ICP FEM4P Series User manual

These instructions must be read and understood completely before attempting installation.
DANGER, WARNING, CAUTION, and
NOTE
The signal words DANGER, WARNING,
CAUTION, and NOTE are used to identify levels of
hazard seriousness. The signal word DANGER is
only used on product labels to signify an immediate
hazard. The signal words WARNING, CAUTION,
and NOTE will be used on product labels and
throughout this manual and other manuals that may
apply to the product.
DANGER - Immediate hazards which will result in
severe personal injury or death.
WARNING - Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION - Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE - Used to highlight suggestions which will
result in enhanced installation, reliability, or
operation.
Safety Labeling and Signal Words
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
4& WARNING
The signal word CAUTION is used throughout this
manual in the following manner:
4& CAUTION
Signal Words on Product Labeling
Signal words are used in combination with colors
and/or pictures on product labels.
TABLE OF CONTENTS
Introduction .. 00... 2c. ee eee 2
Location 0.0.0... ee eee 2
Clearances and Dimensions ................055 3-4
Heater Packages .......... 0.0.0: c cece ee eee 5
Position Unit... 0.0... cee eee 5-9
Ait Ducts 2.0... ee 10
Electrical Connections ............ cee eee ee 10-14
Refrigerant Tubing ...........0 0.0.0 eee eee eee 15
Refrigerant Flow-Control Device ...............5 15
Condensate Drains ........ 0.0... cece eee ees 16
ACCESSOLICS 266. 17
Sequence of Operation......... 0... cece ee ees 18
Start-up Procedure 20... .. 0c cece eee ees 18
Care and Maintenance .............. eee 18
Airflow Performance ..............0.0e eevee 19-20
R-410A Quick Reference Guide................. 21
7 aa NS) te
PERSONAL INJURY, AND/OR PROPERTY DAM-
AGE HAZARD
Failure to carefully read and follow this warning
could result in equipment malfunction, property
damage, personal injury and/or death.
Installation or repairs made by unqualified per-
sons could result in equipment malfunction, prop-
erty damage, personal injury and/or death.
The information contained in this manual is in-
tended for use by a qualified service technician fa-
miliar with safety procedures and equipped with
the proper tools and test instruments.
Installation must conform with local building
codes and with the National Electrical Code
NFPA70 current edition.
496 01 5501 01 April 2011

INTRODUCTION
Models FEM4P, FSM4P, and FSU4P are for R-410A
refrigerant.
Models FEM4P and FSM4P are designed for maximum
flexibility and can be used for upflow, horizontal left or
right, and downflow applications (accessory kit required
for downflow).
Model FSU4P is designed for upflow installation, and can
be field modified for downflow applications (accessory kit
required).
LOCATION
FEM4P models are available for system sizes 1-1/2 - 4
tons (18,000 - 48,000 BTUH) nominal cooling capacity.
FEMA4P uses a refrigerant piston metering device with an
ECM integral electronically commutated motor for
efficiency.
FSM4P and FSU4P models are available for system
sizes 1-1/2 - 4 tons (18,000 - 48,000 BTUH) nominal
cooling capacity. FSM4P and FSU4P use a refrigerant
piston metering device with 2-speed PSC (permanent
split capacitor) motors.
All models require a field supplied air filter. Factory
approved electric heater packages are available in sizes
5kW through 30kW. See Product Specification literature
for available accessory kits
Select the best position which suits the installation site
conditions. The location should provide adequate
structural support, space in the front of the unit for service
access, clearance for return air and supply duct
connections, space for refrigerant piping connections and
condensate drain line connections. If heaters are being
installed make sure adequate clearance is maintained
from supply duct work. See Clearances in Figure 1 and
Figure 2.
If the unit is located in an area of high humidity, nuisance
sweating of casing may occur. On these installations a wrap
of 2” (51mm) fiberglass insulation with a vapor barrier is
recommended.
NOTE: Internal filter can be accessed from separate filter
door. If the filter can NOT be easily accessed, a remote
filter is recommended. Refer to ACCA Manual D for
remote filter sizing.
7 aN Le
FIRE HAZARD
Failure to maintain proper clearances could result in
personal injury, death, and/or property damage.
When heaters are installed, maintain clearances from
combustible materials as specified on unit rating
plate. Do not use plastic lined or combustible flexible
ducting within 36 inches of the supply end of the fan
coil.
496 01 5501 01

Figure 1 Clearances and Unit Dimensions - FEM4P
( OPENING)
( mane]
(SERVICE ACCESS)
38-11-82
Heaters
With
Heaters
Unit Size
1800
2400
3000
3600
4200
4800
42-11/16
42-11/16
49-5/8
49-5/8
49-5/8
49-5/8
14-5/16
14-5/16
17-5/8
17-5/8
21-1/8
21-1/8
12-7/16
12-7/16
15-3/4
15-3/4
19-1/4
19-1/4
12-5/8
12-5/8
15-5/8
15-5/8
19-1/8
19-1/8
22-1/16
22-1/16
22-1/16
22-1/16
22-1/16
22-1/16
19-13/16
19-13/16
19-13/16
19-13/16
19-13/16
19-13/16
496 01 5501 01

