unit.
System Model
Number
PKA-18GA
PKA-A24FA
PKA-A30FA
PKA-A36FA
Cooling
Capacity
Btu/h
8,000 –
18,000
12,000 –
24,000
12,000 –
30,000
12,000 –
34,200
Heating
TPW
TPW
Capacity
SEER
Cooling Heating
Btu/h
8,000 –
2.240
2,130
14.1
19,000
12,000 –
2,650
2,570
13.5
26,000
12,000 –
4,400
3,660
13.0
32,000
12,000 –
5,030
3,610
13.1
37,000
HSPF
IV (V)
9.5
(7.3)
8.5
(6.8)
8.5
(6.8)
8.3
(6.7)
CFM
(Hi/Dry)
425
705
705
990
TPW = Total Power Watts
Part 4 - Design
4.01
Unit Cabinet
The indoor unit cabinet shall be wall mounted by means of a factory supplied mounting plate,
The cabinet shall be formed from high strength molded plastic with front panel access for
filter. Cabinet color shall be white – 18,000 Munsell 0.70 8.59/097 and 24,000, 30,000, and
36,000 Munsell 3.4Y 7.7/08.
The indoor unit shall be factory assembled, wired and tested. Contained within the unit shall
be all factory wiring and internal piping, control circuit board and fan motor.
The unit in conjunction with the wired, wall mounted controller shall have a self-diagnostic
function, 3-minute time delay mechanism, an auto restart function, and a test run switch.
Indoor unit and refrigerant pipes shall be purged with dry nitrogen before shipment from the
factory.
4.02 Fan
The evaporator fan shall be high performance, double inlet, forward curve, direct drive
sirocco fan with a single motor – One for 18,000 and 2 for 24,000, 30,000, and 36,000 The
fans shall be statically and dynamically balanced and run on a motor with permanently
lubricated bearings. The indoor fan shall consist of four (4) speeds: Low, M1, M2, and Hi for
the 18,000 and two (2) speeds: Low, High for the 24,000, 30,000, and 36,000 models.
Page 35 of 82
Mr. Slim PKA-HP Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
4.03
Vane
There shall be a motorized horizontal vane to automatically direct air flow in a horizontal and
downward direction for uniform air distribution. The horizontal vane shall significantly
decrease downward air resistance for lower noise levels, and shall close the outlet port when
operation is stopped. There shall also be a set of vertical vanes to provide horizontal swing
airflow movement selected by remote control.
4.04
Filter
Return air shall be filtered by means of an easily removable washable filter.
4.05 Coil
The evaporator coil shall be of nonferrous construction with pre-coated aluminum strake fins
on copper tubing. The multi-angled heat exchanger shall have a modified fin shape that
reduces air resistance for a smoother, quieter airflow. All tube joints shall be brazed with
PhosCopper or silver alloy. The coils shall be pressure tested at the factory. A condensate pan
and drain shall be provided under the coil.
4.06 Electrical
The electrical power of the unit shall be 208 volts or 230 volts, 1 phase, 60 hertz. The system
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
power to the indoor unit shall be supplied from the outdoor unit, using the Mitsubishi Electric
A-Control system. For A-Control, a three (3) conductor AWG-14 wire with ground shall
provide power feed and bi-directional control transmission between the outdoor and indoor
units.
4.07 Control
4.07.1 The control system shall consist of two (2) microprocessors, one on each indoor and
outdoor unit. Field wiring shall run directly from the indoor unit interconnected by a
single non-polar two-wire AWG-16 stranded cable to the wall mounted controller
with no splices. The control system between the outdoor unit and indoor unit shall be
supplied from the outdoor unit using the Mitsubishi Electric A-Control system.
Reference 4.6 Electrical.
4.07.2
The system shall be capable of automatic restart when power is restored and after
power interruption. The system shall have self-diagnostics ability, including total
hours of compressor run time. Diagnostic codes for indoor and outdoor units shall be
displayed on the wired controller panel.
4.07.3 The microprocessor located in the indoor unit shall have the capability of monitoring
return air temperature and indoor coil temperature, receiving and processing
commands from the wired controller, providing emergency operation and controlling
the outdoor unit.
4.07.4 The indoor unit shall be connected to a wall mounted wired controller to perform input
functions necessary to operate the system. The wired controller shall have a large
multi-language DOT liquid crystal display (LCD) presenting contents in eight (8)
Page 36 of 82
Mr. Slim PKA-HP Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
different languages, including English, French, Chinese, German, Japanese, Spanish,
Russian, and Italian.
4.07.5 There shall be a built-in weekly timer with up to eight pattern settings per day. The
controller shall consist of an On/Off button, Increase/Decrease Set Temperature
buttons, a Heat/Auto/Cool/Dry/Fan mode selector, a Timer Menu button, a Timer
On/Off button, Set Time buttons, a Fan Speed selector, a Vane Position selector, a
Louver Swing button, a Ventilation button, a Test Run button, and a Check Mode
button. The controller shall have a built-in temperature sensor. Temperature shall be
displayed in either Fahrenheit (°F) or Celsius (°C). Temperature changes shall be by
increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to 30°C).
4.07.6 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor),
compressor operating conditions (including running current, frequency, input voltage,
On/Off status and operating time), LEV opening pulses, sub cooling and discharge
super heat.
4.07.7 Normal operation of the wired controller shall provide individual system control in
which one wired controller and one indoor unit are installed in the same room. The
controller shall have the capability of controlling up to a maximum of sixteen systems
at a maximum developed control cable distance of 1,500 feet (500 meters).
4.07.8 The control voltage from the wired controller to the indoor unit shall be 12 volts, DC.
The control signal between the indoor and outdoor unit shall be pulse signal 24 volts
DC. Up to two wired controllers shall be able to be used to control one unit.
4.07.9
Control system shall control the continued operation of the air sweep louvers, as
well as provide On/Off and mode switching. The controller shall have the capability
to provide sequential starting with up to fifty seconds delay.
Part 5 - Outdoor Unit
5.01 The outdoor unit shall be compatible with the three different types of indoor units (PKA
- wall mounted, PCA - ceiling suspending, and PLA - four way ceiling cassette). The
connected indoor unit must be of the same capacity as the outdoor unit.
5.02 Models PUZ-A24NHA and PUZ-A36NHA shall have the option to connect to two
indoor units, within the same confined space, to improve air distribution (total capacity
shall be equivalent to outdoor unit). The outdoor unit shall be equipped with a control
board that interfaces with the indoor unit to perform all necessary operation functions.
5.03 The outdoor unit shall be capable of operating at 0°F (-18°C) ambient temperature
without additional low ambient controls (optional wind baffle may be required).
5.04 The outdoor unit shall be able to operate with a maximum height difference of 100 feet
(30 meters) between indoor and outdoor units.
5.05 Units shall have a maximum refrigerant tubing length of 100 feet (30 meters) for the
18,000 and 165 feet (50 meters) for the 24,000, 30,000, and 36,000 units between indoor
and outdoor units without the need for line size changes, traps or additional oil.
5.06 Models PUZ-A18NHA PUZ-A24NHA, PUZ-A30NHA and PUZ-A36NHA shall be
pre-charged for a maximum of 70 feet (20 meters) of refrigerant tubing. The outdoor
Page 37 of 82
Mr. Slim PKA-HP Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
unit shall be completely factory assembled, piped, and wired. Each unit must be test run
at the factory.
5.2 Cabinet
The casing shall be constructed from galvanized steel plate, coated with a finished with
an electrostatically applied, thermally fused acrylic or polyester powder coating for
corrosion protection and have a munsell 3Y 7.8/1.1 finish. The fan grille shall be of
ABS plastic.
.
5.3 Fan
Models PUZ-A18NHA, PUZ-A24NHA, PUZ-A30NHA, and PUZ-A36NHA shall be
furnished with an AC fan motor. The fan motor shall be of aerodynamic design for quiet
operation, and the fan motor bearings shall be permanently lubricated. The outdoor unit shall
have horizontal discharge airflow. The fan shall be mounted in front of the coil, pulling air
across it from the rear and dispelling it through the front. The fan shall be provided with a
raised guard to prevent contact with moving parts.
5.4 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce
debris build up. The coil shall be protected with an integral metal guard. Refrigerant flow
from the condenser shall be controlled by means of linear expansion valve (LEV) metering
orifice. The LEV shall be control by a microprocessor controlled step motor.
5.5 Compressor
The compressor for models PUZ-A18NHA, PUZ-A24NHA, PUZ-A30NHA and
PUZ-A36NHA shall be a DC rotary compressor with Variable Compressor Speed Inverter
Technology. The compressor shall be driven by inverter circuit to control compressor speed.
The compressor speed shall dynamically vary to match the room load for significantly
increasing the efficiency of the system which results in vast energy savings. To prevent liquid
from accumulating in the compressor during the off cycle, a minimal amount of current shall
be intermittently applied to the compressor motor to maintain enough heat. The outdoor unit
shall have an accumulator and high pressure safety switch. The compressor shall be mounted
to avoid the transmission of vibration.
5.6 Electrical
The electrical power of the unit shall be 208volts or 230 volts, 1 phase, 60 hertz. The unit
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
outdoor unit shall be controlled by the microprocessor located in the indoor unit.
The control signal between the indoor unit and the outdoor unit shall be pulse signal 24 volts
DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input power
supply.
Page 38 of 82
Mr. Slim PKA-HP Series Guide Specification ©April 2009 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits
Section 15700 – Mechanical HVAC
Capacity Range: 1 to 3.5 Tons Nominal – Air Conditioner
Mitsubishi Model Number: PLA-A**BA (Ceiling Cassette) Air Conditioner series
– Wired wall mounted controller
Part 1 – General
1.1 System Description
The Air Conditioner system shall be a Mitsubishi Electric split system with Variable Speed
Inverter Compressor technology. The system shall consist of a ceiling cassette indoor section
that shall include a four (4) way grill with integral return and be equipped with a wired, wall
mounted, remote controller and a matched capacity, horizontal discharge, single phase
outdoor unit.
1.2 With wired wall mounted controller
System Model Numbers
Indoor Units Outdoor Units
PLA-A12BA PUY-A12NHA
PLA-A18BA PUY-A18NHA
PLA-A24BA PUY-A24NHA
PLA-A30BA PUY-A30NHA
PLA-A36BA PUY-A36NHA
PLA-A42BA PUY-A42NHA
1.3 Quality Assurance
H. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)
and shall bear the ETL label.
I. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
J. The units shall be rated in accordance with Air-Conditioning, Heating, and
Refrigeration Institute’s (AHRI) Standard 210 and bear the ARI Certification label.
K. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
L. A dry air holding charge shall be provided in the indoor section.
M. The outdoor unit shall be pre-charged with R-410a refrigerant for 70 feet (20
meters) of refrigerant tubing.- PUY42NHA for 100 feet (30 meters) of refrigerant
tubing
N. System efficiency shall meet or exceed 13.5 SEER.
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1.4 Delivery, Storage and Handling
C. Unit shall be stored and handled according to the manufacturer’s recommendations.
D. The wireless controller shall be shipped inside the carton with the indoor unit and able
to withstand 105°F storage temperatures and 95% relative humidity without adverse
effect.
Part 2 – Warranty
2.01 The units shall have a manufacturer’s parts and defects warranty for a period one (1)
year from date of installation. The compressor shall have a warranty of 6 years from
date of installation. If, during this period, any part should fail to function properly due to
defects in workmanship or material, it shall be replaced or repaired at the discretion of
the manufacturer. This warranty does not include labor.
2.02 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 Performance
Each system shall perform in accordance to the ratings shown in the table below. Cooling
performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the indoor
unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit.
System Model
Number
PLA-12BA
PLA-18BA
PLA-A24BA
PLA-A30BA
PLA-A36BA
PLA-A42BA
Cooling
Capacity
Btu/h
6,000 –
12,000
8,000 –
18,000
12,000 –
24,000
12,000 –
30,000
12,000 –
35,000
18,000 –
42,000
TPW
SEER
Cooling
CFM
(Hi/Dry)
1,260
13.5
530
1,940
14.2
640
2,500
13.6
640
4,100
13.6
740
4,500
14.2
1,060
4,600
14.4
1,090
TPW = Total Power Watts
Operating Range
Indoor Air Intake Temperature
Cooling
Maximum
D.B. 95°F (35°C) W.B. 71°F (21.7°C)
Minimum
D.B. 67°F (19.4°C) W.B. 57°F (13.9°C)
* Requires wind baffle – without wind baffle: D.B. 23°F (-5°C)
Outdoor Air Intake Temperature
D.B. 115°F (46°C)
D.B. 0°F (-18°C)*
Part 4 - Design
4.1 Indoor Unit
4.1.1 Cabinet
The indoor unit cabinet shall be a space-saving ceiling-recessed cassette type, The cabinet
shall be formed from galvanized sheet metal coated with high-density foam insulation.
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The indoor unit shall be factory assembled, wired and tested. Contained within the unit shall
be all factory wiring and internal piping, condensate lift mechanism, control circuit board, fan,
and fan motor. Single branch ducting shall be allowed from cabinet. The cabinet panel shall
have provisions for a field installed filtered outside air intake.
4.1.2 A separate grill assembly shall be attached to the front of the cabinet to provide supply
air vanes in four directions and a center mounted return air section. The four-way grill shall be
fixed to bottom of cabinet allowing two, three or four-way blow. The grill vane angles shall be
individually adjustable from the wired remote controller to customize the airflow pattern for
the conditioned space. Grill assembly color shall be Munsell 6.4Y 8.9/0.4
4.1.3 The unit, in conjunction with the wired, wall-mounted controller shall have a
self-diagnostic function, 3-minute time delay mechanism, and an auto restart function. Indoor
unit and integral refrigerant pipes shall be purged with dry nitrogen and caped before
shipment from the factory.
4.2 Fan
The indoor fan shall be an assembly with a turbo fan propeller, direct driven by a single
motor and shall be statically and dynamically balanced to run on a motor with
permanently lubricated bearings.
