Installation
Instruction
PF1MNB
Direct Expansion Fan Coil Units
Sizes 018m071
NOTE:
Read the entire
This symbol
instruction
-_ indicates
manual
a change
from
be_bre starting
the installation.
the last publication.
SAFETY
hnproper
installation,
adjustment,
alteration,
cause personal injury or property
The qualified installer or agency
packaged
(NEC)
when
CONSIDERATIONS
maintenance,
damage. Consult a qualified
must use _actory-authorized
with the kits or accessories
Follow all safety
these instructions
service,
or use can cause explosion,
fire, electrical
which may
installing.
codes. Wear safety glasses and work gloves. Use quenching cloth for brazing
thoroughly
and follow all warnings or cautions attached to the unit. Consult
for special
shock, or other conditions
installer, service agency, or your distributor
or branch for information
or assistance.
kits or accessories
when modifying
this product. Refer to the individual
instructions
operations.
Have fire extinguisher
local building codes and National
available.
Electrical
Read
Code
requirements.
Recognize safety information.
This is the safety-alert
to the potential
for personal injury.
symbol
Understand
and CAUTION.
the signal word, DANGER,
WARNING,
Z_ • When you see this symbol
These words
on the unit and in instructions
are used with the safety-alert
symbol.
or manuals,
DANGER
be alert
identifies
the
most serious hazards which will result in severe personal il_iury or death. WARNING
signifies hazards which could result in personal injury or
death. CAUTION
is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used
to highlight
suggestions
Z_
WARNING:
switch.
Turn off
which
Before
accessory
will result
installing
heater
in enhanced
installation,
or servicing
unit,
power if applicable.
reliability,
or operation.
always turn
Electrical
off all power to unit. There
shock
can cause personal
may be more than
injury or death.
'1 disconnect
INTRODUCTION
Model
PF1MNB
Fan Coil Units
----) These units are designed
are designed
for flexibility
to meet the low air leak requirements
and can be used
cun'ently
pan and drain connection
area and when brazing tubing. These
nominal cooling capacities.
(See Fig. 2 and 3.) Factory-authorized,
Product
Data for available
accessory
for upflow,
in effect.
Because
horizontal,
or downflow
applications.
of this, the units need special
attention
in the condensate
units are available
for application
in systems of 18,000 through 60,000 Btuh
field-installed
electric heater packages are available in 3 through 30 kw. See
kits.
--> HEATER
PACKAGES
This unit may or may not be equipped with an electric heater package. For units not equipped with _actory installed heat, a _actory-approved,
field
installed UL listed heater package is available from your equipment
supplier. See unit rating plate lbr a list of factory approved heaters. Heaters
that are not factory approved could cause damage which would not be covered
heater package, minimum circuit ampacity (MCA) and maximum
fuse/breaker
heater.
The difference
is not an error
and is clue to calculation
difference
under the equipment wan'anty. If fan coil contains a factory installed
may be different than units with a same size field installed accessory
per UL guidelines.
INSTALLATION
---> PROCEDURE
I--CHECK
Unpack
unit
Inspect
equipment
plate
and move
which
Unit
can stand
to final location.
for damage
prior
proper
installation
contains
PROCEDURE
EQUIPMENT
Remove
carton
to installation.
2--MOUNT
UNIT
o1" lie on floor,
or hang
taking
care not to damage
File claim with shipping
information.
Check
from ceiling
o1"walh
rating
Allow
company
unit.
if shipment
plate to be sure unit matches
space
for wiring,
piping,
is damaged
job
or incomplete.
Locate
unit rating
specifications.
and selwicing
unit.
IMPORTANT:
When unit is installed over a finished ceiling and/or living area, building codes may require a field-supplied
secondary condensate
pan to be installed under entire unit. Some localities may allow as an alternative,
the running of a separate, secondary
condensate
line. Consult
local codes
A.
Upflow
for additional
restrictions
or precantions.
Installation
If return air is to be ducted
unit, and floor.
through
Side return
on slope coil models.
Form:
is a field
option
IM-PF1M-04
a floor,
Cancels:
set unit on floor
Cut opening
IM-PF1M-03
over opening
and use 1/8- to 1/4-m. thick fireproof
per dimensions.
(See Fig.
Printed in U.S.A.
1.) A field-supplied
1-03
resilient
bottom
gasket
closure
Catalog No.
between
is required.
53PF-1M5
duct,
POWER
ENTRY
--_
OPTIONS
_
_
IELD SUPPLIED
SUPPLYDUCT
OWVOLOPTIONS
018-060
21-1N.
FRONT
SERVICE
07024-1N. CLEARANCE
UNIT
A
0!8/024
12 In.
030/036
17 In.
042
!9 In.
UPFLOW/_
2°w
FIELD MODIFIED
PRIMA_
A
SIDE RETURN
LOCATION FOR
UNITS ONLY
SLOPE COIL
UPFLOW/DOWNFLOW
SECONDARY DRAIN II
UPFLOW/DOWN FLOW _/
PRIMARY DRAIN
FIELD SUPPLIED
RETURN PLENUM
A00069
Fig. l--Slope
B.
Coil Unit in Upflow Application
Downflow Installation
---->NOTE: To convert units for downflow applications, refer to Installation Instructions supplied with kit for proper installation. For slope fan coils,
use kit Part No. KFADC0201SLP. For A fan coils use kit Part No. KFADC0401ACL. Use fireproof resilient gasket, 1/8- to 1/4-in. thick, between
duct, unit, and floor.
NOTE: Gasket kit number KFAHD0101SLP
is also required Ibr all downflow applications to maintain low air lea_low
sweat performance.
--_ _
CAUTION: The conversion of the fan coil to downflow requires special procedures for the condensate drains on both
A-coil and Slope units.
The vertical drains have an overflow hole between the primary and secondary drain holes. This hole is plugged for all
applications except downflow, but must be used for downflow.
During the conversion process, remove the plastic cap covering the vertical drains only and discard. Remove the plug from
the overflow hole and discard. At completion of the downflow installation, caulk around the vertical pan fitting to door joint
to retain the low air leak performance of the unit.
C.