Figure 2 Clearances and Unit Dimensions —- FSM4P, FSU4P
( OPENING)
( mane]
(SERVICE ACCESS)
38-11-82
Heaters
With
Heaters
47-5/8
49-5/8
53-7/16
53-7/16
49-5/8
53-7/16
Unit Size
1800
2400
3000
3600
4200
4800
17-5/8
17-5/8
21-1/8
21-1/8
21-1/8
24-11/16
15-3/4
15-3/4
19-1/4
19-1/4
19-1/4
22-3/4
15-5/8
15-5/8
19-1/8
19-1/8
19-1/8
22-11/16
22-1/16
22-1/16
22-1/16
22-1/16
22-1/16
22-1/16
19-13/16
19-13/16
19-13/16
19-13/16
19-13/16
19-13/16
496 01 5501 01

HEATER PACKAGES
Factory approved, field installed, UL listed heater
packages are available from the equipment supplier. See
unit rating plate for a list of factory approved heaters.
POSITION UNIT
Unit can stand or lie on floor, or hang from ceiling or wall.
Allow space for wiring, piping, and servicing unit.
CAUTION
A
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in proper-
ty damage
A field fabricated auxiliary drain pan, with a sepa-
rate drain is REQUIRED for all installations over a
finished living space or in any area that may be
damaged by overflow from a restricted main drain
pan. In some localities, local codes require an aux-
iliary drain pan for ANY horizontal installation.
Heaters that are not factory approved could cause
damage which would not be covered under the
equipment warranty.
A. UPFLOW INSTALLATION
If return air is to be ducted through a floor, set unit on floor
over opening and use 1/8 to 1/4 inch thick (3 to 6 mm
thick) fireproof resilient gasket between duct, unit, and
floor.
Side return is a field option on slope coil models. Cut
opening per dimensions shown in Figure3. A
field-supplied bottom closure is required.
PRIMARY DRAIN
Figure 3 Upflow Installation
POWER ENTRY FIELD SUPPLIED
OPTIONS 1 SUPPLY DUCT
LOW VOLT
ENTRY
OPTIONS
FRONT SERVICE CLEARANCE ‘ SLOPE COIL UNITS
18 — 48 models = 21” (533 mm) — | °
60 model = 24” (610 mm) Na x
MODEL SIZE
18 12" (305mm)
‘A-COIL
UNITS 24 12" (305mm)
30 17" (432mm)
UPFLOW/DOWNFLOW~— " 7
SECONDARY DRAIN 1% 36 17" (432mm)
\ , |
UPFLOW/DOWNFLOW | Li Lor | caeomm)
PRIMARY DRAIN
° pH
NL “iI FIELD MODIFIED
| | A SIDERETURN
1 ow ou. LOCATION FOR
1 | 2 SLOPE COIL
(4mm) UNITS ONLY
UPFLOW/DOWNFLOW | J
SECONDARY DRAIN | 4 as
y
UPFLOW/DOWNFLOW Ps FIELD SUPPLIED
RETURN PLENUM
496 01 5501 01

B. DOWNFLOW INSTALLATION
A CAUTION
PRODUCT OR PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in product
or property damage
The conversion of the fan coil to downflow re-
quires special procedures for the condensate
drains on both A-coil and Slope-coil units. The
vertical drains have an overflow hole between the
primary and secondary drain holes. This hole is
plugged for all applications except downflow, and
must be used for downflow.
Failure to follow instructions could result in per-
sonal injury or product and property damage.
In this application, field conversion of the evaporator coil
is required using accessory Downflow Kit along with an
accessory Base Kit. Set unit on floor over opening and
use 1/8” to 1/4” thick fireproof resilient gasket between
duct, unit, and floor. Refer to installation instructions
packaged with accessory kit. See Product Specification
literature for kit part numbers.
During the conversion process, removed 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 low air leak
performance of the unit.
NOTE: Gasket kit number (EBACO1GSK) is also
required for all downflow applications to maintain low air
leak/low sweat performance.
C. HORIZONTAL INSTALLATION
Unit must NOT be installed with access panels facing up
or down. Access panels must only face to the side.
FEM4P and FSM4P models are factory built for
horizontal left installation (refer to Figure 4 and Figure 5).
They can be field converted to horizontal right (accessory
Gasket Kit required, see Product Specification literature
for part number). Refer to Figure 6 and Figure 7.
NOTE: When suspending unit from ceiling, dimples in
casing indicate suitable location of screws for mounting
metal support straps (refer to Figure 4).
NOTE: For optimum condensate drainage performance
in horizontal installations, unit should be leveled along its
length and width.
Figure 4 Slope Coil In Horizontal Left Application (FEM4P & FSM4P factory configuration)
A-COIL
HORIZONTAL LEFT
FIELD
SUPPLIED
HANGING
PRIMARY
STRAPS SECONDARY aye
FRONT SERVICE CLEARANCE
(FULL FACE OF UNIT)
SECONDARY 18 - 48 models = 21” (633mm)
DRAIN 60 model = 24” (610mm)
Sf
ES
LOW VOLT mT
ENTRY XY /
OPTIONS
y=
\
i
0
oO
@ 1%” (45mm)
@ SC) FILTER ACCESS
VN OCI CLEARANCE
Oo
\ 2 a
POWER = PRIMARY
ENTRY DRAIN
OPTIONS
496 01 5501 01