The indoor fan shall consist of five (5) speed settings, Low, Mid1, Mid2, High and Auto.
The fan shall have a selectable Auto fan setting that will adjust the fan speed based on the
difference between controller set-point and space temperature.
4.3 Vane
The indoor unit shall have an adjustable air outlet system offering 4-way airflow, 3-way
airflow, or 2-way airflow with switches that can be set to provide optimum airflow based
on ceiling height and number of outlets used.
The indoor unit vanes shall have 5 fixed positions and a swing feature that shall be capable
of automatically swinging the vanes up and down for uniform air distribution.
If specified, the grill shall have an optional i-see® sensor that will measure room
temperature variations and adjust the airflow accordingly to evenly condition the space.
4.4 Filter
Return air shall be filtered by means of an easily removable, long life, washable filter.
4.5 Coil
The indoor unit coil shall be of nonferrous construction with pre-coated aluminum strake fins
on copper tubing. The tubing shall have inner grooves for high efficiency heat exchange.
The heat exchanger shall have a modified fin shape that reduces air resistance for a smoother,
quieter airflow. All tube joints shall be brazed with PhosCopper or silver alloy. The coils
shall be pressure tested at the factory.
A condensate pan with drain connections shall be provided under the coil. The unit shall also
include a built-in, automatic condensate lift mechanism that will be able to raise drain water
33 inches (84 cm) above the condensate pan. The lift mechanism shall be equipped with a
positive acting liquid level sensor to shut down the indoor unit if liquid level in the drain pan
reached maximum level.
Both refrigerant lines between the indoor unit and outdoor unit shall be fully insulated.
4.6 Electrical
The electrical power of the unit shall be 208 / 230 volts, 1-phase, 60 hertz.
The system shall be capable of satisfactory operation within voltage limits of 198 volts to 253
volts.
The indoor unit shall be provided with A-Control – a system allowing the indoor unit to be
powered and controlled directly from the outdoor unit using a 14 gauge (AWG) 3-wire
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connection plus ground providing both primary power and integrated , by-directional, digital
control signal without additional connections.
The indoor units shall not have any supplemental or “back-up” electrical heating elements.
Part 5 Control
5.1 The control system shall consist of two (2) microprocessors, one in each indoor and
outdoor unit, interconnected by A-Control. This three (3) conductor 14 ga. AWG wire with
ground method shall provide power feed and bi-directional digital control transmission
between the outdoor and indoor units.
5.2 The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of
compressor run time. Diagnostics codes for indoor and outdoor units shall be displayed on the
wired controller display panel.
5.3 The microprocessor located in the indoor unit shall have the capability of monitoring
return air temperature and indoor coil temperature, receiving and processing commands from
the wired controller, providing emergency operation and for controlling the operation of the
outdoor unit.
5.4 The indoor unit shall be connected to a wall mounted wired controller to perform input
functions necessary to operate the system. The wired controller shall have a large
multi-language DOT liquid crystal display (LCD) presenting contents in eight (8) different
languages, including English, French, Chinese, German, Japanese, Spanish, Russian, and
Italian.
5.5 There shall be a built-in weekly timer with up to eight pattern settings per day. The
controller shall consist of an On/Off button, Increase/Decrease Set Temperature buttons, a
Cool / Dry / Fan mode selector, a Timer Menu button, a Timer On/Off button, Set Time
buttons, a Fan Speed selector, a Vane Position selector, a Louver Swing button, a Test Run
button, and a Check Mode button. The controller shall have a built-in temperature sensor.
Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C). Temperature
changes shall be by increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to 30°C).
5.6 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor), compressor
operating conditions (including running current, frequency, input voltage, On/Off status and
operating time), LEV opening pulses, sub cooling and discharge super heat.
5.7 Normal operation of the wired controller shall provide individual system control in which
one wired controller and one indoor unit are installed in the same room. Temperature sensing
shall be done by a Thermistor mounted in the return air stream of the indoor unit. An alternate
temperature sensor shall be located within the wall controller. Selection of the sensor is by
switch in the indoor unit.
The controller shall have the capability of controlling up to a maximum of sixteen systems at
a maximum developed control cable distance of 1,650 feet (500 meters).
5.8 The control voltage from the wired controller to the indoor unit shall be a digital +/-24
volts, DC signal. The control signal between the indoor and outdoor unit shall be pulse signal
24 volts DC. Up to two wired controllers shall be able to be used to control one unit.
5.9 Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off and mode switching. The controller shall have the capability to provide
sequential starting with up to fifty seconds delay.
5.10 A two wire (one pair) twisted, stranded, 18 gauge (AWG), jacketed, control cable shall
be used to connect the controller to the indoor unit.
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Part 6 - Outdoor Unit
6.01 The outdoor unit shall be compatible with the three different types of indoor units (PKA
- wall mounted, PCA - ceiling suspending, and PLA - four way ceiling cassette). The
connected indoor unit must be of the same capacity as the outdoor unit.
Option: Twinning is allowed as described in 6.02 below.
6.02 Models PUY-A24NHA and PUY-A36NHA shall have the option to connect to two
indoor units, within the same confined space, to improve air distribution (total capacity shall
be equivalent to outdoor unit). This is described as Twinning – a single wired wall mounted
remote controller must control both indoor units simultaneously.
6.03 The outdoor unit shall be equipped with a control board that interfaces with the indoor
unit to perform all necessary operation functions.
The outdoor unit shall be capable of operating at 0°F (-18°C) ambient temperature without
additional low ambient controls (optional wind baffle shall be required). The outdoor unit
shall be able to operate with a maximum height difference of 100 feet (30 meters) between
indoor and outdoor units.
6.04 System shall have a maximum refrigerant tubing length of 100 feet (30 meters) for the
12,000 and 18,000 and 165 feet (50 meters) for the 24,000, 30,000, 36,000, and 42,000 BTU/h
units between indoor and outdoor units without the need for line size changes, traps or
additional oil.
6.05 Models PUY-A12NHA PUY-A18NHA PUY-A24NHA, PUY-A30NHA and
PUY-A36NHA shall be pre-charged for a maximum of 70 feet (20 meters) of refrigerant
tubing. – the PUY-A42NHA shall be pre-charged for a maximum of 100 feet (30 meters) of
refrigerant tubing
6.06 The outdoor unit shall be completely factory assembled, piped, and wired. Each unit
must be test run at the factory.
6.1 Cabinet
The casing shall be constructed from galvanized steel plate, coated with a finished with an
electrostatically applied, thermally fused acrylic or polyester powder coating for corrosion
protection and have a munsell 3Y 7.8/1.1 finish. The fan grill shall be of ABS plastic.
.
6.2 Fan
A. Models PUY-A12NHA PUY-A18NHA, PUY-A24NHA, PUY-A30NHA, and
PUY-A36NHA shall be furnished with an AC fan motor. Model PUY-A42NHA shall have
two (2) DC fan motors
B. The fan motor shall be of aerodynamic design for quiet operation, and the fan
motor bearings shall be permanently lubricated. The outdoor unit shall have horizontal
discharge airflow. The fan shall be mounted in front of the coil, pulling air across it from the
rear and dispelling it through the front. The fan shall be provided with a raised guard to
prevent contact with moving parts.
6.3 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce
debris build up. The coil shall be protected with an integral metal guard. Refrigerant flow
from the condenser shall be controlled by means of linear expansion valve (LEV) metering
orifice. The LEV shall be control by a microprocessor controlled step motor.
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6.4 Compressor
A. The compressor for models PUY-A12NHA PUY-A18NHA, PUY-A24NHA,
PUY-A30NHA and PUY-A36NHA shall be a DC rotary compressor with Variable
Compressor Speed Inverter Technology.
B The compressor for model PUY-A42NHA shall be a frame compliant scroll
compressor with Variable Speed Inverter Technology
C. All compressors shall be driven by inverter circuit to control compressor speed.
The compressor speed shall dynamically vary to match the zone space load for significantly
increasing the efficiency of the system which results in vast energy savings. To prevent liquid
from accumulating in the compressor during the off cycle, a minimal amount of current shall
be intermittently applied to the compressor motor to maintain sufficient heat.
D. The outdoor unit shall have an accumulator and high pressure safety switch. The
compressor shall be mounted to avoid the transmission of vibration.
6.5 Electrical
A. The electrical power of the unit shall be 208volts or 230 volts, 1 phase, 60 hertz.
The unit shall be capable of satisfactory operation within voltage limits of 198 volts to 253
volts. The outdoor unit shall be controlled by the microprocessor located in the indoor unit.
B The control signal between the indoor unit and the outdoor unit shall be pulse signal
24 volts DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input
power supply.
Page 44 of 82
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HVAC Guide Specifications
Ductless Mini-splits
Section 15700 – Mechanical HVAC
Capacity Range: 1.5 to 3.5 Tons Nominal – Heat Pump
Mitsubishi Model Number: PLA-A**BA (Ceiling Cassette) Heat Pump series –
Wired wall mounted controller
Part 1 – General
1.1 System Description
The Heat Pump system shall be a Mitsubishi Electric split system with Variable Speed
Inverter Compressor technology. The system shall consist of a ceiling cassette indoor section
that shall include a four (4) way grill with integral return and be equipped with a wired, wall
mounted, remote controller and a matched capacity, horizontal discharge, single phase
outdoor unit.
1.2 With wired wall mounted controller
System Model Numbers
Indoor Units Outdoor Units
PLA-A18BA
PUZ-A18NHA
PLA-A24BA
PUZ-A24NHA
PLA-A30BA
PUZ-A30NHA
PLA-A36BA
PUZ-A36NHA
PLA-A42BA
PUZ-A42NHA
Quality Assurance
O. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)
and shall bear the ETL label.
P. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
Q. The units shall be rated in accordance with Air-conditioning, Heating, and
Refrigeration Institute’s (AHRI) Standard 240 and bear the ARI Certification label.
R. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
S. A dry air holding charge shall be provided in the indoor section.
T. The outdoor unit shall be pre-charged with R-410a refrigerant for 70 feet (20
meters) of refrigerant tubing.- PUZ42NHA for 100 feet (30 meters) of refrigerant
tubing
U. System efficiency shall meet or exceed 13.6 SEER.
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1.02 Delivery, Storage and Handling
E. Unit shall be stored and handled according to the manufacturer’s recommendations.
F. The wireless controller shall be shipped inside the carton with the indoor unit and
able to withstand 105°F storage temperatures and 95% relative humidity without
adverse effect.
Part 2 – Warranty
2.03 The units shall have a manufacturer’s parts and defects warranty for a period one (1)
year from date of installation. The compressor shall have a warranty of 6 years from
date of installation. If, during this period, any part should fail to function properly due to
defects in workmanship or material, it shall be replaced or repaired at the discretion of
the manufacturer. This warranty does not include labor.
2.04 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 Performance
Each system shall perform in accordance to the ratings shown in the table below. Cooling
performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the indoor
unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit. Heating
performance shall be based on 70°F DB, 60°F WB (21.1°C DB, 15.6°C WB) for the indoor
unit and 47°F DB, 15°F WB (8.3°C DB, 6.1°C WB) for the outdoor unit.
System Model
Number
PLA-18BA
PLA-A24BA
PLA-A30BA
PLA-A36BA
PLA-A42BA
Cooling
Capacity
Btu/h
8,000 –
18,000
12,000 –
24,000
12,000 –
30,000
12,000 –
35,000
18,000 –
42,000
Heating
TPW
TPW
Capacity
SEER
Cooling Heating
Btu/h
8,000 –
1,940
1,900
14.2
19,000
12,000 –
2,500
2,570
13.6
26,000
12,000 –
4,100
3,370
13.6
32,000
12,000 –
4,500
3,300
14.2
37,000
18,000 –
4,600
4,450
14.4
45,000
HSPF
CFM
(Hi/Dry)
9.8
640
8.5
640
8.7
740
9.3
1,060
9.3
1,090
TPW = Total Power Watts
Operating Range
Indoor Air Intake Temperature
Outdoor Air Intake Temperature
Cooling Maximum D.B. 95°F (35°C) W.B. 71°F (21.7°C)
D.B. 115°F (46°C)
Minimum D.B. 67°F (19.4°C) W.B. 57°F (13.9°C) D.B. 0°F (-18°C)*
Heating Maximum D.B. 80°F (26.7°C) W.B. 67°F (19.4°C) D.B. 70°F (21.1°C) W.B. 59°F (15°C)
Minimum D.B. 70°F (21.1°C) W.B. 60°F (15.6°C) D.B. 12°F (-11.1°C) W.B. 10°F (-12.2°C)
* Requires wind baffle – without wind baffle: D.B. 23°F (-5°C)
Page 46 of 82
PLA-**B HP Guide Spec © 2008 Mitsubishi Electric / HVAC
Part 4 - Design
4.1 Indoor Unit
4.1.1 Cabinet
A. The indoor unit cabinet shall be a space-saving ceiling-recessed cassette type. The
cabinet shall be formed from galvanized sheet metal coated with high-density foam
insulation.
B. The indoor unit shall be factory assembled, wired and tested. Contained within the
unit shall be all factory wiring and internal piping, drain left mechanism, control circuit board,
fan, and fan motor. Single branch ducting shall be allowed from cabinet. The cabinet panel
shall have provisions for a field installed filtered outside air intake.
C. A separate grill assembly shall be attached to the front of the cabinet to provide
supply air vanes in four directions and a center mounted return air section. The four-way grill
shall be fixed to bottom of cabinet allowing two, three or four-way blow. The grill vane angles
shall be individually adjustable from the wired remote controller to customize the airflow
pattern for the conditioned space. Grill assembly color shall be Munsell 6.4Y 8.9/0.4.
D. The unit, in conjunction with the wired, wall-mounted controller shall have a
self-diagnostic function, 3-minute time delay mechanism, and an auto restart function. Indoor
unit and integral refrigerant pipes shall be purged with dry nitrogen and caped before
shipment from the factory.