Horizontal
Installation
Units must not be installed with access panels facing up or down. Units are factory built for horizontal left installation (See Fig. 2 and 6.) When
suspending unit from ceiling, dimples in casing indicate suitable location of screws for mounting metal support straps. (See Fig. 2.)
slightly
CAUTION: To ensure proper drainage for horizontal installations, unit must be installed level with its long direction or
raised at the return air inlet 1/4-in., and pitched slightly towards condensate drain, 1/4-in. to 1/2-in.
NOTE:
Modular units (sizes 070, 071) can be disassembled
and components
moved separately
accommodates
small scuttle holes and limiting entrances
to installation
sites. (See Fig. 3.)
HORIZONTAL
NOTE:
RIGHT
Gasket
CONVERSION
kit number
i. Remove
blower
2. Remove
coil mounting
3. Remove
coil assembly.
4. Lay
KFAHD010ISLP
and coil access
coil to casing
flange
SLOPE
coil assembly
coil mounting
slope coil conversion
to maintain
low air leak/low
(See Fig. 4.)
to right-side
coil assembly
area for reassembly.
This process
COILS
1"o1"horizontal
and fitting panel.
side and reinstall
using
WITH
is required
panels
screw securing
fan coil unit on its right
5. Attach
OF UNITS
to installation
casing
flange.
with condensate
screw previously
removed.
2
pan down.
(See Fig. 4.)
sweat
pertbrmance.
!RIMARY
FIELD _
SUPPLIED
HANGING
_
DRAIN
,
DRAIN
STRAPS
018-060 21-IN.
070 24-1N.
FRONT SERVICE
CLEARANCE
(FULL FACE
[ OF UNIT)
UNIT
LOW VO LT
ENTRY
OPTIONS
" ccgss
o
SECONDARY
DRAIN
POWER
ENTRY
OPTIONS
A00070
Fig. 2--Slope
Coil Unit in Horizontal
Left Application
BLOWER BOX
----7
I
2 SCREWS
EWS
_!
E
BRACKET
2 SCREWS
COIL BOX
A95293
Fig, 3--Removal
of Brackets on Modular Unit
COIL MOUNTING
BLOWER
ASSEMBLY
COIL
SUPPORT
RAIL
SLOPE COIL
SKI
•PRIMARY DRAIN
CONNECTIONS
SECONDARY
DRAIN
A03001
-e Fig. 4--Conversion
for Horizontal Right Applications
Using a Slope Coil
SEAL
CONNECTIONS
HORIZONTAL
RIGHT
APPLICATION
SUPPORT
RAIL
BRACKET
DRAIN
SUPPORT
BRACKET
COIL_
SUPPORT
RAIL
BRACKET
DRAIN PAN
HORIZONTAL
SECONDARY
HORIZONTAL
RIGHT
DRAIN
RIGHT
A00071
Fig. 5--Conversion
for
sure the pan cap in the fitting door is properly
----)
6. Make
---)
7. Add gaskets
8. Align
Make
holes with
sure liquid
HORIZONTAL
from
kit KFAHD
tubing
and suction
RIGHT
i. Remove
blower
metal
connections
and condensate
robe grommets
are in place
and coil access
3. Remove
2 snap-in
clip securing
Using A-Coil
the low air leak rating
of the unit.
per kit instructions.
CONVERSION
2. Remove
Horizontal
Right Applications
seated on the fitting door to retain
OF UNITS
panels.
fitting
clips securing
pan connections,
to prevent
WITH
A-COIL
(See Fig. 5.)
panel to condensate
A-coil
and reinstall
air leaks and cabinet
pan.
Remove
in unit.
4
fitting panel.
access
panels
sweating.
and fitting
Install
after
panel.
brazing.
FACTORY SHIPPED
HORIZONTAL LEFT
APPLICATION
COIL
COIL
SUPPORT
RAIL
DRAIN PAN
SUPPORT
BRACKET
COIL
HORIZONTAL
DRAIN PAN
PRIMARY DRAIN
HORIZONTAL LEFT
AIR SEAL \
ASSEMBLY___
SECONDARY DRAIN
HORIZONTAL LEFT
REFRIGERANT
CONNECTIONS
A00072
Fig. 6---A-Coil
4. Slide coil and pan assembly
5. Remove
horizontal
6. Convert
air-seal
&ain
air-seal
b. Remove
air splitter
c. Remove
d. Install
filler plate
e. Remove
f. Install
7. Install
---)
troughs
2 snap-in
horizontal
12. Remove
2 oval coil access
condensate
access
Make
sure liquid
Connect
supply-air
Use flexible
material
insulated
and fitting
panel
3--AIR
type of duct used,
Ductwork
(B) in place
right
on coil support
rail on right side of unit.
(See Fig. 5
_actory-shipped
inset.)
of filler plate.
application.
on opposite
tube sheets.
panel
on each corner
and secure
of vertical
coil assembly
side of coil access
plugs
and reinstall
pan engages
panels,
and vertical
aligning
holes
condensate
tube grommets
coil support
in unit. Be sure clip with large
rails.
of£set is used on right side of unit
panel.
panel.
into holes
sure no insulation
on left side of coil access
interferes
with tubing
with seating
connections
panel
and fitting panel.
sure that the cap snaps
and seats cleanly
on the
of the cap.
and condensate
pan connections.
Be sure to reinstall
metal
clip
pan.
are in place
to prevent
air leaks
and cabinet
sweating.
DUCTS
duct over outside
of the 3 4-in. flanges
between
joint.
ductwork
If return-air
with 20-30kw
Acoustical
electric
provided
flanges
and unit to prevent
for flexible connector
between
ductwork
and covered with vapor barrier.
Units equipped
3 screws.
the left side of the coil door and fitting
on right
and seal duct-to-unit
connectors
(See Fig. 5.)
pan fitting caps (fi'om Step 10) in the right side of the coil door making
and suction
PROCEDURE
position
caps from
knockouts
side of the coil door. Make
fitting
4 screws.
by removing
Be sure coil bracket
clips to correctly
pan.
insulation
between
air splitter
in horizontal
(C) and install
into casing.
two oval fitting
14. Reinstall
rail on left side of unit and reinstall
spout.
