International Comfort Products FEM4P2400AL, REM4P2400AL Installation Manual
INSTALLATION INSTRUCTIONS
Fan Coils
FEM4X, FEM4P, REM4X, REM4P
These instructions must be read and understood completely before attempting installation.
Safety Labeling and Signal Words
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.
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
!
The signal word CAUTION is used throughout this
manual in the following manner:
!
Signal Words on Product Labeling
Signal words are used in combination with colors and/or
pictures on product labels.
WARNING
CAUTION
TABLE OF CONTENTS
INTRODUCTION 2...............................
LOCATION 2....................................
HEATER PACKAGES 2...........................
AIR DUCTS 7...................................
ELECTRICAL CONNECTIONS 7..................
REFRIGERANT TUBING 10........................
REFRIGERANT FLOW--CONTROL DEVICE 10......
REFRIGERANT METERING DEVICE 11.............
CONDENSATE DRAINS 11........................
ACCESSORIES 12................................
SEQUENCE OF OPERATIONS 13..................
START--UP PROCEDURE 13......................
CARE AND MAINTENANCE 13.....................
AIRFLOW PERFORMANCE TABLES 14.............
R--410A QUICK REFERENCE GUIDE 16............
!
PERSONAL INJURY, AND/OR PROPERTY DAMAGE
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 persons could
result in equipment malfunction, property damage,
personal injury and/or death.
The information contained in this manual is intended for
use by a qualified service technician familiar 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.
WARNING
496 01 5502 03 Mar/2016Specifications are subjec t to change without notic e.
INSTALLA TION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, REM4P
INTRODUCTION
Models FEM4X, FEM4P, REM4X, REM4P are for R--410A
refrigerant and can be used for upflow, horizontal left or
right, and downflow applications (accessory kit required for
downflow).
FEM4P models areavailable for system sizes 1--1/2 -- 4 tons
(18,000 -- 48,000 BTUH) nominal cooling capacity. FEM4P
use a refrigerant piston metering device with an ECM.
FEM4X models areavailable for system sizes 1--1/2 -- 5 tons
(18,000 -- 60,000 BTUH) nominal cooling capacity. All
models use an ECM motor and have a factory--installed and
appropriately sized hard shut--off TXV metering device and
are for R--410A refrigerant ONLY.
REM4P models are available for system sizes 2 through 4
(24,000 -- 48,000 BTUH) tons and REM4X models are
available for system size 5 tons (60,000 BTUH) nominal
cooling capacity. All models use an ECM integral
electronically commutated motor for efficiency. The 2
through 4 ton models use a piston metering device, the 5 ton
model uses a TXV metering device.
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
LOCATION
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.
Nuisance sweating may occur if the unit is installed in a high
humidity environment with low airflow 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.
REQUIRED CLEARANCES -- ALL MODELS inches
(mm)
No
Heaters
With
Heaters
From Supply Duct 0
From First 3 feet of Supply Duct to
From Supply Duct to Combustibles
All Sides 0
All Sides 0
Combustibles
after 3 feet
1 (25)
0
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. Heaters that are
not factory approved could cause damage which would not
be covered under the equipment warranty.
POSITION UNIT
Unit can stand or lie on floor, or hang from ceiling or wall.
Allow space for wiring, piping, and servicing unit.
!
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property
damage
A field fabricated auxiliary drain pan, with a separate 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 auxiliary drain pan for ANY horizontal
installation.
Figure 1 Modular Unit Assembly
CAUTION
BLOWER BOX
!
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.
See Clearances
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WARNING
2 SCREWS
REAR CORNER
BRACKET
Specifications are subjec t to change without notic e.
2 SCREWS
2 SCREWS
COIL BOX
INSTALLA TION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, REM4P
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 Figure 2.A
field--supplied bottom closure is required.
B. MODULAR UNITS
FEM4X6000B fan coil is a two--piece modular unit. This
allows for modular units to be disassembled and
MODEL A
18 12” (305mm)
FEM4P2400AL,
REM4P2400AL
ALL30and
FEM4X2400CL
36 17” (432mm)
components moved separately to installation area for
reassembly. This process accommodates small scuttle
holes and limiting entrances to installation sites (Figure 1).