4.1.2 Fan
The indoor fan shall be an assembly with a turbo fan propeller, direct driven by a single
motor and shall be statically and dynamically balanced to run on a motor with
permanently lubricated bearings.
The indoor fan shall consist of five (5) speed settings, Low, Mid1, Mid2, High and Auto.
The fan shall have a selectable Auto fan setting that will adjust the fan speed based on the
difference between controller set-point and space temperature.
4.1.3 Vane
The indoor unit shall have an adjustable air outlet system offering 4-way airflow, 3-way
airflow, or 2-way airflow with switches that can be set to provide optimum airflow based
on ceiling height and number of outlets used.
The indoor unit vanes shall have 5 fixed positions and a swing feature that shall be capable
of automatically swinging the vanes up and down for uniform air distribution.
The vanes shall have an Auto-Wave selectable option in the heating mode that shall
randomly cycle the vanes up and down to evenly heat the space.
If specified, the grill shall have an optional i-see® sensor that will measure room
temperature variations and adjust the airflow accordingly to evenly condition the space.
4.1.4 Filter
Return air shall be filtered by means of an easily removable, long life, washable filter.
4.1.5 Coil
The indoor unit coil shall be of nonferrous construction with pre-coated aluminum strake fins
on copper tubing. The tubing shall have inner grooves for high efficiency heat exchange.
The heat exchanger shall have a modified fin shape that reduces air resistance for a smoother,
quieter airflow. All tube joints shall be brazed with PhosCopper or silver alloy. The coils
shall be pressure tested at the factory.
A condensate pan with drain connections shall be provided under the coil. The unit shall also
include a built-in, automatic condensate lift mechanism that will be able to raise drain water
33 inches (84 cm) above the condensate pan. The lift mechanism shall be equipped with a
Page 47 of 82
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positive acting liquid level sensor to shut down the indoor unit if liquid level in the drain pan
reached maximum level.
Both refrigerant lines between the indoor unit and outdoor unit shall be fully insulated.
4.1.6 Electrical
The electrical power of the unit shall be 208 / 230 volts, 1-phase, 60 hertz.
The system shall be capable of satisfactory operation within voltage limits of 198 volts to 253
volts.
The indoor unit shall be provided with A-Control – a system allowing the indoor unit to be
powered and controlled directly from the outdoor unit using a 14 gauge (AWG) 3-wire
connection plus ground providing both primary power and integrated , by-directional, digital
control signal without additional connections.
The indoor units shall not have any supplemental or “back-up” electrical heating elements.
Part 5 Control
5.1 The control system shall consist of two (2) microprocessors, one in each indoor and
outdoor unit, interconnected by A-Control. This three (3) conductor 14 ga. AWG wire with
ground method shall provide power feed and bi-directional digital control transmission
between the outdoor and indoor units.
5.2 The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of
compressor run time. Diagnostics codes for indoor and outdoor units shall be displayed on the
wired controller display panel.
5.3 The microprocessor located in the indoor unit shall have the capability of monitoring
return air temperature and indoor coil temperature, receiving and processing commands from
the wired controller, providing emergency operation and for controlling the operation of the
outdoor unit.
5.4 The indoor unit shall be connected to a wall mounted wired controller to perform input
functions necessary to operate the system. The wired controller shall have a large
multi-language DOT liquid crystal display (LCD) presenting contents in eight (8) different
languages, including English, French, Chinese, German, Japanese, Spanish, Russian, and
Italian.
5.5 There shall be a built-in weekly timer with up to eight pattern settings per day. The
controller shall consist of an On/Off button, Increase/Decrease Set Temperature buttons, a
Heat / Auto / Cool / Dry / Fan mode selector, a Timer Menu button, a Timer On/Off button,
Set Time buttons, a Fan Speed selector, a Vane Position selector, a Louver Swing button, a
Test Run button, and a Check Mode button. The controller shall have a built-in temperature
sensor. Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C).
Temperature changes shall be by increments of 1°F (1°C) with a range of 67°F to 87°F (19°C
to 30°C).
5.6 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor), compressor
operating conditions (including running current, frequency, input voltage, On/Off status and
operating time), LEV opening pulses, sub cooling and discharge super heat.
5.7 Normal operation of the wired controller shall provide individual system control in which
one wired controller and one indoor unit are installed in the same room. Temperature sensing
shall be done by a Thermistor mounted in the return air stream of the indoor unit. An alternate
Page 48 of 82
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temperature sensor shall be located within the wall controller. Selection of the sensor is by
switch in the indoor unit.
The controller shall have the capability of controlling up to a maximum of sixteen systems at
a maximum developed control cable distance of 1,650 feet (500 meters).
5.8 The control voltage from the wired controller to the indoor unit shall be a digital +/-24
volts, DC signal. The control signal between the indoor and outdoor unit shall be pulse signal
24 volts DC. Up to two wired controllers shall be able to be used to control one unit.
5.9 Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off and mode switching. The controller shall have the capability to provide
sequential starting with up to fifty seconds delay.
5.10 A two wire (one pair) twisted, stranded, 18 gauge (AWG), jacketed, control cable shall
be used to connect the controller to the indoor unit.
Part 6 - Outdoor Unit
6.01 The outdoor unit shall be compatible with the three different types of indoor units (PKA
- wall mounted, PCA - ceiling suspending, and PLA - four way ceiling cassette). The
connected indoor unit must be of the same capacity as the outdoor unit.
Option: Twinning is allowed as described in 6.02 below.
6.02 Models PUZ-A24NHA and PUZ-A36NHA shall have the option to connect to two
indoor units, within the same confined space, to improve air distribution (total capacity
shall be equivalent to outdoor unit).
6.03The outdoor unit shall be equipped with a control board that interfaces with the indoor
unit to perform all necessary operation functions.
6.04The outdoor unit shall be capable of operating at 0°F (-18°C) ambient temperature
without additional low ambient controls (optional wind baffle may be required).
6.05The outdoor unit shall be able to operate with a maximum height difference of 100 feet
(30 meters) between indoor and outdoor units.
6.06System shall have a maximum refrigerant tubing length of 100 feet (30 meters) for the
18,000 and 65 feet (50 meters) for the 24,000, 30,000, 36,000, and 42,000 BTU/h units
between indoor and outdoor units without the need for line size changes, traps or
additional oil. Models PUZ-A18NHA PUZ-A24NHA, PUZ-A30NHA and
PUZ-A36NHA shall be pre-charged for a maximum of 70 feet (20 meters) of refrigerant
tubing – PUZ-A42NHA for 100 feet (30 meters).
6.07The outdoor unit shall be completely factory assembled, piped, and wired. Each unit
must be test run at the factory.
6.2 Cabinet
The casing shall be constructed from galvanized steel plate, coated with a finished with
an electrostatically applied, thermally fused acrylic or polyester powder coating for
corrosion protection and have a munsell 3Y 7.8/1.1 finish. The fan grill shall be of ABS
plastic.
.
6.3 Fan
Models PUZ-A18NHA, PUZ-A24NHA, PUZ-A30NHA, and PUZ-A36NHA shall be
furnished with an AC fan motor. . Model PUY-A42NHA shall have two (2) DC fan motors. .
The fan motor shall be of aerodynamic design for quiet operation, and the fan motor bearings
shall be permanently lubricated. The outdoor unit shall have horizontal discharge airflow.
The fan shall be mounted in front of the coil, pulling air across it from the rear and dispelling
Page 49 of 82
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it through the front. The fan shall be provided with a raised guard to prevent contact with
moving parts.
6.4 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce
debris build up. The coil shall be protected with an integral metal guard. Refrigerant flow
from the condenser shall be controlled by means of linear expansion valve (LEV) metering
orifice. The LEV shall be control by a microprocessor controlled step motor.
6.5 Compressor
The compressor for models PUZ-A18NHA, PUZ-A24NHA, PUZ-A30NHA and
PUZ-A36NHA shall be a DC rotary compressor with Variable Compressor Speed Inverter
Technology. . The compressor for model PUY-A42NHA shall be a Frame Compliant Scroll
compressor with variable speed inverter drive technology. The compressor shall be driven by
inverter circuit to control compressor speed. The compressor speed shall dynamically vary to
match the room load for significantly increasing the efficiency of the system which results in
vast energy savings. To prevent liquid from accumulating in the compressor during the off
cycle, a minimal amount of current shall be intermittently applied to the compressor motor to
maintain sufficient heat. The outdoor unit shall have an accumulator and high pressure safety
switch. The compressor shall be mounted to avoid the transmission of vibration.
6.6 Electrical
The electrical power of the unit shall be 208volts or 230 volts, 1 phase, 60 hertz. The unit
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
outdoor unit shall be controlled by the microprocessor located in the indoor unit.
The control signal between the indoor unit and the outdoor unit shall be pulse signal 24 volts
DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input power
supply.
Page 50 of 82
PLA-**B HP Guide Spec © 2008 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits
Section 15700 – Mechanical HVAC
Capacity Range: 2 to 3.5 Tons Nominal
Mitsubishi Model Number: PCA (ceiling suspended) Cooling only series.
Part 1 – General
1.01 System Description
The air conditioning system shall be a Mitsubishi Electric split system with Variable Speed
Inverter Compressor technology. The system shall consist of a ceiling-suspended indoor
section with wired, wall mounted controller and a horizontal discharge, single phase outdoor
unit.
System Model Numbers
Indoor Units Outdoor Units
PCA-A24GA PUY-A24NHA
PCA-A30GA PUY-A30NHA
PCA-A36GA PUY-A36NHA
PCA-A42GA PUY-A42NHA
1.02 Quality Assurance
V. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)
and shall bear the ETL label.
W. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
X. The units shall be rated in accordance with Air-conditioning Refrigeration
Institute’s (ARI) Standard 240 and bear the ARI Certification label.
Y. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
Z. A dry air holding charge shall be provided in the indoor section.
AA.
The outdoor unit shall be pre-charged with R-410a refrigerant for 70 feet of
refrigerant tubing - PUZ-A42NHA for 100 feet.
BB.
System efficiency shall meet or exceed 13.0 SEER.
1.03 Delivery, Storage and Handling
G. Unit shall be stored and handled according to the manufacturer’s recommendations.
H. The wireless controller shall be shipped inside the carton with the indoor unit and
able to withstand 105°F storage temperatures and 95% relative humidity without
adverse effect.
Part 2 – Warranty
2.05 The units shall have a manufacturer’s parts and defects warranty for a period one (1)
year from date of installation. The compressor shall have a warranty of 6 years from
Page 51 of 82
PCA-AC (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
date of installation. If, during this period, any part should fail to function properly due to
defects in workmanship or material, it shall be replaced or repaired at the discretion of
the manufacturer. This warranty does not include labor.
2.06 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 - Performance
Each system shall perform in accordance to the ratings shown in the table below.
Performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the indoor
unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit.
System Model Number
PCA-A24GA
PCA-A30GA
PCA-A36GA
PCA-A42GA
Capacity
Btu/h
12,000 - 24,000
12,000 - 30,000
12,000 - 35,000
18,000 - 42,000
TPW SEER CFM (Hi)
2,500
4,100
4,630
5,070
13.4
13.0
13.1
13.8
635
635
880
880
TPW = Total Power Watts
Part 4 – Design
4.1 Indoor Unit
The indoor unit shall be factory assembled, wired and tested. Contained within the unit shall
be all factory wiring and internal piping, control circuit board and fan motor. The unit in
conjunction with the wired, wall mounted controller shall have a self-diagnostic function,
3-minute time delay mechanism, an auto restart function, and a test run switch. Indoor unit
and refrigerant pipes shall be purged with dry nitrogen before shipment from the factory.
4.2 Unit Cabinet
The casing shall be ABS plastic and have a Munsell 0.70Y 8.59/0.97 finish. Cabinet shall be
designed for suspension mounting and horizontal operation. The rear cabinet panel shall have
provisions for a field installed filtered outside air intake connection.
4.3 Fan
The evaporator fan shall have three high performance, double inlet, forward curve sirocco
fans driven by a single motor. The fans shall be statically and dynamically balanced and run
on a motor with permanently lubricated bearings. The indoor fan shall consist of four (4)
speeds: Low, M1, M2, and Hi.
4.4 Vane
There shall be a motorized horizontal vane to automatically direct air flow in a horizontal and
downward direction for uniform air distribution. The horizontal vane shall provide a choice
of five (5) vertical airflow patterns selected by remote control: 100% horizontal flow, 80%
horizontal flow (plus 20% downward airflow), 60% horizontal airflow (plus 40% downward
airflow), 40% horizontal airflow (plus 60% downward airflow), and swing. The horizontal
vane shall significantly decrease downward air resistance for lower noise levels, and shall
close the outlet port when operation is stopped. There shall also be a set of vertical vanes to
provide horizontal swing airflow movement selected by remote control.
Page 52 of 82
PCA-AC (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
4.5 Filter
Return air shall be filtered by means of an easily removable washable filter.
4.6 Coil
The evaporator coil shall be of nonferrous construction with pre-coated aluminum strake fins
on copper tubing. The multi-angled heat exchanger shall have a modified fin shape that
reduces air resistance for a smoother, quieter airflow. All tube joints shall be brazed with
PhosCopper or silver alloy. The coils shall be pressure tested at the factory. A condensate pan
and drain shall be provided under the coil.
4.7 Electrical
4.7.1
The electrical power of the unit shall be 208 volts or 230 volts, 1 phase, 60 hertz. The system
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
power to the indoor unit shall be supplied from the outdoor unit, using the Mitsubishi Electric
A-Control system. For A-Control, a three (3) conductor AWG-14 wire with ground shall
provide power feed and bi-directional control transmission between the outdoor and indoor
units.