11. Remove
back
A.
(A) and install
i0. Remove
13. Install
Ready)
pan on right side of coil assembly.
8. Slide coil assembly
9. Reinstall
to secure
(Factory
right
from coil by removing
(A) as shown
onto plastic
horizontal
from coil support
(B) from coil seal assembly
condensate
hose
bracket
for horizontal
assembly
filler plate
Left Application
out of unit.
pan support
assembly
a. Remove
in Horizontal
heaters
and unit
require
on supply-air
are required,
transmission
at discharge
a 1-in. clearance
opening.
install
of vibration.
connection.
to combustible
Secure
duct to flange,
factory-authorized
When
accessory
electric
heater
through
using proper
fasteners
for the
kit.
is installed,
Ductwork
passing
materials
for the first 36 in. of supply
use heat-resistant
unconditioned
space
must
be
duct.
Treatment
Metal duct systems that do not have a 90 ° elbow and 10 ft of main duct to first branch takeoff may require internal acoustical
insulation
lining.
As an alternative,
fibrous ductwork
may be used if constructed
and installed in accordance
with the latest edition of SMACNA
construction
standard on fibrous glass ducts. Both acoustical
UL Standard
181 for Class 1 air ducts.
lining
and fibrous
ductwork
5
shall comply
with National
Fire Protection
Association
as tested by
PROCEDURE
NOTE:
A.
4--ELECTRICAL
See B for electrical
Sizes
CONNECTIONS
connection
018 Through
of size 071.
070
All products fi'om the factory utilize a printed-circuit
board (PCB) which
selection terminal (SPT), and time delay relay (TDR) jumper. To disable
When
a _actory-approved
connections
accessory
heater
to be sure none were
package
loosened
has been installed,
in transit
Z_
CAUTION:
If a disconnect
switch
electrical
or refrigerant
components.
or installation.
has a low-voltage
the TDR feature,
check all factory
See unit rating
is to be mounted
The unit nmst have a separate
the unit.
On units with a factory
control package.
branch
installed
electric
disconnect
Z_
WARNING:
Field wires on the
is removed.
Service
and maintenance
the
unit)
is turned
LINE-VOLTAGE
off.
an electric
fi'om unit wiring harness.
For units without electric
Connect
208/230v
2. Connect
with pull-out
i.
removed,
where
and inspect
factory
wiring
packages.
drill
or fastener
will
not contact
fi'equency, phase, and ampacity are as specified on unit rating
all electrical connections
in accordance
with the NEC and any
disconnect
service
a location
diagram
heater
tap
switch located
and maintenance
within
sight from and readily
can be safely
performed
accessible
fi'om
on only the load side of
line side of the disconnect
found in the fan coil unit remain
live, even when the pull-out
to incoming
wiring can not be performed
until the main disconnect
switch
(remote
to
to do so will
ground
heater,
remove
(See Electric
heat:
result
power
and discard
Heater
in electrical
CONTROL
power
Installation
leads fi'om field disconnect
wire to unit
ground
shock
causing
personal
injury
or death.
plug (if equipped)
from fan coil and connect
male plug from heater
to female plug
Instructions.).
to yellow
and black
stripped
leads.
lug.
NOTE:
Units installed without electric heat should
air leakage and formation of exterior condensation.
24-V
with a field-supplied
per unit wiring
speed
CONNECTIONS
If unit contains
i.
Failure
circuit
wiring
plate for approved
on the unit, select
Before proceeding
with electrical connections,
make certain that supply voltage,
plate. See unit wiring label for proper field high- and low-voltage
wiring. Make
local codes or ordinances
that may apply. Use copper wire only.
circuit protective
fuse (5 amp), fan motor
cut the JWl jumper wire. (See Fig. 7.)
have a field-supplied
sheet metal
bloek-offplate
covering
the heater opening.
This will reduce
SYSTEM
Connection
To Unit
Wire low voltage in accordance
with wiring label on blower. (See Fig. 8, 9, 10, ll, and 12.) Use No. 18 AWG
color-coded,
insulated
(35°(; minimum)
wire to make the low-voltage
connections
between
the thermostat,
the unit, and the outdoor
equipment.
If thermostat
is located more than 100 ft from unit (as measured
along the low-voltage
wire), use No. 16 AWG color-coded,
insulated (35°C minimum) wire. All wiring nmst be NEC (?lass 1 and must be separated
wiring instructions
for any additional
wiring procedure
recommendations.
2. Transformer
terminal
3. Heater
Inlbrmation
on transformer
Staging
The
Transformer
and connect
controls
are
is _actory
wired
for 230-v
it to the 208-v
terminal.
factory-circuited
for
operation.
For 208-v
per thermostat
applications,
power
leads. Refer
disconnect
to outdoor
black wire
unit
fi'om 230-v
(See Fig. 13.)
single-stage
operation.
For
KHAOT0301FST,
and for 3-stage use both kits KHAOT0201SEC
and KHAOT0301FST.
nut, strip and reconnect per the thermostat
kit instruction.
(See Fig. 11.) When 3 stages
Strip W2, W3, and E and reconnect
fi'om incoming
kit instructions.
2-stage
operation,
use
outdoor
thermostat
kit
When 2 stages are desired, cut W3 at the W2 wire
are desired, cut the W2 wire nut off and discard.
(See Fig. 12.)
C8
-_
Fig. 7--Fan
Coil Printed-Circuit
6
Board
A03010
FAN COIL
'CONTROL'
THERMOSTAT
FAN COIL
'CONTROL'
THERMOSTAT
_R
_zZL__
G
[]
W3
W3
E
E
AIR COND.
AIR COND.
A94058
Fig,
8--Wiring
Layout
(Cooling
Air Conditioning
Only)
FAN COIL
(CONTROL)
THERMOSTAT
A94059
Unit
Fig.