Figure 5 A-Coil in Horizontal Left Application (FEM4P & FSM4P factory configuration)
FACTORY SHIPPED
HORIZONTAL LEFT
APPLICATION
COIL
BRACKET
OK
Cahn
COIL
SUPPORT
RAIL
DRAIN PAN
SUPPORT
I a BRACKET
COIL
BRACKET
sorwonta.t
DRAIN PAN
AIR SEAL
ASSEMBLY
PRIMARY DRAIN
HORIZONTAL LEFT
SECONDARY DRAIN
HORIZONTAL LEFT
REFRIGERANT
CONNECTIONS
Horizontal Right Conversion of Units With Slope
Coils
1. Remove blower and coil access panel and fitting
panel (refer to Figure 6).
2. Remove coil mounting screw securing coil
assembly to right side casing flange.
3. Remove coil assembly.
4. Lay fan coil unit on its right side and reinstall coil
assembly with condensate pan down (refer to Figure 6).
Attach coil to casing flange using coil mounting
screw previously removed.
Align holes with tubing connections and
condensate pan connections, and reinstall access
panels and fitting panel. After brazing, make sure
liquid and suction tube grommets are in place to
prevent air leaks and cabinet sweating.
Figure 6 Conversion for Horizontal Right Applications - Slope Coil
COIL MOUNTING
BLOWER
“SCREW
|
ASSEMBLY
Ss
COIL
SUPPORT
RAIL
,
SS
SS
Ss
2)
NS
2
LQS\/H
SLOPE
COl
IS
Ox
DRAINPA
EFRIGERANT
PRIMARY
DRAIN
CONNECTIONS
SECONDARY
DRAIN
496 01 5501 01

Horizontal Right Conversion of Units With A-Coils d. Install filler plate (A) as shown in horizontal right
1. Remove blower and coil access panel and fitting application.
panel (refer to Figure 7). e, Remove condensate troughs (C) and install on
2. Remove coil mounting screw securing coil opposite tube sheets.
assembly to right side casing flange. f. Install hose onto plastic spout.
3. Remove coil assembly. 7. Install horizontal pan on right side of coil assembly.
4. Lay fan coil unit on its right side and reinstall coil 8. Slide coil assembly into casing. Be sure coil
assemby with condensate pan down (refer to bracket on each corner of vertical pan engages coil
igure 7). support rails.
5. Remove horizontal drain pan support bracket from 9. Reinstall 2 snap-in clips to correctly position and
coil support rail on left side of unit and reinstall on
coil support rail on right side of unit. secure coil assembly in unit. Be sure clip with large
offsets is used on right side of unit to secure
6. Convert air-seal assembly for horizontal right horizontal pan.
(refer to Figure 7). 10. Remove 2 oval coil access panel plugs and
a. Remove air-seal assembly from coil by removing reinstall into holes on left side of coil access panel
4 screws. and fitting panel.
b. Remove coil drip flanges from A-coil and reinstall 11. Remove insulation knockouts on right side of coil
on right side of coil (same side as horizontal drain access panel
pan). 12. Reinstall access fitting panels, aligning holes with
tubing connections and condensate pan
connections. Be sure to reinstall metal clip
between fitting panel and vertical condensate pan.
13. After brazing, make sure liquid and suction tube
grommets are in place to prevent air leaks and
cabinet sweating.
c. Remove filler plate (A) and install air splitter (B)
in place of filler plate.
Figure 7 Conversion for Horizontal Right Applications - A-Coil
REFRIGERANT AIR SEAL
CONNECTIONS \ \ ASSEMBLY
coi_—
support |X. ___
RAIL
COIL
BRACKET
DRAIN PAN
SUPPORT \Q
BRACKET .
COIL \
supronT N\I
RAIL
con—™”
BRACKET
HORIZONTAL
DRAIN PAN
PRIAMRY DRAIN
HORIZONTAL RIGHT
SECONDARY DRAIN
HORIZONTAL RIGHT
HORIZONTAL
RIGHT
APPLICATION
8 496 01 5501 01

D. MANUFACTURED HOUSING AND MOBILE HOME
APPLICATIONS
1.
2.
a.
Fan coil unit must be secured to the structure
using field—supplied hardware.
Allow a minimum of 24 inches (610mm) clearance
from access panels.
Recommended method of securing for typical
applications:
If fan coil is away from wall, attach pipe strap to
top of fan coil using No. 10 self tapping screws.
Angle strap down and away from back of fan coil,
remove all slack, and fasten to wall stud of
structure using 5/16” lag screws. Typical both
sides of fan coil.
If fan coil is against wall, secure fan coil to wall
stud using 1/8” (8mm) wide right-angle brackets.
Attach brackets to fan coil using No. 10 self
tapping screws and to wall stud using 5/16” lag
screws (refer to Figure 8).
NOTE: Modular units can be disassembled and
components moved separately to installation
area for reassembly. This process
accommodates small scuttle holes and limiting
entrances to installation sites (refer to Figure 9).
Figure 8
Mobile Home or Manufactured
Housing Applications
4” (102mm) MAX
aa SECURE FAN COIL TO STRUCTURE
UNIT AWAY FROM WALL
PIPE STRAP
° eo] (TYPICAL BOTH SIDES)
OR
UNIT AGAINST WALL
1/8” (8mm) INCH THICK ANGLE
MOUNTING BRACKET
(TYPICAL BOTH SIDES)
DOWN FLOW
BASE KIT
ww, SECURE UNIT TO FLOOR
y ANGLE BRACKET OR PIPE STRAP
4” (102mm) MAX
Figure 9
Removal of Brackets on
Modular Units
REAR CORNER
BRACKET
BLOWER BOX
2 SCREWS
496 01 5501 01