4.8 Control
4.8.1
The control system shall consist of two (2) microprocessors, one on each indoor and outdoor
unit. Field wiring shall run directly from the indoor unit interconnected by a single non-polar
two-wire AWG-16 stranded cable to the wall mounted controller with no splices. The control
system between the outdoor unit and indoor unit shall be supplied from the outdoor unit using
the Mitsubishi A- Control. Reference 4.7.1 Electrical.
4.8.2
The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of
compressor run time. Diagnostics codes for indoor and outdoor units shall be displayed on the
wired controller panel.
4.8.3
The microprocessor located in the indoor unit shall have the capability of monitoring return
air temperature and indoor coil temperature, receiving and processing commands from the
wired controller, providing emergency operation and controlling the outdoor unit.
4.8.4
The indoor unit shall be connected to a wall mounted wired controller to perform input
functions necessary to operate the system. The wired controller shall have a large
multi-language DOT liquid crystal display (LCD) presenting contents in eight (8) different
languages, including English, French, Chinese, German, Japanese, Spanish, Russian, and
Italian. There shall be a built-in weekly timer with up to eight pattern settings per day.
4.8.5
The controller shall consist of an On/Off button, Increase/Decrease Set Temperature buttons,
a Cool/Dry/Fan mode selector, a Timer Menu button, a Timer On/Off button, Set Time
Page 53 of 82
PCA-AC (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
buttons, a Fan Speed selector, a Vane Position selector, a Louver Swing button, a Ventilation
button, a Test Run button, and a Check Mode button. The controller shall have a built-in
temperature sensor.
4.8.6
Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C). Temperature
changes shall be by increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to 30°C).
4.8.7
The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor), compressor
operating conditions (including running current, frequency, input voltage, On/Off status and
operating time), LEV opening pulses, sub cooling and discharge super heat.
4.8.8
Normal operation of the wired controller shall provide individual system control in which one
wired controller and one indoor unit are installed in the same room. The controller shall have
the capability of controlling up to a maximum of sixteen systems at a maximum developed
control cable distance of 1,500 feet (500 meters).
4.8.9
The control voltage from the wired controller to the indoor unit shall be 12 volts, DC. The
control signal between the indoor and outdoor unit shall be pulse signal 24 volts DC. Up to
two wired controllers shall be able to be used to control one unit.
4.8.10
Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off and mode switching. The controller shall have the capability to provide
sequential starting with up to fifty seconds delay.
Part 5 - Outdoor Unit
5.1 The outdoor unit shall be compatible with the three different types of indoor units (PKA
- wall mounted, PCA - ceiling suspending, and PLA - four way ceiling cassette). The
connected indoor unit must be of the same capacity as the outdoor unit.
5.2 Models PUY-A24NHA and PUY-A36NHA shall have the option to connect to two indoor
units, within the same confined space, to improve air distribution (total capacity shall be
equivalent to outdoor unit).
5.3 The outdoor unit shall be equipped with a control board that interfaces with the indoor
unit to perform all necessary operation functions. The outdoor unit shall be capable of
operating at 0°F, (-18°C) ambient temperature without additional low ambient controls
(optional wind baffle may be required). The outdoor unit shall be able to operate with a
maximum height difference of 100 feet (30 meters) and have a maximum refrigerant tubing
length of 165 feet (50 meters) between indoor and outdoor units without the need for line size
changes, traps or additional oil.
5.4 Models PUY-A24NHA, PUY-A30NHA and PUY-A36NHA shall be pre-charged for a
maximum of 70 feet (20 meters) of refrigerant tubing. Model PUY-A42NHA shall be
pre-charged for a maximum of 100 feet (30 meters) of refrigerant tubing.
Page 54 of 82
PCA-AC (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
5.5 The outdoor unit shall be completely factory assembled, piped, and wired. Each unit
must be test run at the factory.
5.6 Cabinet
The casing shall be constructed from galvanized steel plate, coated with a finished with
an electrostatically applied, thermally fused acrylic or polyester powder coating for
corrosion protection and have a munsell 3Y 7.8/1.1 finish. The fan grille shall be of
ABS plastic.
5.7 Fan
Models PUY-A24NHA, PUY-A30NHA, and PUY-A36NHA shall be furnished with an AC
fan motor. Model PUY-A42NHA shall have two (2) DC fan motors. The fan motor shall be
of aerodynamic design for quiet operation, and the fan motor bearings shall be permanently
lubricated. The outdoor unit shall have horizontal discharge airflow. The fan shall be
mounted in front of the coil, pulling air across it from the rear and dispelling it through the
front. The fan shall be provided with a raised guard to prevent contact with moving parts.
5.8 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce
debris build up. The coil shall be protected with an integral metal guard. Refrigerant flow
from the condenser shall be controlled by means of linear expansion valve (LEV) metering
orifice. The LEV shall be control by a microprocessor controlled step motor.
5.9 Compressor (VCSI)
The compressor for models PUY-A24NHA, PUY-A30NHA and PUY-A36NHA shall be a
DC rotary compressor with Variable Compressor Speed Inverter Technology. The
compressor for model PUY-A42NHA shall be a scroll compressor with variable speed
inverter technology. The compressor shall be driven by inverter circuit to control compressor
speed. The compressor speed shall dynamically vary to match the room load for significantly
increasing the efficiency of the system which results in vast energy savings. To prevent liquid
from accumulating in the compressor during the off cycle, a minimal amount of current shall
be intermittently applied to the compressor motor to maintain enough heat. The outdoor unit
shall have an accumulator and high pressure safety switch. The compressor shall be mounted
to avoid the transmission of vibration.
5.10 Electrical
The electrical power of the unit shall be 208volts or 230 volts, 1 phase, 60 hertz. The unit
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
outdoor unit shall be controlled by the microprocessor located in the indoor unit.
The control signal between the indoor unit and the outdoor unit shall be pulse signal 24 volts
DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input power
supply.
Page 55 of 82
PCA-AC (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits
Section 15700 – Mechanical HVAC
Capacity Range: 2 to 3.5 Tons Nominal
Mitsubishi Model Number: PCA (ceiling suspended) Heat Pump series.
Part 1 – General
1.1 System Description
The Heat Pump system shall be a Mitsubishi Electric split system with Variable Speed
Inverter Compressor technology. The system shall consist of a ceiling-suspended indoor
section with wired, wall mounted controller and a horizontal discharge, single phase outdoor
unit.
System Model Numbers
Indoor Units Outdoor Units
PCA-A24GA PUZ-A24NHA
PCA-A30GA PUZ-A30NHA
PCA-A36GA PUZ-A36NHA
PCA-A42GA PUZ-A42NHA
1.2 Quality Assurance
A. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)
and shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning Refrigeration
Institute’s (ARI) Standard 210 and bear the ARI Certification label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. The outdoor unit shall be pre-charged with R-410a refrigerant for 70 feet (20
meters) of refrigerant tubing - PUZ-A42NHA for 100 feet (30 meters).
G. System efficiency shall meet or exceed 13.0 SEER.
1.3 Delivery, Storage and Handling
A. Unit shall be stored and handled according to the manufacturer’s recommendations.
B. The wireless controller shall be shipped inside the carton with the indoor unit and
able to withstand 105°F storage temperatures and 95% relative humidity without
adverse effect.
Part 2 – Warranty
2.1 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year
from date of installation. The compressor shall have a warranty of 6 years from date of
installation. If, during this period, any part should fail to function properly due to defects
Page 56 of 82
PCA-HP (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
in workmanship or material, it shall be replaced or repaired at the discretion of the
manufacturer. This warranty does not include labor.
2.2 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 - Performance
3.1 Each system shall perform in accordance to the ratings shown in the table below.
Cooling performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the
indoor unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit. Heating
performance shall be based on 70°F DB, 60°F WB (21.1°C DB, 15.6°C WB) for the indoor
unit and 47°F DB, 15°F WB (8.3°C DB, 6.1°C WB) for the outdoor unit.
System
Model
Number
PCA-A24GA
PCA-A30GA
PCA-A36GA
PCA-A42GA
Cooling
Capacity
Btu/h
12,000 –
24,000
12,000 –
30,000
12,000 –
35,000
18,000 –
42,000
Heating
TPW
TPW
Capacity
SEER
Cooling Heating
Btu/h
12,000 –
2,500
2,570
13.4
28,000
12,000 –
4,100
3,390
13.0
34,000
12,000 –
4,630
3,490
13.1
38,000
18,000 –
5,070
4,850
13.8
48,000
HSPF
IV (V)
8.5
(6.8)
8.5
(6.8)
8.3
(6.7)
9.3
(7.3)
CFM
(Hi)
635
635
880
880
TPW = Total Power Watts
Part 4 - Design
4.1 Indoor Unit
The indoor unit shall be factory assembled, wired and tested. Contained within the unit shall
be all factory wiring and internal piping, control circuit board and fan motor. The unit in
conjunction with the wired, wall mounted controller shall have a self-diagnostic function,
3-minute time delay mechanism, an auto restart function, and a test run switch. Indoor unit
and refrigerant pipes shall be purged with dry nitrogen before shipment from the factory.
4.2 Unit Cabinet
The casing shall be ABS plastic and have a Munsell 0.70Y 8.59/0.97 finish. Cabinet shall be
designed for suspension mounting and horizontal operation. The rear cabinet panel shall have
provisions for a field installed filtered outside air intake connection.
4.3 Fan
The evaporator fan shall have three high performance, double inlet, forward curve sirocco
fans driven by a single motor. The fans shall be statically and dynamically balanced and run
on a motor with permanently lubricated bearings. The indoor fan shall consist of four (4)
speeds: Low, M1, M2, and Hi.
4.4 Vane
There shall be a motorized horizontal vane to automatically direct air flow in a horizontal and
downward direction for uniform air distribution. The horizontal vane shall provide a choice
of five (5) vertical airflow patterns selected by remote control: 100% horizontal flow, 80%
Page 57 of 82
PCA-HP (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
horizontal flow (plus 20% downward airflow), 60% horizontal airflow (plus 40% downward
airflow), 40% horizontal airflow (plus 60% downward airflow), and swing. The horizontal
vane shall significantly decrease downward air resistance for lower noise levels, and shall
close the outlet port when operation is stopped. There shall also be a set of vertical vanes to
provide horizontal swing airflow movement selected by remote control.
4.5 Filter
Return air shall be filtered by means of an easily removable washable filter.
4.6 Coil
The evaporator coil shall be of nonferrous construction with pre-coated aluminum strake fins
on copper tubing. The multi-angled heat exchanger shall have a modified fin shape that
reduces air resistance for a smoother, quieter airflow. All tube joints shall be brazed with
PhosCopper or silver alloy. The coils shall be pressure tested at the factory. A condensate pan
and drain shall be provided under the coil.
4.7 Electrical
4.7.1
The electrical power of the unit shall be 208 volts or 230 volts, 1 phase, 60 hertz. The system
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
power to the indoor unit shall be supplied from the outdoor unit, using the Mitsubishi Electric
A-Control system. For A-Control, a three (3) conductor AWG-14 wire with ground shall
provide power feed and bi-directional control transmission between the outdoor and indoor
units.
4.8 Control
4.8.1 The control system shall consist of two (2) microprocessors, one on each indoor and
outdoor unit. Field wiring shall run directly from the indoor unit interconnected by a single
non-polar two-wire AWG-16 stranded cable to the wall mounted controller with no splices.
The control system between the outdoor unit and indoor unit shall be supplied from the
outdoor unit using the Mitsubishi A- Control. Reference 4.7.1 Electrical.
4.8.2
The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of
compressor run time. Diagnostics codes for indoor and outdoor units shall be displayed on the
wired controller panel.
4.8.3
The microprocessor located in the indoor unit shall have the capability of monitoring return
air temperature and indoor coil temperature, receiving and processing commands from the
wired controller, providing emergency operation and controlling the outdoor unit.
4.8.4
The indoor unit shall be connected to a wall mounted wired controller to perform input
functions necessary to operate the system. The wired controller shall have a large
multi-language DOT liquid crystal display (LCD) presenting contents in eight (8) different
languages, including English, French, Chinese, German, Japanese, Spanish, Russian, and
Italian.
Page 58 of 82
PCA-HP (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
4.8.5
There shall be a built-in weekly timer with up to eight pattern settings per day. The controller
shall consist of an On/Off button, Increase/Decrease Set Temperature buttons, a Cool/Dry/Fan
mode selector, a Timer Menu button, a Timer On/Off button, Set Time buttons, a Fan Speed
selector, a Vane Position selector, a Louver Swing button, a Ventilation button, a Test Run
button, and a Check Mode button. The controller shall have a built-in temperature sensor.
Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C). Temperature
changes shall be by increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to 30°C).
4.8.6
The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor), compressor
operating conditions (including running current, frequency, input voltage, On/Off status and
operating time), LEV opening pulses, sub cooling and discharge super heat.
4.8.7
Normal operation of the wired controller shall provide individual system control in which one
wired controller and one indoor unit are installed in the same room. The controller shall have
the capability of controlling up to a maximum of sixteen systems at a maximum developed
control cable distance of 1,500 feet (500 meters).
4.8.8
The control voltage from the wired controller to the indoor unit shall be 12 volts, DC. The
control signal between the indoor and outdoor unit shall be pulse signal 24 volts DC. Up to
two wired controllers shall be able to be used to control one unit.
4.8.9
Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off and mode switching. The controller shall have the capability to provide
sequential starting with up to fifty seconds delay.
Part 5 - Outdoor Unit
5.1 The outdoor unit shall be compatible with the three different types of indoor units (PKA wall mounted, PCA - ceiling suspending, and PLA - four way ceiling cassette). The
connected indoor unit must be of the same capacity as the outdoor unit.
5.2 Models PUY-A24NHA and PUY-A36NHA shall have the option to connect to two indoor
units, within the same confined space, to improve air distribution (total capacity shall be
equivalent to outdoor unit).
5.3 The outdoor unit shall be equipped with a control board that interfaces with the indoor unit
to perform all necessary operation functions.
5.7 The outdoor unit shall be capable of operating at 0°F (-18°C) ambient temperature
without additional low ambient controls (optional wind baffle may be required).