HEAT PUMP
(CONTROL
g--wiring
Layout
(Cooling
and
Air Conditioning
l-Stage
Neat)
Unit
FAN COIL
(CONTROL)
THERMOSTAT
HEAT PUMP
CONTROL
R
R
_G
R
_G
[]-
C
C
W3
[]
[]
[]
[]
E___
W2
C3_o
z;_=¥
W2
W30DTS
O
4q_
[Z]--A94060
Fig, 10--Wiring
Layout
and 2-Stage Heat with
(Cooling
Heat Pump
No Outdoor
Y
A94061
Unit
Thermostat)
(Cooling
Fig. 11--Wiring
and 2-Stage
Layout Heat Pump
Heat with 1 Outdoor
Unit
Thermostat)
z_
CAUTION: If W2, W3, and E on any 3 stage heater (18, 20, 24, or 30kw), are individually connected as with outdoor
thermostats or any other situation, emergency heat relay must be used. This relay is in kit KHAOT0201SEC and is normally
used with kit KHAOT0301FST for a 2 outdoor thermostat system.
NOTE: When
KHAOT0201SEC
GROUND
-->
3 stages are used
must be used.
or anytime
the E terminal
is not
tied to W2,
the
emergency
heat
relay,
part
of outdoor
themlostat
kit
CONNECTIONS
z_ WARNING:
According
to NEC, ANSI/NFPA 70, and local codes, the cabinet must have an uninterrupted or unbroken
ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal
conduit when installed in accordance with existing electrical codes. If conduit conection uses reducing washers, a separate
ground wire must be used. (See Ground/Conduit Note below.) Failure to follow this warning could result in electric shock,
fire, or death.
NOTE:
Use UL-listed
accomplished
MINIMUM
conduit
and conduit
connector
by using
grounding
lugs provided
CFM AND
MOTOR
SPEED
Units with 02"without electric
mininmm
fan speed indicated.
Fan speed selection
replace with motor
heaters
for connecting
in control
supply
wire(s)
to unit to obtain
proper
grounding.
Grounding
may also be
box.
SELECTION
require
a mininmm
CFM.
Refer
to unit wiring
label
to ensure
that fan speed
selected
is done at fan relay on printed-circuit
board. To change motor speeds, disconnect
_an lead used on relay
speed tap desired. (See Fig. 14.) Save insulating
cap and place on motor lead removed
from relay.
7
is not lower
terminal
(SPT)
than
and
FAN COIL
'CONTROL'
TH ERMOSTAT
[2>
RED
HEAT PUMP
(CONTROL
R
R
G
[]-
c
C
BLU ODTS!
[]
[]-
W2
]
[]
[]
O
Y
EMERGENCY
HEAT RELAY
A94062
Fig. 12--Wiring
Layout
Heat
Pump
Unit (Cooling
and 2-Stage
Heat with 2 Outdoor
Thermostats)
YEL
BLK
PRIMARY
A94067
NOTE:
In low static
Sizes 018 through
applications,
lower
036 have 2 motor
speed taps. Sizes 042 through
unit applications.
Medium speed (blue)
systems of straight matched systems.
B.
Size 071
LINE-VOLTAGE
Units with
adapter
heaters
kit for fused models
all factory
z_
WARNING:
disconnect
is designed
for straight
070 have 3 motor
matched
of water
being blown
oft" coil.
speed taps. Low speed (red) is designed
operations.
High
speed
(black)
is used
for mismatch
with high
external
outdoor
static
duct
CONNECTIONS
15- and 20-kw
Check
motor
Fie. 13--Transformer
Connections
speed'tap
should be used to reduce possibility
wiring
switch.
are factory
per unit wiring
Before
Turn
wired
for dual-circuit
operation.
When
single-circuit
operation
is required,
install
_actory-authorized
only.
diagram
installing
off accessory
and inspect
or servicing
heater
factory
system,
power
wiring
always
if applicable.
connections
turn
off
to be sure none were
all
Electrical
power
shock
to system.
can
cause
z_
CAUTION:
If a disconnect
switch
is to be mounted
on the unit, select a location
where
electrial
or refrigerant
components.
Electrical
shock
can cause personal
injury or death.
8
loosened
There
personal
drill
in transit
may
be
injury
or fastener
will
or installation.
more
than
or death.
not contact
1
PCB
FAN
SINGLE
INSULATING
CAP(2)
MOTOR
SPEED
TAPLEADS
2 OR3
SPEED
TAP
TERMINAL
WRAPPER
J
COMMON
YELLOW
FANDECK
A94068
Fig. 14--Fan
NOTE:
Before proceeding
with electrical connections,
Be sure that electrical service provided by the utility
See unit wiring
label for proper
field high-
CoilFan
Relay
and
Speed
CONTROL
SYSTEM
and low-voltage
CONNECTIONS
Terminal
make certain that supply voltage, fi'equency, and phase are as specified
is sufficient to handle the additional
load imposed by this equipment.
wiring.
Make
all electrical
or ordinances
that may apply. Use copper wire only. The unit must have a separate
located within sight f_com, and readily accessible
from the unit.
24-V
Tap
TO UNIT
PRINTED-CIRCUIT
connections
branch
electric
BOARD
in accordance
circuit
with NEC
on unit rating plate.
and any local codes
with a field-supplied
disconnect
switch
(PCB)
Refer to unit wiring instructions
for recommended
wiring procedures.
Use No. 18 AWG color-coded,
insulated (35°C mininmm)
wires to make
low-voltage
connections
between thermostat
and unit. If themmstat
is located more than 100 ft from unit (as measured
along the low-voltage
wires), use No. 16 AWG color-coded,
insulated (35°C minimum) wires. PCB is circuited for single-stage
heater operation. When
staging is desired using 2-stage or outdoor thermostats,
see applicable
outdoor unit instructions.
Remove Jnmper J2 on PCB.
1. The
5-, 8-, and 10-kw heaters
2. The 9- and 15-kw heaters
3. The
low-voltage
NOTE:
Where
nmst be NEC
leads
Class
Transfomler
them
require
1 and must
The secondary
is factory
wired
to the 208-v
circuit
heaters
to thermostat
local codes
A _actory-authorized
disconnect
are installed, the circuit breaker
connect
are adaptable
18-, 20-, 24- and 30-kw
Connect
are single
for 2-stage
and outdoor
be separated
wiring
from
operation.
for up to 3-stage
unit.
for 230-v
operation.
