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