AIR DUCTS
Connect supply-air duct over the outside of %” flanges
provided on supply-air opening. Secure duct to flange
using proper fasteners for type of duct used, and seal
duct-to-unit joint.
Use flexible connectors between duct work and unit to
prevent transmission of vibration. When electric heater is
installed, use heat-resistant material for flexible
connector between duct work and unit at discharge
connection. Duct work passing through unconditioned
space must be insulated and covered with vapor barrier.
ELECTRICAL CONNECTIONS
Duct work Acoustical Treatment
Metal duct systems that do not have a 90 degree elbow
and 10 feet of main duct before first branch takeoff may
require internal acoustical insulation lining. As an
alternative, fibrous duct work may be used if constructed
and installed in accordance with the latest edition of
SMACNA construction standard on fibrous glass ducts.
Both acoustical lining and fibrous duct work shall comply
with National Fire Protection Association as tested by UL
Standard 181 for Class 1 air ducts.
FSM4P and FSU4P Fan Coil models utilize a printed
circuit board (PCB) which has a low voltage circuit
protective fuse (5 amp), fan motor speed tap terminal
(SPT), and time-delay relay (TDR). To disable the TDR
feature, snip the jumper wire JW1 (refer to Figure 10).
FEM4P Fan Coil models do not have a printed circuit board
(PCB), they have a low voltage circuit protective fuse (3
amp) inline on the wire harness. Speed selections are made
at the fan motor with the Blue wire. The motor is
preprogrammed with the time-delay circuit on some of the
speed taps. (See Section D)
Before proceeding with electrical connections, make certain
that supply voltage, frequency, phase, and circuit ampacity
are as specified on the unit rating plate. See unit wiring label
for proper field high and low voltage wiring.
7 aa NS) te
ELECTRICAL SHOCK or UNIT DAMAGE HAZARD
Failure to follow this warning could result in per-
sonal injury, death, and/or unit damage.
If a disconnect switch is to be mounted on unit, se-
lect a location where drill and fasteners will not
contact electrical or refrigeration components.
Make all electrical connections in accordance with the
NEC and any local codes or ordinances that may apply.
Use copper wire only. The unit must have a separate
branch electric circuit with a field-supplied disconnect
switch located within sight from and readily accessible
from the unit.
NOTE: When a pull-out type disconnect is removed from
the unit, only the Load side of the circuit is de-energized.
The Line side remains live until the main (remote)
disconnect is turned off.
7 aN Le
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in per-
sonal injury or death.
Turn off the main (remote) disconnect device be-
fore working on incoming (field) wiring .
Incoming (field) wires on the line side of the dis-
connect found in the fan coil unit remain live, even
when the pull-out is removed. Service and main-
tenance to incoming (field) wiring cannot be per-
formed until the main disconnect switch (remote
to the unit) is turned off.
Figure 10 Fan Coil Printed Circuit Board
10 496 01 5501 01

A. LINE VOLTAGE CONNECTIONS
Fan Coils installed without electric heat require the use of
a factory-authorized Power Plug Kit (accessory part
number EBACO1PLG). This kit provides the electrical
connections necessary to supply the unit with 208/230V
power when electric heat is not present. For units without
electric heat:
1. Connect 208/230V power leads from field
disconnect to yellow and black stripped leads on
Power Plug (accessory part number
EBACO01PLG).
2, Connect ground wire to unit ground lug.
3. When installing an electric heater, remove and
discard power plug (if equipped) from fan coil and
connect male plug from heater to female plug from
unit wiring harness. (See Electric Heater
Installation Instructions.)
B. 24V CONTROL SYSTEM
Connection to Unit
Wire low voltage in accordance with wiring label on the
blower (also refer to Figure 11 through Figure 16). Use 18
AWG color-coded, insulated (85 °C minimum) wire to
make the low-voltage connections between the
thermostat, the unit, and the outdoor equipment. If the
thermostat is located more than 100 feet from the unit (as
measured along the low voltage wire), use 16 AWG
color-coded, insulated (35 °C minimum) wire. All wiring
must be NEC Class 1 and must be separated from
incoming power leads. Refer to outdoor unit wiring
instructions for additional wiring recommendations.
Heater Staging
The controls are factory circuited for single-stage
operation (refer to Figure 12). When 2 stages are
desired, cut W3 at the W2 wire nut, strip, and reconnect
according to the thermostat kit instruction (refer to
Figure 14 - outdoor thermostat optional). When 3 stages
are desired, cut the W2 wire nut off and discard. Strip W2,
WS, and E, and reconnect according to the thermostat kit
instructions (refer to Figure 15 outdoor thermostats
optional).
A
CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution may result in
improper product operation.
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. If relay is not
used, blower may not operate when heaters are
energized.
Manufactured Housing
In manufactured housing applications, the Code of
Federal Regulations, Title 24, Chapter XX, Part 3280.714
requires that supplemental electric heat be locked out at
outdoor temperatures above 40°F (4°C), except for a
heat pump defrost cycle. Refer to Figure 16 for typical low
voltage wiring with outdoor thermostat.
496 01 5501 01 11

: Wiring Layout - Air Conditioning
Figure 11 : :
Unit (Cooling Only)
FAN COIL
THERMOSTAT (CONTROL)
rR RED |
GRY G
WHT W
WHT 2
BLU We
vio E
BRN c AIR COND.
a Ht es
PHA y
: Wiring Layout - Air Conditioning
Figure 12 Unit (Cooling and 1-Stage Heat)
FAN COIL
THERMOSTAT (CONTROL)
R
G
Ww
AIR COND.
Wiring Layout - Heat Pump Unit
Figure 14 (Cooling and 2-Stage Heat with
One Outdoor Thermostat)
FAN COIL
THERMOSTAT (CONTROL) HEAT PUMP
(CONTROL)
R R R
G
Wiring Layout - Heat Pump Unit
Figure 13 (Cooling and 2-Stage Heat with
No Outdoor Thermostat)
FAN COIL
THERMOSTAT (CONTROL) HEAT PUMP
(CONTROL)
R RED] a
R
G GRY G
BRN Cc
We
Ws
E
Wiring Layout - Heat Pump Unit
Figure 15 (Cooling and 2-Stage Heat with
Two Outdoor Thermostats)
FAN COIL
THERMOSTAT (CONTROL) HEAT PUMP
(CONTROL)
R R R
G G
C
Woe
W.
E
1 4 7/|C}]9 6 3
EMERGENCY HEAT RELAY
Wiring Layout - Heat Pump Unit
Figure 16 (Cooling and 2-Stage Heat for
Manufactured Housing)
THERMOSTAT FAN COIL HEAT PUMP
(CONTROL) (CONTROL)
R
12 496 01 5501 01