(See Fig.
of the transformer
operation.
(See Fig. 15.)
be routed
incoming
kit is available for installation
can be used as a disconnect.
terminal.
heater
stage only.
are adaptable
thermostat
additional
For 208-v
through
power
conduit
or raceways,
splices
can be made inside
of 0- through
10-kw applications.
applications,
disconnect
black
When electric
wires
from 230-v
13.)
is protected
by a 5-amp
tan coil unit. All wiring
leads.
fuse mounted
9
on the printed-circuit
board.
heat packages
terminal
with circuit
breakers
on the transformer
and
Thermostat
Subbase
07! UNIT
Outdoor
Terminal
BIock
Circuit
Board
rq
m
DFq
El-DE_13--
D
--t-q
A97011
Fig. 15--Single-Speed
GROUND
Heat
Pump
z_x WARNING:
The cabinet must have an uninterrupted
or unbroken
codes to minimize
personal
injury
if an electrical
fault should occur.
conduit
ground
shock,
when installed
in accordance
with existing
wire must be used. (See Ground/Conduit
fire,
NOTE: Use
accomplished
ground
electrical
codes. If conduit
connection
uses
Note below.)
Failure
to follow
this warning
tubing
package
TUBING
or field-supplied
tubing
of refrigerant
flow-control
grade.
device.
have sweat
Cut tubing
2. Insert
suction
and liquid
to correct
tube into sweat
robe connections.
CAUTION:
suction
tube
evacuate
must
sets are being
tube connection
be insulated.
Do not use damaged,
coil and field-supplied
tubing
to 500 microns
brazed to the unit connections
dirty,
or
before
to prevent
first.
length.
connection
on unit until
3. Braze connection
using silver bearing
Consult local code requirements.
--_ Z_
Make
Suction
ALWAYS
--_ Z_
CAUTION: A brazing shield MUST be used when tubing
damage to the unit surface and condensate pan fitting caps.
i.
reducing
washers,
a separate
could
result
in an electrical
on unit and heaters.
5--REFRIGERANT
contaminated
robing because it may plug rel}igerant
opening outdoor unit sel_'ice valves.
Units
70 and local
wire or metal
UL listed conduit and conduit connector to connect supply wire(s) to unit and obtain proper grounding.
Grounding
may also be
by using grounding
lug provided in control box. Use of dual or muhiple supply circuits will require grounding
of each circuit to
lugs provided
accessory
ground according
to NEC, ANSI/NFPA
The ground
may consist of electrical
or death.
PROCEDURE
Use
Wiring
CONNECTIONS
it bottoms.
or non-silver
bearing
Wrap a wet cloth around rear of fitting
brazing
materials.
Do not use solder
(materials
to prevent damage to TXV and factory-made
which
melt
below
800°F).
joints.
4. Evacuate coil and tubing system to 500 microns using deep vacuum method.
PROCEDURE
6--REFRIGERANT
FLOW-CONTROL DEVICE
Z_X CAUTION:
compressor
start
If using a TXV
capacitor
and
Replace piston if required.
plate. If it does not match,
(071 size factory
installed)
relay are required.
Consult
in conjunction
outdoor
unit
with a single-phase
reciprocating
pre-sale
literature
for start assist
Check piston size shown on indoor unit rating plate to see if it matches required
replace indoor piston with piston shipped with outdoor unit. The piston shipped
approved indoor coil combination.
i/2 turn. Do not exceed 30 ft-lbs.
(See Fig. 16.) When
changing
piston,
use a back-up
10
wrench.
Hand tighten
compressor,
a
part number.
kit
piston shown on outdoor unit rating
with outdoor unit is con'ect for any
hex nut, then tighten
with wrench
PROCEDURE
7--CONDENSATE
DRAINS
--_ z_
CAUTION: The conversion of the fan coil to downflow requires special procedures
A-coil and Slope units.
The vertical drains have an overflow hole between the primary and secondary
drain
applications except downflow, but must be used for downflow.
During the conversion process, remove the plastic cap covering the vertical drains only
the overflow hole and discard. At completion of the downflow installation, caulk around
to retain the low air leak performance of the unit.
To connect
drains the cap openings
must be removed.
disk. Clean the edge of the opening
the low leak rating of the unit.
Units are equipped
To prevent property
if necessary
Use
a knife
to start the opening
and install the condensate
CAUTION:
Shallow, running
NOTE:
When
primary
and secondary
connecting
condensate
condensate
holes. This hole is plugged for all
and discard. Remove the plug from
the vertical pan fitting to door joint
near the tab and using
caulk around
pliers,
the lines where
with primary and secondary
3/4 in. FPT &ain connections.
For proper condensate
damage and achieve optimum &ainage performance,
BOTH primary and secondary
properly-sized
condensate
traps. (See Fig. 17 and 19.) Factory-approved
plastic condensate
pan. Do not over-tighten.
Finger-tighten
plus i-i/2
z_x
line. Finally
for the condensate drains on both
pull the tab to remove
they exit the fitting
the
to retain
line installation
see Fig. 1, 2, 4, 5, and 6.
&ain lines should be installed and include
traps are available. It is recommended
turns. Use pipe dope.
that PVC fittings
be used
on the
traps are inadequate and DO NOT allow proper condensate drainage. (See Fig. 18.)
&ain
lines, avoid blocking
filter access
panel,
thus preventing
filter removal.
After
connection,
prime both
traps.
NOTE:
If unit is located in or above a living space where damage may result from condensate
overflow,
a field-supplied,
exterual condensate
pan should be installed underueath
entire unit, and a secondary
condensate
line (with appropriate
trap) should be run from unit into pan. Any
condensate
in this exterual condensate
pan should be drained to a noticeable place. As an alternative to using an exterual condensate
localities may allow the use of a separate 3/4 in. condensate
line (with appropriate
trap) to a place where condensate
will be noticeable.
of the structure must be informed
damage will occur.
Install traps
in condensate
that when condensate
flows fi'om the secondary
lines as close to coil as possible.