5.8 The outdoor unit shall be able to operate with a maximum height difference of 100 feet (30
meters) between indoor and outdoor units.
5.9 System shall have a maximum refrigerant tubing length of 165 feet (50 meters) between
indoor and outdoor units without the need for line size changes, traps or additional oil.
5.10 Models PUZ-A24NHA, PUZ-A30NHA and PUZ-A36NHA shall be pre-charged for a
maximum of 70 feet (20 meters) of refrigerant tubing. Model PUZ-A42NHA shall be
Page 59 of 82
PCA-HP (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
pre-charged for a maximum of 100 feet (30 meters) of refrigerant tubing. The outdoor unit
shall be completely factory assembled, piped, and wired. Each unit must be test run at the
factory.
5.11
Cabinet
The casing shall be constructed from galvanized steel plate, coated with a finished with
an electrostatically applied, thermally fused acrylic or polyester powder coating for
corrosion protection and have a munsell 3Y 7.8/1.1 finish. The fan grille shall be of
ABS plastic.
.
5.7 Fan
Models PUZ-A24NHA, PUZ-A30NHA, and PUZ-A36NHA shall be furnished with an AC
fan motor. Model PUZ-A42NHA shall have two (2) DC fan motors. The fan motor shall be
of aerodynamic design for quiet operation, and the fan motor bearings shall be permanently
lubricated. The outdoor unit shall have horizontal discharge airflow. The fan shall be
mounted in front of the coil, pulling air across it from the rear and dispelling it through the
front. The fan shall be provided with a raised guard to prevent contact with moving parts.
5.8 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce
debris build up. The coil shall be protected with an integral metal guard. Refrigerant flow
from the condenser shall be controlled by means of linear expansion valve (LEV) metering
orifice. The LEV shall be control by a microprocessor controlled step motor.
5.9 Compressor
The compressor for models PUY-A24NHA, PUY-A30NHA and PUY-A36NHA shall be a
DC rotary compressor with Variable Compressor Speed Inverter Technology. The
compressor for model PUY-A42NHA shall be a scroll compressor with variable speed
technology. The compressor shall be driven by inverter circuit to control compressor speed.
The compressor speed shall dynamically vary to match the room load for significantly
increasing the efficiency of the system which results in vast energy savings. To prevent liquid
from accumulating in the compressor during the off cycle, a minimal amount of current shall
be intermittently applied to the compressor motor to maintain enough heat. The outdoor unit
shall have an accumulator and high pressure safety switch. The compressor shall be mounted
to avoid the transmission of vibration.
5.10 Electrical
The electrical power of the unit shall be 208volts or 230 volts, 1 phase, 60 hertz. The unit
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
outdoor unit shall be controlled by the microprocessor located in the indoor unit.
The control signal between the indoor unit and the outdoor unit shall be pulse signal 24 volts
DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input power
supply.
Page 60 of 82
PCA-HP (ceiling suspended) Guide Spec © 2008 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits
Section 15700 – Mechanical HVAC
Capacity Range: 1.0 to 1.5 Tons Nominal
Mitsubishi Model Number: PEA (Ducted) Cooling only series.
Part 1 – General
1.01 System Description
The air conditioning system shall be a Mitsubishi Electric split system with Variable Speed
Inverter Compressor technology. The system shall consist of an extremely compact,
low-profile (7-7/8”), ducted indoor section with wired, wall mounted controller and a
horizontal discharge, single phase outdoor unit.
System Model Numbers
Indoor Units Outdoor Units
PEA-A12AA PUY-A12NHA
PEA-A18AA PUY-A18NHA
1.02 Quality Assurance
H. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)
and shall bear the ETL label.
I. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
J. The units shall be rated in accordance with Air-conditioning, Heating, and
Refrigeration Institute’s (AHRI) Standard 210 and bear the AHRI Certification
label.
K. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
L. A dry air holding charge shall be provided in the indoor section.
M. The outdoor unit shall be pre-charged with R-410a refrigerant for 70 feet of
refrigerant tubing.
N. System efficiency shall meet or exceed 13.8 SEER.
1.03 Delivery, Storage and Handling
C. Unit shall be stored and handled according to the manufacturer’s recommendations.
D. The wireless controller shall be shipped inside the carton with the indoor unit and
able to withstand 105°F storage temperatures and 95% relative humidity without
adverse effect.
Part 2 – Warranty
2.01 The units shall have a manufacturer’s parts and defects warranty for a period one (1)
year from date of installation. The compressor shall have a warranty of 6 years from
date of installation. If, during this period, any part should fail to function properly due to
defects in workmanship or material, it shall be replaced or repaired at the discretion of
the manufacturer. This warranty does not include labor.
Page 61 of 82
Guide Specification PEA-AA Air Conditioning System
©2009 Mitsubishi Electric / HVAC
2.02 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 - Performance
Each system shall perform in accordance to the ratings shown in the table below.
Performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the indoor
unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit.
System Model
Number
PEA-A12AA
PEA-A18AA
Capacity
Btu/h
6,000 - 12,000
8,000 - 18,000
TPW
SEER
1,240
2,150
13.8
14.3
CFM
(Hi/Dry)
388
635
ESP
0.20”
0.20”
TPW = Total Power Watts
Part 4 – Design
4.1 Indoor Unit
4.1.1 The indoor unit shall be factory assembled, wired and tested. Contained within the
unit shall be all factory wiring and internal piping, control circuit board and fan motor.
The unit in conjunction with the wired, wall mounted controller shall have a
self-diagnostic function, 3-minute time delay mechanism, an auto restart function, and
a test run switch. Indoor unit and refrigerant pipes shall be purged with dry nitrogen
before shipment from the factory.
4.1.2 The indoor unit sound pressure level shall not exceed the following values:
18,000 BTU/h unit = 30 dB(A) in low fan speed, 34 dB(A) in med fan speed and 38
dB(A) in high fan speed
4.2 Unit Cabinet
4.2.1 The cabinet shall be space saving, low profile, horizontal, ducted type. Formed cabinet
shall be constructed of G-60 galvanized steel with applied insulation to prevent
condensation on outer surfaces.
4.2.2 The cabinet shall be provided with four mounting brackets to accommodate
suspension from threaded rod or structural support located on the side panels in all
four corners. Brackets shall be suitable for supporting the weight of the indoor unit.
4.2.3 The indoor unit cabinet shall be equipped with a ducted air outlet and ducted return air
connection.
4.3 Fan:
4.3.1 The indoor unit fan unit shall be an assembly with two (2) for 12,000 BTU/h size and
four (4) for 18,000 BTU/h size Sirocco fans direct driven by a single motor.
4.3.2 Fan shall develop airflow to deliver up to 0.20 inches wg of external static pressure.
4.3.3 The indoor fans shall be statically and dynamically balanced to run on a motor with
permanently lubricated bearings.
4.3.4 The indoor fans shall operate on any of three (3) speeds, High, Mid, and Low.
4.4 Filter
Return air shall be filtered by means of a standard factory installed return air filter.
4.5 Coil
4.5.1 The indoor coil shall be of nonferrous construction with smooth plate fins on copper
tubing. The tubing shall have inner grooves for high efficiency heat exchange. All tube
joints shall be brazed with PhosCopper or silver alloy. The coils shall be pressure
tested at the factory.
4.5.2 A condensate pan and with two (2) drains shall be provided under the coil.
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Guide Specification PEA-AA Air Conditioning System
©2009 Mitsubishi Electric / HVAC
4.5.3 In addition to the two (2) gravity drains, the indoor unit shall be provided with an
integral condensate lift mechanism able to raise drain water 21 inches above the
condensate pan. Lift mechanism shall incorporate a safety sensor system to shut down
the indoor fan and the compressor in the outdoor unit in the event of high level of
condensate in the drain pan.
4.6 Electrical
4.6.1 The electrical power of the unit shall be 208 volts or 230 volts, 1 phase, 60 hertz. The
system shall be capable of satisfactory operation within voltage limits of 198 volts to
253 volts. The power to the indoor unit shall be supplied from the outdoor unit, using
Mitsubishi Electric A-Control system.
4.7 Control
4.7.1 The control system shall consist of two (2) microprocessors, one on each indoor and
outdoor unit, interconnected by a single non-polar two-wire cable. Field wiring shall
run directly from the indoor unit to the wall mounted controller with no splices.
4.7.2 For A-Control, a three (3) conductor 14 ga. AWG wire with ground shall provide
power feed and bi-directional control transmission between the outdoor and indoor
units.
4.7.3 The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of
compressor run time. Diagnostics codes for indoor and outdoor units shall be
displayed on the wired controller panel.
4.7.4 The microprocessor located in the indoor unit shall have the capability of monitoring
return air temperature and indoor coil temperature, receiving and processing
commands from the wired controller, providing emergency operation and controlling
the outdoor unit.
4.7.5 The indoor unit shall be connected to a wall mounted wired controller to perform input
functions necessary to operate the system. The wired controller shall have a large
multi-language DOT liquid crystal display (LCD) presenting contents in eight (8)
different languages, including English, French, Chinese, German, Japanese, Spanish,
Russian, and Italian. There shall be a built-in weekly timer with up to eight pattern
settings per day.
4.7.6 The controller shall consist of an On/Off button, Increase/Decrease Set Temperature
buttons, a Cool/Dry/Fan mode selector, a Timer Menu button, a Timer On/Off button,
Set Time buttons, a Fan Speed selector, a Ventilation button, a Test Run button, and a
Check Mode button. The controller shall have a built-in temperature sensor.
4.7.7 Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C). Temperature
changes shall be by increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to
30°C).
4.7.8 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor),
compressor operating conditions (including running current, frequency, input voltage,
On/Off status and operating time), LEV opening pulses, sub cooling and discharge
super heat.
4.7.9 Normal operation of the wired controller shall provide individual system control in
which one wired controller and one indoor unit are installed in the same room. The
controller shall have the capability of controlling up to a maximum of sixteen systems
at a maximum developed control cable distance of 1,500 feet (500 meters).
Page 63 of 82
Guide Specification PEA-AA Air Conditioning System
©2009 Mitsubishi Electric / HVAC
4.7.10 The control voltage from the wired controller to the indoor unit shall be 12/24 volts,
DC. The control signal between the indoor and outdoor unit shall be pulse signal 24
volts DC. Up to two wired controllers shall be able to be used to control one unit.
Part 5 - Outdoor Unit
5.1 General
5.1.1 The PUY outdoor unit shall be compatible with the four different types of indoor units
(PEA – ducted, PKA - wall mounted, PCA - ceiling suspending, and PLA - four way ceiling
cassette).
5.1.2 The connected indoor unit must be of the same capacity as the outdoor unit.
5.1.3 The outdoor unit shall be equipped with a control board that interfaces with the indoor
unit to perform all necessary operation functions.
5.1.4 The outdoor unit shall be capable of operating at 0°F, (-18°C) ambient temperature
without additional low ambient controls (optional wind baffle may be required).
5.1.5 The outdoor unit shall be able to operate with a maximum height difference of 100 feet
(30 meters) and have a maximum refrigerant tubing length of 100 feet (30 meters) between
indoor and outdoor units without the need for line size changes, traps or additional oil.
5.1.6 Models PUY-A12NHA, and PUY-A18NHA shall be pre-charged for a maximum of 70
feet (20 meters) of refrigerant tubing.
5.1.7 The outdoor unit shall be completely factory assembled, piped, and wired. Each unit
must be test run at the factory.
5.2 Cabinet
The casing shall be constructed from galvanized steel plate, coated with a finished with
an electrostatically applied, thermally fused acrylic or polyester powder coating for
corrosion protection and have a munsell 3Y 7.8/1.1 finish. The fan grille shall be of
ABS plastic.
5.3 Fan
5.3.1 Models PUY-A12NHA, and PUY-A18NHA shall be furnished with an AC fan
motor. The fan shall be of aerodynamic design for quiet operation, and the fan motor bearings
shall be permanently lubricated.
5.3.2 The outdoor unit shall have horizontal discharge airflow. The fan shall be mounted
in front of the coil, pulling air across it from the rear and dispelling it through the front. The
fan shall be provided with a raised guard to prevent contact with moving parts.
5.4 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce
debris build up. The coil shall be protected with an integral metal guard. Refrigerant flow
from the condenser shall be controlled by means of linear expansion valve (LEV) metering
orifice. The LEV shall be control by a microprocessor controlled step motor.
5.5 Compressor (VCSI)
5.5.1 The compressor for models PUY-A12NHA and PUY-A18NHA shall be a DC rotary
compressor with Variable Compressor Speed Inverter Technology. The compressor
shall be driven by inverter circuit to control compressor speed. The compressor speed
shall dynamically vary to match the room load for significantly increasing the
efficiency of the system which results in vast energy savings.
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Guide Specification PEA-AA Air Conditioning System
©2009 Mitsubishi Electric / HVAC
5.5.2 To prevent liquid from accumulating in the compressor during the off cycle, a minimal
amount of current shall be intermittently applied to the compressor motor to maintain
enough heat.
5.5.3 The outdoor unit shall have an accumulator and high pressure safety switch. The
compressor shall be mounted to avoid the transmission of vibration.
6 Electrical
6.1.1 The electrical power of the unit shall be 208volts or 230 volts, 1 phase, 60 hertz. The
unit shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts.
6.1.2 The outdoor unit shall be controlled by the microprocessor located in the indoor unit.
6.1.3 The control signal between the indoor unit and the outdoor unit shall be pulse signal 24
volts DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input
power supply.
Page 65 of 82
Guide Specification PEA-AA Air Conditioning System
©2009 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits
Section 15700 – Mechanical HVAC
Capacity Range: 1.5 Tons Nominal
Mitsubishi Model Number: PEA (Ducted) Heat Pump series.