Transformer Information
Transformer is factory wired for 230V operation. For 208V
applications, disconnect the black wire from the 230V
terminal on transformer and connect it to the 208V terminal
(refer to Figure 17).
Transformer Connections Figure 17
C. GROUND CONNECTIONS
7 aN Le
ELECTRICAL SHOCK HAZARD
Failure to establish uninterrupted or unbroken
ground could result in personal injury and/or
death.
According to NEC, ANSI/NFPA 70, and local
codes, the cabinet must have an uninterrupted or
unbroken ground in order to minimize potential
for personal injury or death if an electrical fault
should occur. The ground may consist of electri-
cal wire or metal conduit when installed in accor-
dance with existing electrical codes. If conduit
connection uses reducing washers, a separate
ground wire must be used.
NOTE: Use UL listed conduit and conduit connectors for
connecting supply wire(s) to unit to obtain proper grounding.
Grounding may also be accomplished by using grounding
lugs provided in control box.
D. MINIMUM CFM AND MOTOR SPEED SELECTION
Units with or without electric heaters require a minimum
CFM. Refer to the unit wiring label to ensure that the fan
speed selected is not lower than the minimum fan speed
indicated.
FSM4P and FSU4P models: fan speed selection is done
at the fan relay printed circuit board. To change motor
speeds, disconnect fan lead used on relay terminal (SPT)
and replace with motor speed lead desired (refer to
Figure 19). Save insulating cap and place on motor lead
removed from relay.
NOTE: In low static applications, lower motor speed tap
should be used to reduce possibility of water being blown off
coil.
Units have 2 motor speed taps. Low speed (red) and high
speed (black). See Table 2 - FSM4P, FSU4P Airflow
Performance (CFM) for each setting.
FEM4P models: fan speed is selected at the motor
connector. Units with or without electric heaters require a
minimum CFM. Refer to the unit wiring label to ensure
that the fan speed selected is not lower than the minimum
fan speed indicated.
ONN |
90 sec off delay Tap 1 Low
Tap 2 Medium 90 sec off delay
Tap 3 High 90 sec off delay
Tap 4 Electric Heat tT | O sec off delay
Tap 5 Max + 0 sec off delay
T Electric heat airflow is same CFM as Tap 3, but with 0
sec off delay.
+ For high static applications, see Airflow Performance
Tables for max airflow.
To change motor speeds disconnect the BLUE fan lead
from motor connector terminal #2 (factory default
position) and move to desired speed-tap; 1, 2, 3, or 5.
Speed-taps 1, 2, and 3 have a 90 second blower off time
delay pre-programmed into the motor. Speed tap 4 is
used for electric heat only (with O second blower time
delay) and the WHITE wire should remain on tap 4.
Speed-tap 5 is used for high static applications, but has
a 0 second blower time delay pre-programmed into the
motor (see Airflow Performance Tables for actual CFM for
each tap). Also, see Figure 18 for motor speed selection
location.
NOTE: In low static applications, lower motor speed tap
should be used to reduce possibility of water being blown off
coil.
496 01 5501 01 13

Figure 18 FEM4P Motor Speed Selection
T
WU GwOOO!
L11S018
Figure
19
FSM4P
&
FSU4P
Fan
Coil
Relay
g
and
Speed
Tap
Terminal
FAN
RELAY
SINGLE SPADE
\\
MOTOR SPEED a
TAP LEADS
INSULATING CAP (2)
COMMON YELLOW
PCB .
SPEED TAP
TERMINAL
_*
WRAPPER
oN
FAN DECK
14 496 01 5501 01