(See Fig. 19.) Make
&ain or external
sure that outlet
condensate
pan, unit reqnires
of each trap is below
its connection
pan to prevent condensate
from overflowing
the &ain pan. Prime all traps, test for leaks, and insulate traps if located
Condensate
drain lines should be pitched downward
at a mininmm
slope of 1 in. for every i0 ft of length.
Consult
local codes
PROCEDURE
A.
for additional
restrictions
servicing
above
pan, some
The owner
or water
to condensate
a living
area.
or precautions.
8--ACCESSORIES
Electric Heaters
See unit rating plate for factory approved electric heater kits. Follow installation instructions provided with kit.
B. Electronic Air Cleaner
SIZES
0"18--070
The Electronic
because
Air Cleaner
it uses the 230-v
may be connected
fan coil power
to fan coil as shown
in Fig. 20. This method
requires
a field supplied
240vi120v
supply.
i-
IE&NDISTR' OTOR
_-- PISTON
RETAINER
BRASS
HEX BODY
STRAINER
A94415
Fig. 16--Refrigerant
Flow-Control Device
(071 Size Has TXV and Strainer)
11
40va transformer
UNIT
t
2" MIN
DO NOT USE SHALLOW RUNNING TRAPS!
A03013
A03002
--_ Fig. 17--Recommended
Condensate
Trap
-_
Fig. 18--Insufficient
Condensate
Trap
CONTROL
BOARD
OVAC
"If'
FAN RELAY
SPT
ACCESS
PANEL
T
C
C
TO
ii
I
2o8,23OVAC
COM
MOTOR
(USE FACTORY KIT OR
FIELD-SUPPLIED
TRAP OF
SUFFICIENT
DEPTH.
STANDARD
P-TRAPS ARE
NOT SUFFICIENT. SEE
FIGURE OF RECOMMENDED
CONDENSATE
TRAP)
OM
I
TRANSFORMER
BLOWER
TRAP REQUIRE_X_
C
NONC
, CONVERSIONK,T,
I
SECONDARY
DRAIN WiTH
APPROPRIATE
TRAP REQUIRED
(USE FACTORY KIT OR
FIELD-SUPPLIED
TRAP)
PRIMARY
R G
;
;'
[
2?gg
TO EAC
FROM MOLEX
PLUG AND
TRANSFORMER
(IN UNIT)
A03011
--_ Fig. 20--Wiring
Layout of Electronic
Fan Coil -- Sizes 018--070
A03003
-_ Fig. 19--Condensate
SIZE
Drain
Air
Cleaner
to
071
Because the ECM blower motor used in the 071 size fan coil is controlled
by low-voltage
signals, a switched 230vac electronic air cleaner power
signal is not available.
This signal is replaced by a 24vac signal which is provided at PCB terminals AUX 1 and AUX2 (See Fig. 21 .) This signal
is present whenever the G thermostat
with an electric air cleaner, use field
signal is present (heat pump
supplied 24vac relay.
heating,
cooling
and continuous
blower
modes).
When
the fan coil is installed
The EAC relay kit consists of a 24vac relay which mounts directly on the PCB bracket inside the fan coil using facto W punched screw holes, 2
mounting
screws, 2 pre-temlinated
wires for connection
of the relay coil to the AUX1 and AUX2 terminals,
2 No. 16 AWG stripped leads for
connection
of the relay contacts for control of power to the EAC, wire nuts, and wiring instructions.
(See Fig. 22.)
If the EAC relay
NOTE:
When
is field
supplied,
use field supplied
the 071 size is installed
G output with a call for heat is required
to "on" is recommended.
C.
with an air conditioner
for air cleaning
terminations
and wire per the EAC
and the electric
or humidification
heat is the primary
during heating
mode.
wiring
schematic.
heating
device,
A themmstat
(See Fig. 23.)
a thermostat
which
turns on the
with the _an-on with W option
set
Humidifier
SIZES
018--070
Connect
SIZE
wiring,
humidifier
and humidistat
to fan coil unit as shown
in Fig. 24 and 25. The cooling
lockout
relay
is optional.
(See Fig. 24.)
071
Terminals
HUM1 and HUM2 are provided for direct connection
to the low-voltage
control of a humidifier
through a standard humidistat.
These
terminals
are energized with 24-vac when G thermostat
signal is present. (See Fig. 27.) Alternately,
the 24vac signal may be sourced from the W
and C terminal block connections.
12
LOW VOLTAGE TERMINAL
PRINTED
BLOCK
CIRCUIT BOARD --___
A
z
W/
MOLEX 12-PIN CONNECTOR
A95275
Fig. 21--Detail
EASY SELECT
of PFIMNB071
Printed-Circuit
Board
_
FAN COIL
AUX1 AUX2
(C)
(G)
r'_J
230VAC OR
115 VAC BRANCH CKT
GND HOTNEUT
cl _
_
WriT
TO EAC
J
A95277
Fig.
22--PCB
Mounted
with
Wiring
Cleaner
Relay
and
Accessory
Air
A98625
Fig. 23--EAC
13
Relay Wiring
Schematic
FAN COIL
CONTROL)
THERMOSTAT
HEAT PUMP
CONTROL
gS._ R
_G
FAN COIL
CONTROL
THERMOSTAT
_--c
_-_R
W3
[]
[]
%:
G
,E
,
W2
O
I
[]
i
_
I
I
_
I ........
_
I
I
i
C:5 y
I
L
--I
C
I
m
FAN HUMIDIFIE
:I / BL55_ W3
AIR COND.
I I
_1 ..........
i
7
RELAY
I
_,',
I
'
m
L____I
I I
--
-11
I
11
[]
,
,
I
L--4
I
......
FAN HUM_
H_AT
A95295
A95294
Fig. 24--Wiring
Layout
of Humidifier
F_
Fig.
25--Wiring
Layout
to Heat Pump
of Humidifier
Electric
Heat
to
Fan
Coil
with
SPDT
24VAC COIL
230VAC 15A
CES0130003
FAN RELAY
G
C
1TO!