Part 1 – General
1.1 System Description
The Heat Pump system shall be a Mitsubishi Electric split system with Variable Speed
Inverter Compressor technology. The system shall consist of an extremely compact,
low-profile (7-7/8”), ducted indoor section with wired, wall mounted controller and a
horizontal discharge, single phase outdoor unit.
System Model Numbers
Indoor Units Outdoor Units
PEA-A18AA
PUZ-A18NHA
1.2 Quality Assurance
A. The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL)
and shall bear the ETL label.
B. All wiring shall be in accordance with the National Electrical Code (N.E.C.).
C. The units shall be rated in accordance with Air-conditioning, Heating and
Refrigeration Institute’s (AHRI) Standard 240 and bear the AHRI Certification
label.
D. The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001,
which is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).
E. A dry air holding charge shall be provided in the indoor section.
F. The outdoor unit shall be pre-charged with R-410a refrigerant for 70 feet (20
meters) of refrigerant tubing.
G. System efficiency shall meet or exceed 14.3 SEER and 10.0 HSPF.
1.3 Delivery, Storage and Handling
A. Unit shall be stored and handled according to the manufacturer’s recommendations.
B. The wireless controller shall be shipped inside the carton with the indoor unit and
able to withstand 105°F storage temperatures and 95% relative humidity without
adverse effect.
Part 2 – Warranty
2.1 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year
from date of installation. The compressor shall have a warranty of 6 years from date of
installation. If, during this period, any part should fail to function properly due to defects
in workmanship or material, it shall be replaced or repaired at the discretion of the
manufacturer. This warranty does not include labor.
Page 66 of 82
Guide Specification PEA-AA Heat Pump System
©2009 Mitsubishi Electric / HVAC
2.2 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 - Performance
3.1 Each system shall perform in accordance to the ratings shown in the table below.
Cooling performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the
indoor unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit. Heating
performance shall be based on 70°F DB, 60°F WB (21.1°C DB, 15.6°C WB) for the indoor
unit and 47°F DB, 15°F WB (8.3°C DB, 6.1°C WB) for the outdoor unit.
System Model
Number
PEA-A18AA
Cooling
Capacity
Btu/h
8,000 –
18,000
Heating
Capacity
Btu/h
8,000 –
20,000
TPW
Cooling
TPW
Heating
SEER
HSPF
IV
CFM
(Hi/Dry)
2,150
1,540
14.3
10.0
635
TPW = Total Power Watts
Part 4 - Design
4.1 Indoor Unit
4.1.1 The indoor unit shall be factory assembled, wired and tested. Contained within the
unit shall be all factory wiring and internal piping, control circuit board and fan motor.
The unit in conjunction with the wired, wall mounted controller shall have a
self-diagnostic function, 3-minute time delay mechanism, an auto restart function, and
a test run switch. Indoor unit and refrigerant pipes shall be purged with dry nitrogen
before shipment from the factory.
4.1.2 The indoor unit sound pressure level shall not exceed the following values:
12,000 BTU/h unit = 23 dB(A) in low fan speed, 28 dB(A) in med fan speed and
33 dB(A) in high fan speed
18,000 BTU/h unit = 30 dB(A) in low fan speed, 34 dB(A) in med fan speed and
38 dB(A) in high fan speed
4.2 Unit Cabinet
4.2.1 The cabinet shall be space saving, low profile, horizontal, ducted type. Formed cabinet
shall be constructed of G-60 galvanized steel with applied insulation to prevent
condensation on outer surfaces.
4.2.2 The cabinet shall be provided with four mounting brackets to accommodate
suspension from threaded rod or structural support located on the side panels in all
four corners. Brackets shall be suitable for supporting the weight of the indoor unit.
4.2.3 The indoor unit cabinet shall be equipped with a ducted air outlet and ducted rear
return air connection.
4.3 Fan:
4.3.1 The indoor unit fan unit shall be an assembly with four (4) Sirocco fans direct driven
by a single motor.
4.3.2 Fan shall develop airflow to deliver up to 0.20 inches wg of external static pressure.
4.3.3 The indoor fans shall be statically and dynamically balanced to run on a motor with
permanently lubricated bearings.
4.3.4 The indoor fans shall operate on any of three (3) speeds, High, Mid, and Low.
4.4 Filter
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Guide Specification PEA-AA Heat Pump System
©2009 Mitsubishi Electric / HVAC
ESP
0.20”
Return air shall be filtered by means of a standard factory installed return air filter.
4.5 Coil
4.5.1 The indoor coil shall be of nonferrous construction with smooth plate fins on copper
tubing. The tubing shall have inner grooves for high efficiency heat exchange. All tube
joints shall be brazed with PhosCopper or silver alloy. The coils shall be pressure
tested at the factory.
4.5.2 A condensate pan and with two (2) drains shall be provided under the coil.
4.5.3 In addition to the two (2) gravity drains, the indoor unit shall be provided with an
integral condensate lift mechanism able to raise drain water 21 inches above the
condensate pan. Lift mechanism shall incorporate a safety sensor system to shut down
the indoor fan and the compressor in the outdoor unit in the event of high level of
condensate in the drain pan.
4.6 Electrical
The electrical power of the unit shall be 208 volts or 230 volts, 1 phase, 60 hertz. The system
shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The
power to the indoor unit shall be supplied from the outdoor unit, using Mitsubishi Electric
A-Control system.
4.7 Control
4.7.1 The control system shall consist of two (2) microprocessors, one on each indoor and
outdoor unit, interconnected by a single non-polar two-wire cable. Field wiring shall
run directly from the indoor unit to the wall mounted controller with no splices.
4.7.2 For A-Control, a three (3) conductor 14 ga. AWG wire with ground shall provide
power feed and bi-directional control transmission between the outdoor and indoor
units.
4.7.3 The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of
compressor run time. Diagnostics codes for indoor and outdoor units shall be
displayed on the wired controller panel.
4.7.4 The microprocessor located in the indoor unit shall have the capability of monitoring
return air temperature and indoor coil temperature, receiving and processing
commands from the wired controller, providing emergency operation and controlling
the outdoor unit.
4.7.5 The indoor unit shall be connected to a wall mounted wired controller to perform input
functions necessary to operate the system. The wired controller shall have a large
multi-language DOT liquid crystal display (LCD) presenting contents in eight (8)
different languages, including English, French, Chinese, German, Japanese, Spanish,
Russian, and Italian.
4.7.6 There shall be a built-in weekly timer with up to eight pattern settings per day. The
controller shall consist of an On/Off button, Increase/Decrease Set Temperature
buttons, a Heat/Cool/Auto/Dry mode selector, a Timer Menu button, a Timer On/Off
button, Set Time buttons, a Fan Speed selector, a Ventilation button, a Test Run button,
and a Check Mode button. The controller shall have a built-in temperature sensor.
Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C). Temperature
changes shall be by increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to
30°C).
4.7.7 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor),
Page 68 of 82
Guide Specification PEA-AA Heat Pump System
©2009 Mitsubishi Electric / HVAC
compressor operating conditions (including running current, frequency, input voltage,
On/Off status and operating time), LEV opening pulses, sub cooling and discharge
super heat. Normal operation of the wired controller shall provide individual system
control in which one wired controller and one indoor unit are installed in the same
room. The controller shall have the capability of controlling up to a maximum of
sixteen systems, as a group with the same mode and set-point for all, at a maximum
developed control cable distance of 1,500 feet (500 meters).
4.7.8 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor),
compressor operating conditions (including running current, frequency, input voltage,
On/Off status and operating time), LEV opening pulses, sub cooling and discharge
super heat.
4.7.9 The control voltage from the wired controller to the indoor unit shall be 12/24 volts,
DC. The control signal between the indoor and outdoor unit shall be pulse signal 24
volts DC. Up to two wired controllers shall be able to be used to control one unit.
4.7.10 Control system shall provide On/Off and mode switching. The controller shall have
the capability to provide sequential starting with up to fifty seconds delay.
Part 5 - Outdoor Unit
5.1 General
5.1.1 The PUZ outdoor unit shall be compatible with the four different types of indoor units
(PEA – Ducted, PKA - wall mounted, PCA - ceiling suspending, and PLA - four way
ceiling cassette). The connected indoor unit must be of the same capacity as the
outdoor unit.
5.1.2 The outdoor unit shall be equipped with a control board that interfaces with the indoor
unit to perform all necessary operation functions.
5.1.3 The outdoor unit shall be capable of operating at 0°F (-18°C) ambient temperature
without additional low ambient controls (optional wind baffle may be required).
5.1.4 The outdoor unit shall be able to operate with a maximum height difference of 100 feet
(30 meters) between indoor and outdoor units.
5.1.5 System shall have a maximum refrigerant tubing length of 100 feet (30 meters)
between indoor and outdoor units without the need for line size changes, traps or
additional oil.
5.1.6 Model PUZ-A18NHA shall be pre-charged for a maximum of 70 feet (20 meters) of
refrigerant tubing. The outdoor unit shall be completely factory assembled, piped, and
wired. Each unit must be test run at the factory.
5.12 Cabinet
5.12.1 The casing shall be constructed from galvanized steel plate, coated with a finished
with an electrostatically applied, thermally fused acrylic or polyester powder coating
for corrosion protection and have a munsell 3Y 7.8/1.1 finish. The fan grille shall be
of ABS plastic.
5.13 Fan
5.13.1 Model PUZ-A18NHA shall be furnished with an AC fan motor. The fan shall be of
aerodynamic design for quiet operation, and the fan motor bearings shall be
permanently lubricated.
5.13.2 The outdoor unit shall have horizontal discharge airflow. The fan shall be mounted in
front of the coil, pulling air across it from the rear and dispelling it through the front.
5.13.3 The fan shall be provided with a raised guard to prevent contact with moving parts.
Page 69 of 82
Guide Specification PEA-AA Heat Pump System
©2009 Mitsubishi Electric / HVAC
5.14 Coil
5.14.1 The L shaped condenser coil shall be of copper tubing with flat aluminum fins to
reduce debris build up. The coil shall be protected with an integral metal guard.
5.14.2 Refrigerant flow from the condenser shall be controlled by means of an electronic
linear expansion valve (LEV) metering device. The LEV shall be controlled by a
microprocessor controlled step motor.
5.15 Compressor
5.15.1 The compressor for the PUZ-A18NHA shall be a DC rotary compressor with Variable
Compressor Speed Inverter Technology.
5.15.2 The compressor shall be driven by inverter circuit to control compressor speed. The
compressor speed shall dynamically vary to match the room load for significantly
increasing the efficiency of the system which results in vast energy savings.
5.15.3 To prevent liquid from accumulating in the compressor during the off cycle, a minimal
amount of current shall be intermittently applied to the compressor motor to maintain
enough heat.
5.15.4 The outdoor unit shall have an accumulator and high pressure safety switch. The
compressor shall be mounted to avoid the transmission of vibration.
6 Electrical
6.1.1 The electrical power of the unit shall be 208volts or 230 volts, 1 phase, 60 hertz. The
unit shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts.
6.1.2 The outdoor unit shall be controlled by the microprocessor located in the indoor unit.
6.1.3 The control signal between the indoor unit and the outdoor unit shall be pulse signal 24
volts DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of
input power supply.
Page 70 of 82
Guide Specification PEA-AA Heat Pump System
©2009 Mitsubishi Electric / HVAC
HVAC Guide Specifications
Ductless Mini-splits – Hyper Heat PK 30/36 – Wired Controller
Section 15700 – Mechanical HVAC
Capacity Range: 2.5 to 3 Tons Nominal
Mitsubishi Model Number: PKA-A-FA (wall-mounted) / PUZ-HA30/36NHA Hyperheat type Heat Pump System – Wired wall-mounted controller
Part 1 – General
1.1 System Description
The Heat Pump system shall be a Mitsubishi Electric split system with Hyper Heat and Variable
Speed Inverter Compressor technologies. The system shall consist of a wall-mounted indoor
section with wired, wall mounted controller and a horizontal discharge, single-phase Hyper
Heat outdoor unit.
1.2 System with wired wall mounted controller
System Model Numbers
Indoor Units
Outdoor Units
PKA-A30FA
PUZ-HA30NHA
PKA-A36FA
PUZ-HA36NHA
1.3 Quality Assurance
The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL) and shall bear
the ETL label.
All wiring shall be in accordance with the National Electrical Code (N.E.C.).
The units shall be rated in accordance with Air-conditioning Refrigeration Institute’s (AHRI)
Standard 210 / 240 and bear the AHRI Certification label.
The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001, which are a
set of standards applying to product and manufacturing quality and environmental management
and protection set by the International Standards Organization (ISO
A dry air holding charge shall be provided in the indoor section.
The outdoor unit shall be pre-charged with R-410a refrigerant for 100 feet of refrigerant tubing.
System efficiency shall meet or exceed 16.0 SEER for 36,000 BTU/h and 14.5 SEER for
30,000 BTU/h.
1.4 Delivery, Storage and Handling
Unit shall be stored inside and carefully handled according to the manufacturer’s
recommendations.
The wall mounted remote controller shall be shipped inside the carton and packaged with the
indoor unit and shall be able to withstand 105°F storage temperatures and 95% relative
humidity without adverse effect.
Part 2 – Warranty
2.1 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year
from date of installation. The compressor shall have an extended warranty of 6 years from date
Page 71 of 82 Ductless Mini-splits – Hyper Heat PK Rev. 1
of installation. If, during this period, any part should fail to function properly due to defects in
workmanship or material, it shall be replaced or repaired at the discretion of the manufacturer.
2.2 This warranty does not include labor.
2.3 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 Performance
3.1 Each system shall perform in accordance to the ratings shown in the table below.
Cooling performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the
indoor unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit.
Heating performance shall be based on 70°F DB, 60°F WB (21.1°C DB, 15.6°C WB) for the
indoor unit and 47°F DB, 43°F WB (8.3°C DB, 6.1°C WB) for the outdoor unit.