REFRIGERANT TUBING
Refrigerant Tubing Connection and Evacuation
Use accessory tubing package or field-supplied tubing of
refrigerant grade. Suction tube must be insulated. Do not
use damaged, dirty, or contaminated tubing because it
may plug refrigerant flow-control device. ALWAYS
evacuate the coil and field-supplied tubing to 500
microns before opening outdoor unit service
valves.
4& CAUTION
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product or
property damage.
A brazing shield MUST be used when tubing sets are
being brazed to the unit connections to prevent damage
to the unit surface and condensate pan fitting caps.
Units have sweat suction and liquid tube connections.
Make suction tube connection first.
1. Cut tubing to correct length.
2. Insert tube into sweat connection on unit until it
bottoms.
3. Braze connection using silver bearing or non-silver
bearing brazing materials. Do not use solder
(materials which melt below 800°F / 427°C).
Consult local code requirements.
4. Evacuate coil and tubing system to 500 microns
using deep vacuum method.
4& CAUTION
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product or
property damage.
Wrap a wet cloth around rear of fitting to prevent
damage to piston assembly or TXV and factory-made
joints.
REFRIGERANT FLOW-CONTROL DEVICE
FEM4P, FSM4P, and FSU4P Models:
These units come equipped with a factory installed Piston
metering device with Teflon ring. If a piston replacement if
required, check piston size shown on indoor unit rating
plate to see if it matches required piston shown on
outdoor unit rating plate. If it does not match, replace
indoor piston with piston shipped with outdoor unit. The
piston shipped with outdoor unit is correct for any
approved indoor coil combination (See Figure 20).
When changing piston, use a back-up wrench. Hand
tighten hex nut, then tighten with wrench 1/2 turn. Do not
exceed 30 ft-lbs.The indoor piston contains a Teflon ring
(or seal) which is used to seat against the inside of
distributor body, and must be installed properly to ensure
proper seating in the direction for cooling operation.
A
CAUTION
PRODUCT OPERATION HAZARD
Failure to follow this caution may result in improper product
operation.
If using a TXV in conjunction with a single-phase reciprocat-
ing compressor, a compressor start capacitor and relay are
required. Consult outdoor unit pre-sale literature for start as-
sist kit part number.
Figure 20 Refrigerant Flow-Control Device
BRASS
HEX NUT
DISTRIBUTOR
TEFLON SEAL
TEFLON RING
& Elana
fe\/-=4
PISTON
ence
FLOW IN
COOLING
BRASS
HEX BODY
PISTON
RETAINER
aa STRAINER
Ci
496 01 5501 01 15

CONDENSATE DRAINS
Unit is provided with primary and secondary 3/4” (19mm)
NPT drain connections. Refer to Figure 3, Figure 4,
Figure 5, Figure 6, and Figure 7 to identify the primary
and secondary locations. To prevent property damage
and achieve optimum drainage performance, BOTH
primary and secondary drain lines should be installed and
include properly sized condensate traps (refer to
Figure 21). Factory approved condensate traps are
available (accessory part number EBACO1CTK).
To connect drainlines, the drain connection knock-outs
must be removed. Use a knife to start the opening near
the tab and using pliers, pull the tab to remove the
knock-out. Clean the edge of the opening if necessary.
After drain fittings are installed, caulk the seam between
the fitting and the cover to retain the low leak rating of the
unit.
It is recommended the PVC fittings be used on the plastic
condensate pan. Do not over-tighten. Finger-tighten
plus 1-1/2 turns. Use pipe dope, to ensure proper seal.
Install traps in the condensate lines as close to the coil as
possible (refer to Figure 23), but avoid blocking filter
access panel.
Install drain lines below the bottom of the drain pan and
pitch the drain lines down from the coil at least 1/4 inch per
foot of run (6mm per 0.3m). Horizontal runs over 15 feet
(5m) long must also have an anti-siphon air vents (stand
pipes), installed ahead of the horizontal runs. Extremely
long horizontal runs may require oversized drain lines to
eliminate air trapping.
Route primary drain line to the outside or to a floor drain.
Check local codes before connecting to a waste (Sewer)
line.
Route the secondary drain line to a place in compliance
with local installation codes where it will be noticed when
unit is operational. Condensate flowing from secondary
(overflow) drain indicates a plugged primary drain - unit
requires service or water damage will occur.
Prime all traps, test for leaks, and insulate drain lines
where sweating could cause water damage. Consult local
codes for additional requirements or precautions.
If a gravity drain cannot be used, install a condensate pump.
Install the pump as close to the indoor section as possible.
A CAUTION
PRODUCT or PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in product
or property damage.
Use only full size P-traps in the condensate line
(refer to Figure 21). Shallow, running traps are in-
adequate and DO NOT allow proper condensate
drainage (refer to Figure 22).
Figure 21 Recommended Condensate Trap
UNIT
2” MIN (51mm)
2” MIN (
Figure 22 Insufficient Condensate Trap
DO NOT USE SHALLOW RUNNING TRAPS!
Figure 23 Condensate Drain
FILTER
ACCESS
PANEL
SECONDARY DRAIN WITH
APPROPRIATE TRAP REQUIRED
(USE FACTORY KIT OR
\ FELD-SUPPLIED TRAP)
PRIMARY TRAP REQUIRED (USE FACTORY KIT OR
FIELD-SUPPLIED TRAP OF PROPER DEPTH.
STANDARD P-TRAPS ARE NOT SUFFICIENT. SEE
FIGURE OF RECOMMENDED CONDENSATE TRAP)
16 496 01 5501 01

ACCESSORIES
A. ELECTRONIC AIR CLEANER
The Electronic Air Cleaner may be connected to fan coils
as shown in Figure 24. This method requires a field
supplied transformer. See Electronic Air Cleaner
literature for kit requirements.
Fiqure 24 Wiring Layout of Electronic Air
g Cleaner to Fan Coil (FSM & FSU)
CONTROL BOARD
FAN RELAY RGTccc
230 vac NO NG | | | |
COM
a
WIRE SPT NO NC
208/230V COM
24VAC COM
CONVERSION KIT
To TRANSFORMER Load Lod
BLOWER
BLOWE! (vr) aaas
’ ' COM poses
TO EAC '
FROM MOLEX
PLUG AND
TRANSFORMER
(IN UNIT)
B. HUMIDIFIER
Connect humidifier and humidistat to fan coil unit as
shown in Figure 25 and Figure 26.
: Wiring Layout of Humidifier to
Figure 25 Heat Pump
FAN COIL
THERMOSTAT (CONTROL) HEAT PUMP
FAN HUMIDIFIER
—_
—_
115V
R
G
(CONTROL)
RED] 5 R
GRY|
BRN
uu
| |
HUMIDISTAT
Lt,
Fiqure 26 Wiring Layout of Humidifier to
g Fan Coil with Electric Heat
THERMOSTAT (CONTROL)
FI L\ RED |,
[5] LA\ ary |,
[<]
f
115V
f
Lgl
|
| W3
| l
E
| BRN! 4 AIR COND.
| |
| | c
|| L\ LAY
Pt
| | HUMIDISTAT
pb Lp
oof al,
496 01 5501 01 17