I
HUMIDISTAT
HUM 1
(c)
DEHUMIDISTAT
(OPENS ON RISE)
SPEED
MOTOR
SPEED
MOTOR
TO HUMIDIFIER
24-VAC
HUM 2
(G)
HUMIDIFIER
WIRING
A95296
PROCEDURE
Fig. 26--Latent
9--SEQUENCE
A.
Fan Coil Sequence
018-070
CONTINUOUS
Thermostat
Fig. 27--Humidifier
of Operation
R to G. G energizes
energizes
Pan relay
on PCB which
R to G, R to Y, and R to O (heat pump
Thermostat
energizes R to G and R to Y. G energizes
there is a 90 sec delay before Pan relay opens.
PUMP
HEATING
WITH
AUXILIARY
only).
circuit
G is de-energized
there
to indoor blower
motor.
When
G is de-energized,
there is a 90
Pan relay on PCB which completes
circuit
to indoor
blower
motor.
opens.
Pan relay on PCB which completes
ELECTRIC
is a 90 sec delay before
G energizes
tim relay
circuit
to indoor blower
motor.
When
G is de-energized,
HEAT
Thermostat
energizes R to G, R to Y, and R to W. G energizes
electric heat relay(s) which completes circuit to heater element(s).
When
completes
opens.
When G is de-energized,
there is a 90 sec delay before
HEAT PUMP HEATING
MODE
HEAT
Wiring
FAN
closes
sec delay before relay
COOLING
MODE
Thermostat
A95317
Capacity
Control
OF OPERATION
Pan relay
fan relay on PCB which
When W is de-energized,
opens.
14
completes
circuit to indoor blower motor. W energizes
electric heat relay(s) opens turning off heater elements.
ELECTRIC
HEAT
OR EMERGENCY
HEAT
Thermostat
closes R to W. W energizes
nonnally
closed contacts
on fan relay.
de-energized
B.
after heater
PF1MNB071
closes
COOLING
MODE
Thermostat
closes
HEAT
R to Y/Y2,
HEATING
circuit
of Operation
closes
fan airflow.
single-speed
02"W2. Fan coil delivers
electric
cooling
airflow.
MODE
the selected
heat airflow.
MODE
circuit
R to Y/Y2,
HEATING
closes
runs at continuous
R to O, and R to G. Fan coil delivers
R to W_W1,
HEATING
PUMP
Thermostat
opens.
R to G. The blower
circuits
HEAT
PUMP
HEAT
circuit
closes
Thermostat
motor is energized
through
elements.
Blower motor is
FAN
Thermostat
Thermostat
electric heat relay(s) which completes
circuit to heater element(s).
Blower
When W is de-energized,
electric heat relay(s)
opens turning off heater
Fan Coil Sequence
CONTINUOUS
ELECTRIC
relay(s)
MODE
WITH
circuits
and R to G. Fan coil delivers
AUXILIARY
R to Y_Y2 and.or
ELECTRIC
single-speed
heat pump
heating
airflow.
HEAT
R to Y1 with R to W_W1 or W2 (and R to O in the case of defrost).
In the event that electric
heating
is called for by thermostat while heat pump is also operating in either heating or defrost mode, the motor will modify its airflow output, if necessary,
to provide an airflow which is defined as sate for operation
of electric heater during heat pump operation.
That airflow is the greater of the heat
pump
heating
airflow
Refer
to outdoor
and the electric
heater
only airflow.
START-UP
unit
PROCEDURE
Installation
1--EASY
Instructions
SELECT
for system
CONFIGURATION
The EASY SELECT
taps are used by the installer
pre-programmed
table of airflows. Airflows
are based
inputs
such as the need
for de-humidification.
The fan coil nmst be configured
(see infonnation
A.
printed
AUXILIARY
Installer
nmst
HEAT
select
properly
board
label located
KW/CFM
the auxiliary
--
heat
instructions
TAPS
(SIZE
and refrigerant
charging
method
details.
071 ONLY)
to configure
a system.
on system size or mode
The ECM uses the selected taps to modify its operation
to a
of operation
and those airflows are modified
in response to other
(See Fig. 21.)
to operate
on circuit
start-up
Select
with system
heater
airflow
components
next to select pins),
range
approved
with which
move
for size
of electric
for application
it is installed.
the 6 select
To successfully
wires to the pins which
heater
with kw size heater
a basic
system
match the components
configure
used.
installed
installed.
skipped. Each select pin is marked with a range of heaters for which airflow, also marked, is approved.
kw range matching the heater size, for example,
0-10 for 10-kw heater. This airflow must be greater
If no heater
is installed,
this step can be
For increased comfort select the nan'owest
than the minimum
CFM for electric heater
application
with the size system installed for safe and continuous
operation.
(See Tables 1 and 2 for airflow delivery and minimum
CFM.) Note
that airflow marked is the airflow which will be supplied in emergency
heat mode and heating mode on air conditioners
when electric heat is the
primary heating source. In heat pump heating mode when
and electric heater airflow to ensure safe heater operation.
B.
AC/HP
SIZE --
The _actory
setting
Select
system
for air conditioner
electric heaters are energized, the ECM will run the higher of heat pump heating airflow
The factory selection is the largest heater range approved. (See Fig. 21, A as indicated.)
size installed
02"heat pump
size is the largest
unit meant
for application
with the model
needs to select the air conditioner
or heat pump size to ensure that airflow delivered falls within proper range
to all operational
modes with the exception
of electric heat modes. (See Fig. 21, B as indicated.)
C.
SYSTEM
TYPE
The type of system
1. AC
--
Select
nmst
CFMiton
The factory
Provides
cooling
setting
AC/HP
To provide
airflow
airflow
AC or HP
approximately
315 CFMiton
for good humidity
Efficiency
provides
for higher
normal
heating
air delivery
temperature.
same airflow
for heating
and cooling
modes
to increase
--
Select
at the rates described
Medium,
above,
Low,
approximately
350
overall
HP efficiency;
approximately
the ACHP
or High airflow
ADJUST
select
is factory
set to the nominal
individual
DELAY
operation
--
installation
Select
delay profiles
needs
desired
for such things
time
are provided
delay
(nom)
tap. The adjust
selections
as noise,
comfort,
and humidity
removal.
options
(See Fig. 21, D as indicated.)
profile
to customize
and enhance
system
operation.