3.2a Performance Table – 30,000 BTU/h Capacity System
Cooling
Heating
System Model
TPW
TPW
Capacity Capacity
SEER
Number
Cooling Heating
Btu/h
Btu/h
PKA-A30FA
18,000 – 18,000 –
2,730
3,460
14.5
30,000
34,000
HSPF
IV (V)
COP
CFM
(Hi/Dry)
8.9
(7.2)
2.71
705
HSPF
IV (V)
COP
CFM
(Hi/Dry)
9.4
(7.3)
3.59
990
TPW = Total Power Watts
3.3a Hyper Heat Performance Table - 30,000 BTU/h Capacity System
Hyper Heat Performance
Heating
TPW
HSPF COP
At Outdoor DB
Capacity Heating
IV
Btu/h
Heating at 17°F (-8.3°C)
32,000
5,600
5.7
1.67
Heating at 5°F (-15°C)
32,000
6,370
5.0
1.47
Heating at -4°F (-20°C)
28,480
6,504
4.4
1.28
Heating at -13°F (-25°C)
25,600
6,574
3.9
1.14
3.2b Performance Table – 36,000 BTU/h Capacity System
Cooling
Heating
System Model
TPW
TPW
Capacity Capacity
SEER
Number
Cooling Heating
Btu/h
Btu/h
PKA-A36FA
18,000 – 18-+,000
5,030
3,610
16.0
34,200
– 38,000
TPW = Total Power Watts
3.3b Hyper Heat Performance Table - 36,000 BTU/h Capacity System
Hyper Heat Performance
Heating
TPW
HSPF COP
At Outdoor DB
Capacity Heating
IV
Btu/h
Heating at 17°F (-8.3°C)
38,000
5,300
7.1
2.10
Heating at 5°F (-15°C)
38,000
5,860
6.4
1.90
Heating at -4°F (-20°C)
34,200
6,072
5.6
1.65
Heating at -13°F (-25°C)
30,400
6,169
4.9
1.44
Page 72 of 82 Ductless Mini-splits – Hyper Heat PK Rev. 1
Part 4 - Design
4.1 Indoor Unit
4.1.1 Cabinet
The indoor unit cabinet shall be wall mounted by means of a factory supplied mounting plate.
The cabinet shall be formed from high strength molded plastic with front panel access for filter
cleaning and service. Cabinet color shall be Munsell 3.4Y 7.7/08.
The indoor unit shall be factory assembled, wired and tested. Contained within the indoor unit
shall be all factory wiring and internal piping, control circuit board, fan, and fan motor and
filter.
The unit, in conjunction with the wired, wall-mounted, digital controller shall have a
self-diagnostic function, 3-minute time delay mechanism, an auto restart function, and an
emergency / test run switch. Indoor unit and integral refrigerant pipes shall be purged with dry
nitrogen and caped before shipment from the factory.
4.1.2 Fan
The indoor unit fan shall be high performance, double inlet, forward curve, direct drive sirocco
fan. The fans shall be statically and dynamically balanced and run on a motor with permanently
lubricated bearings. The indoor fan shall offer two (2) speeds: Low and High.
4.3 Vane
The unit shall have a motorized horizontal vane to automatically direct supply air flow in a
vertical and downward direction for uniform air distribution. Vane position may be set in four
different angles and in “swing” to provide constant airflow movement. Vane operation is
selected from the remote controller. The horizontal vane shall significantly decrease downward
air resistance for lower noise levels, and shall close the outlet port when operation is stopped.
There shall also be a set of manually adjusted vertical vanes to provide horizontal air direction
control.
4.4 Filter
Return air shall be filtered by means of an easily removable, two section, washable filter.
4.5 Coil
The indoor unit coil shall be of nonferrous construction with pre-coated aluminum strake fins
on copper tubing. The multi-angled heat exchanger shall have a modified fin shape that reduces
air resistance for a smoother, quieter airflow. All tube joints shall be brazed with PhosCopper
or silver alloy. The coils shall be pressure tested at the factory.
A condensate pan with drain connections at both ends shall be provided under the coil.
An optional condensate pump will be provided with sensor and pick-up mounted in the
condensate pan and a float control to prevent overflow.
4.6 Electrical
The electrical power of the unit shall be 208 / 230 volts, 1-phase, 60 hertz.
The system shall be capable of satisfactory operation within voltage limits of 198 volts to 253
volts.
The indoor unit shall be provided with A-Control – a system requiring that the indoor unit to be
powered and controlled directly from the outdoor unit using a 14 gauge (AWG) 3-wire
connection plus ground providing both primary power and integrated , by-directional, digital
control signal without additional connections.
The indoor units shall not have any supplemental or “back-up” electrical heating elements.
Part 5 Control
Page 73 of 82 Ductless Mini-splits – Hyper Heat PK Rev. 1
5.1 The control system shall consist of two (2) microprocessors, one in each indoor and
outdoor unit, interconnected by A-Control. This three (3) conductor 14 ga. AWG wire with
ground method shall provide power feed and bi-directional digital control transmission
between the outdoor and indoor units.
5.2 The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of compressor
run time. Diagnostics codes for indoor and outdoor units shall be displayed on the wired
controller display panel.
5.3 The microprocessor located in the indoor unit shall have the capability of monitoring return
air temperature and indoor coil temperature, receiving and processing commands from the
wired controller, providing emergency operation and for controlling the operation of the
outdoor unit.
5.4 The indoor unit shall be connected to a deluxe wall mounted wired controller, model
PAR-21MAA, to perform input functions necessary to operate the system. The wired
controller shall have a large multi-language DOT matrix, liquid crystal display (LCD)
presenting contents in eight (8) different languages, including English, French, Chinese,
German, Japanese, Spanish, Russian, and Italian.
5.5 There shall be a built-in weekly timer with up to eight pattern settings per day. The
controller shall consist of an On/Off button, Increase/Decrease Set Temperature buttons, a
Heat / Auto / Cool / Dry / Fan mode selector, a Timer Menu button, a Timer On/Off button, Set
Time buttons, a Fan Speed selector, a Vane Position selector, a Louver Swing button, a Test
Run button, and a Check Mode button. The controller shall have a built-in temperature sensor.
Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C). Temperature changes
shall be by increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to 30°C).
5.6 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor), compressor
operating conditions (including running current, frequency, input voltage, On/Off status and
operating time), LEV opening pulses, sub cooling and discharge super heat.
5.7 Normal operation of the wired controller shall provide individual system control in which
one wired controller and one indoor unit are installed in the same room. Temperature sensing
shall be done by a Thermistor mounted in the return air stream of the indoor unit. An alternate
temperature sensor shall be located within the wall controller. Selection of the sensor is by
switch in the indoor unit.
5.8 The controller shall have the capability of controlling up to a maximum of sixteen indoor
units. All units will be in the same mode, with the same set point, fan speed, and all functions.
5.9 Controller shall operate over a maximum developed control cable distance of 1,650 feet
(500 meters).
5.10 The control voltage from the wired controller to the indoor unit shall be a digital +/-24
volts, DC signal. The control signal between the indoor and outdoor unit shall be pulse signal
24 volts DC. Up to two wired controllers shall be able to be used to control one unit.
5.11 Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off and mode switching. The controller shall have the capability to provide
sequential starting with up to fifty seconds delay.
5.12 A two wire (one pair) twisted, stranded, 18 gauge (AWG), jacketed, control cable shall be
used to connect the controller to the indoor unit.
Part 6 - Outdoor Units
Page 74 of 82 Ductless Mini-splits – Hyper Heat PK Rev. 1
6.1 The outdoor units shall be compatible with the two different types of indoor units (PKA wall mounted and PLA - four way ceiling cassette). The connected indoor unit must be of the
same capacity as the outdoor unit except that the Model PUZ-HA36NHA shall have the option
to connect to two indoor units – 18,000 BTU/h capacity (PKA-A18GA or PLA-A18BA type)
each, installed within the same confined space, to improve air distribution (total capacity shall
be equivalent to outdoor unit).
6.2 The outdoor unit shall be equipped with a control board that interfaces with the indoor unit
to perform all necessary operation functions.
6.3 The outdoor unit shall be able to operate with a maximum height difference of 100 feet (30
meters) between indoor and outdoor units. Units shall also have a maximum refrigerant
tubing length capability of 254 feet (75 meters) between indoor and outdoor units without
the need for line size changes, traps or additional oil. Units shall be pre-charged for a
maximum of 100 feet (30 meters) of refrigerant tubing. The outdoor unit shall be
completely factory assembled, piped, and wired. Each unit must be test run at the factory.
Both refrigerant lines from the outdoor unit to indoor units shall be individually insulated.
6.4 The outdoor unit shall have an Heat Interchanger circuit consisting of:
6.4.1 A heat interchanger circuit for sub-cooling liquid prior to entering the outdoor coil
during the heating mode. The interchanger shall be of a copper tube within a tube
construction.
6.4.2 The interchanger circuit refrigerant flow shall be controlled by an electronic expansion
valve.
6.5 The outdoor unit shall be capable of operating in cooling mode at 0°F (-18°C) ambient
temperature without additional low ambient controls (optional wind baffles – two pieces are required).
6.6 The outdoor unit shall have rated performance for heat operation at -13F outdoor ambient
temperature without additional low ambient controls
6.7 Outdoor unit shall have a sound rating no higher than 53 dB(A).
6.8 The outdoor unit shall have an accumulator with refrigerant level sensors and controls.
6.9 The outdoor unit shall have a high pressure safety protection, over-current protection and
DC bus protection.
6.10 Cabinet
6.10.1 The casing shall be constructed from galvanized steel plate, coated with a finished with
an electrostatically applied, thermally fused acrylic or polyester powder coating for
corrosion protection and have a munsell 3Y 7.8/1.1 finish. The fan grille shall be of
ABS plastic.
6.10.2 Fan
Model PUZ-HA30NHA and Model PUZ-HA36NHA shall be furnished with two (2) AC fan
motors. The fan motors shall be of aerodynamic design for quiet operation, and the fan motor
bearings shall be permanently lubricated. The outdoor unit shall have horizontal discharge
airflow. The fan shall be mounted in front of the outdoor coil, pulling air across the coil from
the rear and dispelling it through the front. The fan shall be provided with a raised guard to
prevent contact with moving parts.
6.10.3 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce debris
build up. The coil shall be protected with an integral metal guard. Refrigerant flow from the
condenser shall be controlled by means of an electronic linear expansion valve (LEV) metering
device. The LEV shall be controlled by a microprocessor activated stepper device.
6.10.4 Compressor
Page 75 of 82 Ductless Mini-splits – Hyper Heat PK Rev. 1
The compressor shall be a Mitsubishi Electric, DC scroll compressor with Variable Compressor
Speed Inverter Technology. The compressor shall be driven by inverter circuit to control
compressor speed. The compressor speed shall dynamically vary capacity to match the zone
load for significantly increasing the efficiency of the system which will result in considerable
energy savings. To prevent liquid from accumulating in the compressor during the off cycle, a
minimal amount of current shall be intermittently applied to the compressor motor windings to
maintain enough heat to evaporate the liquid. The compressor shall be mounted to avoid the
transmission of vibration. .
6.10.5 The outdoor unit shall be equipped with a properly sized refrigerant accumulator and
high pressure safety switch.
6.11 Electrical
6.11.1 The electrical power of the unit shall be 208 / 230 volts, 1-phase, 60 hertz. The unit shall
be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The outdoor
unit shall be controlled by the microprocessor located in the indoor unit.
6.11.2 The control signal between the indoor unit and the outdoor unit shall be pulse signal +/24 volts DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input
power supply.
Mr. Slim PK 30/36 P-Series wired controller Hyper-heat Guide Specification ©Nov 2008 Mitsubishi Electric / HVAC
Page 76 of 82 Ductless Mini-splits – Hyper Heat PK Rev. 1
HVAC Guide Specifications
Ductless Mini-splits – Hyper Heat PL 30/36
Section 15700 – Mechanical HVAC
Capacity Range: 2.5 to 3 Tons Nominal
Mitsubishi Model Number: PLA-A-BA (ceiling cassette) / PUZ-HA30/36NHA
Hyper- heat type Heat Pump System – Wired wall-mounted controller
Part 1 – General
1.1 System Description
The Heat Pump system shall be a Mitsubishi Electric split system with Hyper Heat and Variable
Speed Inverter Compressor technologies. The system shall consist of a four-way ceiling
cassette style indoor section with wired, wall-mounted controller and a horizontal discharge,
single-phase Hyper Heat outdoor unit.
1.2 System with wired wall mounted controller
System Model Numbers
Indoor Units
Outdoor Units
PLA-A30BA
PUZ-HA30NHA
PLA-A36BA
PUZ-HA36NHA
1.3 Quality Assurance
The units shall be tested by a Nationally Recognized Testing Laboratory (NRTL) and shall bear
the ETL label.
All wiring shall be in accordance with the National Electrical Code (N.E.C.).
The units shall be rated in accordance with Air-conditioning Refrigeration Institute’s (AHRI)
Standard 210 / 240 and bear the AHRI Certification label.
The units shall be manufactured in a facility registered to ISO 9001 and ISO 14001, which are a
set of standards applying to product and manufacturing quality and environmental management
and protection set by the International Standards Organization (ISO
A dry air holding charge shall be provided in the indoor section.
The outdoor unit shall be pre-charged with R-410a refrigerant for 100 feet of refrigerant tubing.
System efficiency shall meet or exceed 16.0 SEER for 36,000 BTU/h and 14.5 SEER for
30,000 BTU/h.
1.4 Delivery, Storage and Handling
Unit shall be stored inside and carefully handled according to the manufacturer’s
recommendations.
The wall mounted remote controller shall be shipped inside the carton and packaged with the
indoor unit and shall be able to withstand 105°F storage temperatures and 95% relative
humidity without adverse effect.