SEQUENCE OF OPERATIONS
A. CONTINUOUS FAN
Thermostat closes R to G. G energizes fan relay on PCB
(FSM4P, FSU4P) or sends signal direct to motor (FEM4P),
which completes circuit to indoor blower motor. When G is
de-energized, there is a 90 second off delay before relay
opens.
B. COOLING MODE
Thermostat energizes R to G, R to Y, and R to O (heat pump
only). G energizes fan relay on PCB (FSM4P, FSU4P) or
sends signal direct to motor (FEM4P), which completes
circuit to indoor blower motor. When G is de-energized,
there is a 90 second off delay before fan relay opens.
C. HEAT PUMP HEATING MODE
Thermostat energizes R to G and R to Y. G energizes fan
relay on PCB (FSM4P, FSU4P) or sends signal direct to
motor (FEM4P), which completes circuit to indoor blower
START-UP PROCEDURE
motor. When G is de-energized, there is a 90 second off
delay before fan relay opens.
D. HEAT PUMP HEATING WITH AUXILIARY
ELECTRIC HEAT
Thermostat energizes R to G, R to Y, and RtoW. G
energizes fan relay on PCB which completes circuit to
indoor blower motor. W energizes electric heat relay(s)
which completes circuit to heater element(s). When W is
de-energized, electric heat relay(s) open, turning off
heater elements. When G is de-energized there is a 90
second off delay before fan relay opens.
E. ELECTRIC HEAT OR EMERGENCY HEAT MODE
Thermostat closes R to W. W energizes electric heat
relay(s) which completes circuit to heater element(s).
Blower motor is energized through normally closed
contacts on fan relay. When W is de-energized, electric
heat relay(s) opens.
Refer to outdoor unit Installation Instructions for system
start-up instructions and refrigerant charging method
details.
CARE AND MAINTENANCE
The system should be regularly inspected by a qualified
service technician. Consult the servicing dealer for
recommended frequency.
Between visits, the only consumer service recommended
or required is air filter maintenance and condensate drain
operation.
Air Filter
Inspect air filters at least monthly and replace or clean as
required. Disposable type filters should be replaced.
Reusable type filters may be cleaned by soaking in mild
detergent and rinsing with cold water. Install filters with
the arrows on the side pointing in the direction of air flow.
Condensate Drain
During the cooling season check at least monthly for free
flow of drainage and clean if necessary.
A
CAUTION
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in poor
unit performance and/or product damage.
Never operate unit without a filter. Factory autho-
rized filter kits must be used when locating the fil-
ter inside the unit. For those applications where
access to an internal filter is impractical, a field-
supplied filter must be installed in the return duct
system.
18 496 01 5501 01

AIRFLOW PERFORMANCE TABLES
Table 1 - FEM4P Airflow Performance (CFM)
TOTAL STATIC (inches water column)
MODEL & SIZE BLOWER SPEED 0.40 050 0.60
Tap 5 669 620 565
Tap 4 534 486 436 398
FEM4P1800 Tap 3 616 581 537 499
Tap 2 614 569 534 486 436 398
Tap 1 614 569 534 486 436 398
Tap 5 892 835 763 676
Tap 4 826 795 766 743 706 660
FEM4P2400 Tap 3 826 795 766 743 706 660
Tap 2 701 660 616 581 537 499
Tap 1 617 592 552 507 472 420
Tap 5 1108 1090 1065 1034 1009 974
Tap 4 1026 1000 969 938 899 865
FEM4P3000 Tap 3 1026 1000 969 938 899 865
Tap 2 909 873 842 799 762 724
Tap 1 825 795 757 722 674 634
Tap 5 1301 1276 1245 1218 1176 1121
Tap 4 1227 1191 1169 1143 1105 1074
FEM4P3600 Tap 3 1227 1191 1169 1143 1105 1074
Tap 2 1087 1062 1030 1001 966 930
Tap 1 1026 1000 969 938 899 865
Tap 5 1560 1544 1507 1464 1424 1358
Tap 4 1419 1397 1358 1320 1279 1239
FEM4P4200 Tap 3 1419 1397 1358 1320 1279 1239
Tap 2 1249 1220 1184 1142 1093 1052
Tap 1 1242 1205 1158 1110 1069 1026
Tap 5 1743 1712 1679 1642 1610 1574
Tap 4 1669 1634 1599 1564 1531 1499
FEM4P4800 Tap 3 1669 1634 1599 1564 1531 1499
Tap 2 1452 1413 1377 1339 1308 1271
Tap 1 1300 1256 1221 1182 1142 1101
Table 2 - FSM4P and FSU4P Airflow Performance (CFM)
TOTAL STATIC (inches water column)
Mee & PRED 0.10 0.20 0.30 0.40 0.50 0.60
208V | 230V | 208V | 230V | 208V | 230V | 208V | 230V | 208V | 230V | 208V | 230V
FSM4P1800 High 568 | 648 | 466 | 526 | 403 | 434
FSU4P1800 Low 357 | 431 | 299 | 363 | A/a) 304
FSM4P2400 High 774 | 791 573 | 654 | 341 438
FSU4P2400 Low 868 | 684 | 740 | 506 | 573 | 341 | 418
FSM4P3000 High 1132 | 952 | 1005 | 704 | 791 | 459 | 482
FSU4P3000 Low 1019 | 805 | 902 | 575 | 637 | 396 | 447
FSM4P3600 High 1338 | 1135 | 1241 | 1043 | 1127 | 842 | 937
FSU4P3600 Low 1226 | 1052 | 1148 | 970 | 1048 | 697 | 855
FSM4P4200 High 1576 | 1435 | 1465 | 1309 | 1340 | 1144 | 1182
FSU4P4200 Low 1410 | 1237 | 1315 | 1137 | 1200 | 997 | 1047
FSM4P4800 High 1767 | 1593 | 1648 | 1472 | 1512 | 1303 | 1371
FSU4P4800 Low 1630 | 1479 | 1528 | 1370 | 1412 | 1218 | 1266
12) — airflow outside 450 cfm/ton.
NOTES:
1. Airflow based upon dry coil at 230v with factory-approved filter and electric heater (2 element heater sizes 1800 through 3600,
3 element heater sizes 4200 through 4800). For FEM4P models, airflow at 208 volts is approximately the same as 230 voits
because the ECM motor is a constant torque motor. The torque doesn’t drop off at the speeds the motor operates.
2. To avoid potential for condensate blowing out of drain pan prior to making drain trap:
Return static pressure must be less than 0.40 in. we.
Horizontal applications of 4200 - 4800 sizes must have supply static greater than 0.20 in. we.
8. Airflow above 400 cfm/ton on 4800 size could result in condensate blowing off coil or splashing out of drain pan.
496 01 5501 01 19

