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
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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
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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
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
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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
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)
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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
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
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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
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