(See Fig. 21, E as indicated)
----) NOTE:
The ON/OFF time delay profiles are active only in heat pump only heating and cooling modes.
In auxiliary heat modes, there is a zero on delay and a one minute off delay programmed
into the motor
Selection
Provides
removal.
HILO
airflow supplied for all operational
modes, except non-heat pump heating modes. HI provides 15 percent airflow over nominal unit
and LO provides
10 percent airflow below nominal unit size selected. The adjust selection options are provided to adjust airflow
to meet
ON/OFF
Four motor
This applies
is AC. (See Fig. 21, (7 as indicated.)
CFM ADJUST
will regulate
size selected
E.
installed
The installer
be selected:
3. HP-EFF
Heat Pump
350 CFMiton.
supplied
type
coil purchased.
Air conditioner
2. HP-COMFORT
D.
system
of_an
lbr the size unit installed.
are:
15
that cannot
be oven'idden.
i. Thestandard
90secoffdelay
(Factory
setting)
at100percent
airflow.
2. No delay
option
used
for servicing
unit
3. A 30 sec on delay with no airflow/90
to heat-up/cool-down
4. ENH,
enhanced
This profile
F.
selection,
CONTINUOUS
2. MED
factory
speed
move
3. HI speed
G.
setting,
move
LOW-VOLTAGE
connector
CIRCUIT
in heat pump
desired
fan
50% cooling
connector
at 100 percent
to perlbrm
airflow
a 30 sec on delay with no airflow/plus
cold blow
Select
is utilized
profile
delay
functions.
is used when it is desirable
to allow
system
coils time
with the airflow.
provides
FAN --
i. LO speed
sec off delay
in conjunction
will minimize
or when a thermostat
to MED,
mode
65%
AND
and could
when
thermostat
speed
150 sec at 70 percent
enhance
system
airflow/no
off delay for added
comfort.
efficiency.
is set on continuous
fan
airflow
cooling
of HI, 100% cooling
FUSING
operation
mode
mode
airflow
airflow.
(See Fig. 21, F as indicated.)
REFERENCE
The low-voltage
circuit is fused by a board mounted
5-amp automotive
fuse placed in series with the transformer
SEC2 and the R circuit. The C
circuit of the transformer
is referenced to chassis ground through a printed circuit run at SEC 1 connected
to metal standoff marked with ground
symbol.
EASY SELECT
BOARD TERMINAL
BLOCK
J1
D
.....
]
HUMIDISTAT
REMOVEJEl-
.....
JUMPER
J
A95316
Fig. 28--Humidistat
H.
De-Humidify
SIZES
018--070
(LATENT
CAPACITY
of latent
071 (HUMIDISTAT
capacity
cooling
CONTROL)
CONNECTION)
mode
airflow.
This reduction
its contacts. When contacts close, airflow
a standard humidistat.
(See Fig. 28.)
the field wiring
contacts opening
will increase
will returu
system
Consult
high performance
your
The ability
local
and minimize
dealer as to proper
to properly
perform
possible
frequency
maintenance
z_
must
service
CAUTION:
Never operate
unit without
be used when locating
the filter inside
a field-supplied
filter
must
be installed
cooling
it is essential
and availability
requires
recommended
until humidity
airflow.
terminals
its airflow
falls to a level which causes humidistat
To activate
this mode,
remove
certain
or required
that periodic
maintenance
of a maintenance
duct
Jnmper
to close
J1 and wire in
mechanical
skills
be performed
system.
16
on this equipment.
contract.
and tools. If you do not possess
is filter replacement
or cleaning
on a monthly
a filter. Damage
to blower motor or coil may result.
Factory
the unit. For those applications
where access
to an internal
in the return
for use of a standard
to approximately
80%
MAINTENANCE
failure,
of maintenance
on this equipment
your dealer for maintenance.
The only consumer
are available from your local dealer distributor.
AND
equipment
terminal block provides
connection
on increasing humidity and reduce
latent capacity
to 100% of selected
CARE
To continue
Mode
control.
If increased
latent capacity is an application
requirement,
humidistat.
The 071 size fan coil will detect the humidistat
of nominal
for De-Humidify
Mode
See Fig. 26 for wiring
SIZE
Wiring
these,
contact
basis. New filters
authorized
filter kits
filter is impractical,
Table I--PFIM
UNIT
FAN
SIZE
071
OUTDOOR
INIT
(APA(ITY
BTUH
ELECTRIC
LO
NOM
HI
LO
NOM
HI
LO
NOM
HI
LO
NOM
HI
36.000
1100
1100
1250
1350
1350
1350
*
*
*
*
*
*
42.000
1t40
1270
1460
1350
1350
1460
1525
1525
1525
*
*
*
48.000
1305
1450
1665
1350
1450
1665
1525
1525
1665
1750
1750
1750
1810
2085
1630
1810
2085
1630
1810
2085
1750
1810
2085
0
60.000
• Airflow
not
Airflow Delivery (CFM)
recommended
1630
for
heater/system
10
0
HEATER K'W I_NGE
15
0
20
0
30
size.
NOTE: LO, NOM, and HI refer to AC/HP CFM ADJUST selection.
Table
FAN
COIL
INIT
071
NOTES:
1 Heater Only--Air conditioner
2 These airflows are minimum
HEAT PUMP
UNIT
SIZE
2--PFIM
Minimum
CFM for Electric
Heater
Application
CF3I
HEATER
SIZEK_V
5
8. 9. 10
15
18. 20
24. 30
Heater Only
036
1050
1050
1050
1050
1750
1100
1100
1350
1350
042
1125
1125
1350
1350
048
1300
1300
1350
1465
1750
060
1625
1625
1625
1750
1750
with electric heater application
acceptable airflows as UL listed Actual airflow delivered
17
will be per airflow delivery
chart for Electric Heating
Modes.
18
19
© 2003 CAC/BDP
7310 W. Morris St, Indianapolis,
IN 46231
impflm04
20
Catalog
No. 53PF-1M5