Part 2 – Warranty
2.1 The units shall have a manufacturer’s parts and defects warranty for a period one (1) year
from date of installation. The compressor shall have a warranty of 6 years from date of
Page 77 of 82 Ductless Mini-splits – Hyper Heat PL Rev 1
installation. If, during this period, any part should fail to function properly due to defects in
workmanship or material, it shall be replaced or repaired at the discretion of the manufacturer.
2.2 This warranty does not include labor.
2.3 Manufacturer shall have over 25 years of continuous experience in the U.S. market.
Part 3 Performance
3.1 Each system shall perform in accordance to the ratings shown in the table below.
Cooling performance shall be based on 80°F DB, 67°F WB (26.7°C DB, 19.4°C WB) for the
indoor unit and 95°F DB, 75°F WB (35°C DB, 29.3°C WB) for the outdoor unit.
Heating performance shall be based on 70°F DB, 60°F WB (21.1°C DB, 15.6°C WB) for the
indoor unit and 47°F DB, 43°F WB (8.3°C DB, 6.1°C WB) for the outdoor unit.
3.2a Performance Table – 30,000 BTU/h Capacity System
Cooling
Heating
System Model
TPW
TPW
Capacity Capacity
SEER
Number
Cooling Heating
Btu/h
Btu/h
PLA-A30BA
18,000 – 18,000 –
2.450
3,440
15.6
30,000
32,000
HSPF
IV (V)
COP
CFM
(Hi/Dry)
8.8
(7.0)
2.73
740
HSPF
IV (V)
COP
CFM
(Hi/Dry)
9.4
(7.3)
3.45
1060
TPW = Total Power Watts
3.3a Hyper Heat Performance Table - 30,000 BTU/h Capacity System
Hyper Heat Performance
Heating
TPW
HSPF COP
At Outdoor DB
Capacity Heating
IV
Btu/h
Heating at 17°F (-8.3°C)
32,000
5,720
5.6
1.64
Heating at 5°F (-15°C)
32,000
6,630
4.8
1.41
Heating at -4°F (-20°C)
26,400
6,192
4.3
1.25
Heating at -13°F (-25°C)
24,000
6,295
3.8
1.12
3.2b Performance Table – 36,000 BTU/h Capacity System
Cooling
Heating
System Model
TPW
TPW
Capacity Capacity
SEER
Number
Cooling Heating
Btu/h
Btu/h
PLA-A36BA
18,000 – 18,000 –
3,120
3,230
16.0
36,000
38,000
TPW = Total Power Watts
3.3b Hyper Heat Performance Table - 36,000 BTU/h Capacity System
Hyper Heat Performance
Heating
TPW
HSPF COP
At Outdoor DB
Capacity Heating
IV
Btu/h
Heating at 17°F (-8.3°C)
38,000
5,300
7.1
2.10
Heating at 5°F (-15°C)
38,000
5,860
6.4
1.90
Heating at -4°F (-20°C)
34,200
5,828
5.9
1.72
Heating at -13°F (-25°C)
30,400
5,921
5.1
1.50
Page 78 of 82 Ductless Mini-splits – Hyper Heat PL Rev 1
Part 4 - Design
4.1 Indoor Unit
4.1.1 Cabinet
The indoor unit cabinet shall be a space-saving ceiling-recessed cassette type. The cabinet shall
be formed from galvanized sheet metal coated with high-density foam insulation.
The indoor unit shall be factory assembled, wired and tested. Contained within the unit shall be
all factory wiring and internal piping, control circuit board, fan, and fan motor. Single branch
ducting shall be allowed from cabinet. The cabinet panel shall have provisions for a field
installed filtered outside air intake.
A separate grille assembly shall be attached to the front of the cabinet to provide supply air
vanes in four directions and a center mounted return air section. The four-way grille shall be
fixed to bottom of cabinet allowing two, three or four-way blow. The grille vane angles shall be
individually adjustable from the wired remote controller to customize the airflow pattern for the
conditioned space. Grill assembly color shall be Munsell 6.9Y 8.9/0.4.
The unit, in conjunction with the wired, wall-mounted controller shall have a self-diagnostic
function, 3-minute time delay mechanism, and an auto restart function. Indoor unit and integral
refrigerant pipes shall be purged with dry nitrogen and caped before shipment from the factory.
4.2 Fan
The indoor fan shall be an assembly with a turbo fan propeller, direct driven by a single motor
and shall be statically and dynamically balanced to run on a motor with permanently lubricated
bearings.
The indoor fan shall consist of five (5) speed settings, Low, Mid1, Mid2, High and Auto. The
fan shall have a selectable Auto fan setting that will adjust the fan speed based on the difference
between controller set-point and space temperature.
4.3 Vane
The indoor unit shall have an adjustable air outlet system offering 4-way airflow, 3-way airflow,
or 2-way airflow with switches that can be set to provide optimum airflow based on ceiling
height and number of outlets used.
The indoor unit vanes shall have 5 fixed positions and a swing feature that shall be capable of
automatically swinging the vanes up and down for uniform air distribution. Each vane shall be
equipped for individual position selection controlled from the wall controller
The vanes shall have an Auto-Wave selectable option in the heating mode that shall randomly
cycle the vanes up and down to evenly heat the space.
If specified, the grille shall have an optional i-see sensor that will measure room temperature
variations and adjust the airflow accordingly to evenly condition the space.
4.4 Filter
Return air shall be filtered by means of an easily removable, long life, washable, pleated filter.
4.5 Coil
The indoor unit coil shall be of nonferrous construction with pre-coated aluminum strake fins
on copper tubing. The tubing shall have inner grooves for high efficiency heat exchange.
The heat exchanger shall have a modified fin shape that reduces air resistance for a smoother,
quieter airflow. All tube joints shall be brazed with PhosCopper or silver alloy. The coils shall
be pressure tested at the factory.
A condensate pan with drain connections shall be provided under the coil. The unit shall also
include a built-in, automatic condensate lift mechanism that will be able to raise drain water 33
inches (84 cm) above the condensate pan. The lift mechanism shall be equipped with a positive
acting liquid level sensor to shut down the indoor unit if liquid level in the drain pan reaches
maximum level.
Page 79 of 82 Ductless Mini-splits – Hyper Heat PL Rev 1
Both refrigerant lines between the indoor unit and outdoor unit shall be fully insulated.
4.6 Electrical
The electrical power of the unit shall be 208 / 230 volts, 1-phase, 60 hertz.
The system shall be capable of satisfactory operation within voltage limits of 198 volts to 253
volts.
The indoor unit shall be provided with A-Control – a system allowing the indoor unit to be
powered and controlled directly from the outdoor unit using a 14 gauge (AWG) 3-wire
connection plus ground providing both primary power and integrated , by-directional, digital
control signal without additional connections.
The indoor units shall not have any supplemental or “back-up” electrical heating elements
Part 5 Control
5.1 The control system shall consist of two (2) microprocessors, one in each indoor and
outdoor unit, interconnected by A-Control. This three (3) conductor 14 ga. AWG wire with
ground method shall provide power feed and bi-directional digital control transmission
between the outdoor and indoor units.
5.2 The system shall be capable of automatic restart when power is restored after power
interruption. The system shall have self-diagnostics ability, including total hours of compressor
run time. Diagnostics codes for indoor and outdoor units shall be displayed on the wired
controller display panel.
5.3 The microprocessor located in the indoor unit shall have the capability of monitoring return
air temperature and indoor coil temperature, receiving and processing commands from the
wired controller, providing emergency operation and for controlling the operation of the
outdoor unit.
5.4 The indoor unit shall be connected to a deluxe wall mounted wired controller, model
PAR-21MAA, to perform input functions necessary to operate the system. The wired
controller shall have a large multi-language DOT matrix, liquid crystal display (LCD)
presenting contents in eight (8) different languages, including English, French, Chinese,
German, Japanese, Spanish, Russian, and Italian.
5.5 There shall be a built-in weekly timer with up to eight pattern settings per day. The
controller shall consist of an On/Off button, Increase/Decrease Set Temperature buttons, a
Heat / Auto / Cool / Dry / Fan mode selector, a Timer Menu button, a Timer On/Off button, Set
Time buttons, a Fan Speed selector, a Vane Position selector, with a Vane Swing setting, a Test
Run button, and a Check Mode button. The controller shall have a built-in temperature sensor.
Temperature shall be displayed in either Fahrenheit (°F) or Celsius (°C). Temperature changes
shall be by increments of 1°F (1°C) with a range of 67°F to 87°F (19°C to 30°C).
5.6 The wired controller shall display operating conditions such as set temperature, room
temperature, pipe temperatures (i.e. liquid, discharge, indoor and outdoor), compressor
operating conditions (including running current, frequency, input voltage, On/Off status and
operating time), LEV opening pulses, sub cooling and discharge super heat.
5.8 The controller shall have the capability of controlling up to a maximum of sixteen indoor
units. All units will be in the same mode, with the same set point, fan speed, and all functions.
5.9 Controller shall operate over a maximum developed control cable distance of 1,650 feet
(500 meters).
5.10 The control voltage from the wired controller to the indoor unit shall be a digital +/-24
volts, DC signal. The control signal between the indoor and outdoor unit shall be pulse signal
24 volts DC. Up to two wired controllers shall be able to be used to control one unit.
Page 80 of 82 Ductless Mini-splits – Hyper Heat PL Rev 1
5.11 Control system shall control the continued operation of the air sweep louvers, as well as
provide On/Off and mode switching. The controller shall have the capability to provide
sequential starting with up to fifty seconds delay.
5.12 A two wire (one pair) twisted, stranded, 18 gauge (AWG), jacketed, control cable shall be
used to connect the controller to the indoor unit.
Part 6 - Outdoor Units
6.1 The outdoor units shall be compatible with the two different types of indoor units (PKA wall mounted and PLA - four way ceiling cassette). The connected indoor unit must be of the
same capacity as the outdoor unit except that the Model PUZ-HA36NHA shall have the option
to connect to two indoor units – 18,000 BTU/h capacity (PKA-A18GA or PLA-A18BA type)
each, installed within the same confined space, to improve air distribution (total capacity shall
be equivalent to outdoor unit).
6.11The outdoor unit shall be equipped with a control board that interfaces with the indoor unit
to perform all necessary operation functions.
6.12The outdoor unit shall be able to operate with a maximum height difference of 100 feet (30
meters) between indoor and outdoor units. Units shall also have a maximum refrigerant
tubing length capability of 254 feet (75 meters) between indoor and outdoor units without
the need for line size changes, traps or additional oil. Units shall be pre-charged for a
maximum of 100 feet (30 meters) of refrigerant tubing. The outdoor unit shall be
completely factory assembled, piped, and wired. Each unit must be test run at the factory.
Both refrigerant lines from the outdoor unit to indoor units shall be individually insulated.
6.13The outdoor unit shall have an Heat Interchanger circuit consisting of:
6.13.1 A heat interchanger circuit for sub-cooling liquid prior to entering the outdoor coil
during the heating mode. The interchanger shall be of a copper tube within a tube
construction.
6.13.2 The interchanger circuit refrigerant flow shall be controlled by an electronic expansion
valve.
6.14The outdoor unit shall be capable of operating in cooling mode at 0°F (-18°C) ambient
temperature without additional low ambient controls (optional wind baffles – two pieces are required).
6.15The outdoor unit shall have rated performance for heat operation at -13F outdoor ambient
temperature without additional low ambient controls
6.16Outdoor unit shall have a sound rating no higher than 53 dB(A).
6.17The outdoor unit shall have an accumulator with refrigerant level sensors and controls.
6.18The outdoor unit shall have a high pressure safety protection, over-current protection and
DC bus protection.
6.19 Cabinet
6.19.1 The casing shall be constructed from galvanized steel plate, coated with a finished with
an electrostatic ally applied, thermally fused acrylic or polyester powder coating for
corrosion protection and have a Munsell 3Y 7.8/1.1 finish. The fan grille shall be of
ABS plastic.
6.19.2 Fan
Model PUZ-HA30NHA and Model PUZ-HA36NHA shall be furnished with two (2) AC fan
motors. The fan motors shall be of aerodynamic design for quiet operation, and the fan motor
bearings shall be permanently lubricated. The outdoor unit shall have horizontal discharge
airflow. The fan shall be mounted in front of the outdoor coil, pulling air across the coil from
Page 81 of 82 Ductless Mini-splits – Hyper Heat PL Rev 1
the rear and dispelling it through the front. The fan shall be provided with a raised guard to
prevent contact with moving parts.
6.10.3 Coil
The L shaped condenser coil shall be of copper tubing with flat aluminum fins to reduce debris
build up. The coil shall be protected with an integral metal guard. Refrigerant flow from the
condenser shall be controlled by means of an electronic linear expansion valve (LEV) metering
device. The LEV shall be controlled by a microprocessor activated stepper device.
6.10.4 Compressor
The compressor shall be a Mitsubishi Electric, DC scroll compressor with Variable Compressor
Speed Inverter Technology. The compressor shall be driven by inverter circuit to control
compressor speed. The compressor speed shall dynamically vary capacity to match the zone
load for significantly increasing the efficiency of the system which will result in considerable
energy savings. To prevent liquid from accumulating in the compressor during the off cycle, a
minimal amount of current shall be intermittently applied to the compressor motor windings to
maintain enough heat to evaporate the liquid. The compressor shall be mounted to avoid the
transmission of vibration. .
6.10.5 The outdoor unit shall be equipped with a properly sized refrigerant accumulator and
high pressure safety switch.
6.11 Electrical
The electrical power of the unit shall be 208 / 230 volts, 1-phase, 60 hertz. The unit shall be
capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The outdoor
unit shall be controlled by the microprocessor located in the indoor unit.
The control signal between the indoor unit and the outdoor unit shall be pulse signal +/- 24 volts
DC. The unit shall have Pulse Amplitude Modulation circuit to utilize 98% of input power
supply.
Mr. Slim PL 30/36 P-Series Hyper-heat Guide Specification ©Nov 2008 Mitsubishi Electric / HVAC
Page 82 of 82 Ductless Mini-splits – Hyper Heat PL Rev 1