Table 3 - FEM4P Air Delivery Performance Correction Component Pressure Drop (in. we) at Indicated
Airflow (Dry to Wet Coil)
NIT SIZE CFM
UNIT'S 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 | 1300 | 1400 | 1500 | 1600 | 1700 | 1800 | 1900 | 2000
18 0.034 | 0.049 /0.063 | —— | —— | —— | —— | -= [| -= | -= 7 == | == P= f=
24 0.034 | 0.049 | 0.063 | 0.076 [0.089 | —— | —— | —— | —— | —— | -= | -= | -= f=
30 —— | —= | == [0.049 | 0.059 [0.070 |0.080 | —— | —— | —— | -= | == | -= | == ==
36 == | == | == | == | == |0.070 | 0.080 |0.090 | 0.099 | —— | —— | —— | -— | -= | ==
42 ==) == == f == | == | == | == [0.049 | 0.056 [0.063 | 0.070 | —— | —— | —— | -= 7 =
48 ==) = f= = = == | == | == [0.063 | 0.070 | 0.076 | 0.083 [0.090 | —— | ==
Table 4 - FSM4P and FSU4P Air Delivery Performance Correction Component Pressure Drop (in. wc) at
Indicated Airflow (Dry to Wet Coil)
UNIT SIZE CFM
500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 | 1300 | 1400 | 1500 | 1600 | 1700 | 1800 | 1900 | 2000
18 0.016 | 0.027 ]0.038 | —— | —— | —— | —— | —— | —— | -— | -= | == | == | == [== | ==
24 0.016 | 0.027 | 0.038 | 0.049 [0.059 | —— | —— | —— | —— | —— | —— | -= | == | =- [== | ==
30 == —— | —— | 0.036 | 0.046 | 0.055 | 0.064 | —— | —— | —— | —— | -— | —— | == | == | ==
36 == —— | —— | —— | —— | 0.055 | 0.064 | 0.073 | 0.081 | —— | —— | —— | —— | -— | -= | ==
42 == —— | —— | —= | —= | —= | —= [0.049] 0.056 | 0.063 |0.070 | —— | —— | —— | —-— | ——
48 == —— | -— | -= | —= | -= | —= | —= |] —= | 0.038 | 0.043 | 0.049 | 0.054 | 0.059 | —— | ——
Table 5 - FEM4P Electric Heater Static Pressure Drop (in. wc)
CFM
UNIT SIZE 400 600 800 1000 1200 1400 1600 1800 2000
18, 24 0.020 0.044 | 0.075 == == == == == ==
30, 36 == == 0.048 | 0.072 | 0.100 == == == ==
42, 48 == == == == 0.070 | 0.092 | 0.120 | 0.152 ==
Table 6 - FSM4P and FSU4P Electric Heater Static Pressure Drop (in. we)
CFM
UNIT SIZE 400 600 800 1000 1200 1400 1600 1800 2000
18, 24 0.020 0.044 | 0.075 | 0.110 | 0.100 == == == ==
30, 36, 42 == == 0.048 | 0.072 | 0.100 | 0.130 | 0.120 == ==
48 —= —= —= —= —= 0.092 | 0.120 | 0152 | 0.187
Table 7 - Electric Heater Static Pressure Drop (in. wc)
FEM4P, FSM4P, and FSU4P
FEM4P, FSM4P, and FSU4P 1800 — 3600 4200 — 6000
HEATER EXTERNAL STATIC HEATER EXTERNAL STATIC
ELEMENTS kW PRESSURE ELEMENTS kW PRESSURE
CORRECTION CORRECTION
0 0 +.02 0 0 +.04
1 3,5 +.01 2 8, 10 +.02
2 8, 10 0 3 9, 15 0
3 9, 15 ~.02 4 20 ~.02
4 20 ~.04 6 18, 24, 30 ~.10
20 496 01 5501 01