Figure 2 Upflow Installation
POWER ENTRY
OPTIONS
FRONT SERVICE CLEARANCE
18 -- 48 models = 21” (533 mm)
60 model = 24” (610 mm)
A--COIL
UNITS
SLOPE COIL UNITS
FIELD SUPPLIED
SUPPLY DUCT
LOW VOLT
ENTRY
OPTIONS
12” (305mm)
17” (432mm)
UPFLOW/DOWNFLOW
SECONDARY DRAIN
UPFLOW/DOWNFLOW
PRIMARY DRAIN
UPFLOW/DOWNFLOW
SECONDARY DRAIN
UPFLOW/DOWNFLOW
PRIMARY DRAIN
1½”
19” (483mm)
2½”
(64mm)
FIELD MODIFIED
SIDE RETURN
A
LOCATION FOR
SLOPE COIL
UNITS ONLY
FIELD SUPPLIED
RETURN PLENUM
C. DOWNFLOW INSTALLATION
! WARNING
!
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 requires
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 personal injury
or product and property damage.
496 01 5502 03 3
Specifications are subjec t to change without notic e.
STRUCTURAL DAMAGE
Failure to follow this warning could result in personal
injury or death, or property damage.
Combustible floor base is required when installing in a
downflow application with electric heat strips.
Structural damage could occur if manufacturer’s
downflow base accessory kit is not use when installing
in a downflow application.
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
INSTALLA TION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, REM4P
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 (EBAC01GSK) is also required
for all downflow applications to maintain low air leak/low
sweat performance.
D. HORIZONTAL INSTALLATION
Unit must NOT be installed with access panels facing up or
down. Access panels must only face to the side.
Figure 3
Slope Coil In Horizontal Left Application (FEM4X, FEM4P, REM4X, REM4P factory configuration)
FIELD
SUPPLIED
HANGING
STRAPS
FEM4X, FEM4P, REM4P and REM4X models are factory
built for horizontal left installation (refer to Figure 3 and
Figure 4). They can be field converted to horizontal right
(accessory Gasket Kit required, see Product Specification
literature for part number). Refer to Figure 5 and Figure 6.
NOTE: When suspending unit from ceiling, dimples in
casing indicate suitable location of screws for mounting
metal support straps (refer to Figure 3).
NOTE: For optimum condensate drainage performance in
horizontal installations, unit should be leveled along its
length and width.
A--COIL
HORIZONTAL LEFT
SECONDARY
DRAIN
PRIMARY
DRAIN
LOW VOLT
ENTRY
OPTIONS
POWER
ENTRY
OPTIONS
SECONDARY
DRAIN
PRIMARY
DRAIN
FRONT SERVICE CLEARANCE
(FULL FACE OF UNIT)
18 -- 48 models = 21” (533mm)
60 model = 24” (610mm)
1¾” (45mm)
FILTER ACCESS
CLEARANCE
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INSTALLA TION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, REM4P
Figure 4
FACTORY SHIPPED
HORIZONTAL LEFT
APPLICATION
A--Coil in Horizontal Left Application (FEM4X, FEM4P, REM4X, REM4P factory configuration)
A
COIL
BRACKET
COIL
SUPPORT
B
C
BRACKET
HORIZONTAL
DRAIN PAN
AIR SEAL
ASSEMBLY
REFRIGERANT
CONNECTIONS
HORIZONTAL LEFT
RAIL
DRAIN PAN
SUPPORT
BRACKET
COIL
PRIMARY DRAIN
SECONDARY DRAIN
HORIZONTAL LEFT
Horizontal Right Conversion of Units With Slope Coils
1. Remove blower and coil access panel and fitting
panel (refer to Figure 5).
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 5).
Figure 5
COIL SUPPORT RAIL
SLOPE COIL
COIL MOUNTING
SCREW
Conversion for Horizontal Right Applications -- Slope Coil
5. Attach coil to casing flange using coil mounting screw
previously removed.
6. 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.
BLOWER
ASSEMBLY
DRAINPAN
496 01 5502 03 5
REFRIGERANT
CONNECTIONS
Specifications are subjec t to change without notic e.
PRIMARY DRAIN
SECONDARY DRAIN
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