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:
!WARNING
The signal word CAUTION is used throughout this manual in the following manner:
!CAUTION
Signal Words on Product Labeling
Signal words are used in combination with colors and/or pictures on product labels.
TABLE OF CONTENTS
INTRODUCTION |
2 |
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WARNING |
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LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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. . . . . . . . . . . . . . . . . . . . . . . . . . .HEATER PACKAGES |
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PERSONAL INJURY, AND/OR PROPERTY DAMAGE |
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AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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HAZARD |
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ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . |
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Failure to carefully read and follow this warning could |
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REFRIGERANT TUBING |
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result in |
equipment malfunction, property damage, |
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personal |
injury and/or death. |
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REFRIGERANT FLOW--CONTROL DEVICE |
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Installation or repairs made by unqualified persons could |
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REFRIGERANT METERING DEVICE |
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result in equipment malfunction, property damage, |
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CONDENSATE DRAINS . . . . . . . . . . . . . . . . . . . . . . . . |
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personal injury and/or death. |
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ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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The information contained in this manual is intended for |
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SEQUENCE OF OPERATIONS |
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use by a qualified service technician familiar with safety |
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procedures and equipped with the proper tools and test |
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START--UP PROCEDURE |
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instruments. |
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CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . |
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Installation must conform with local building codes and |
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AIRFLOW PERFORMANCE TABLES . . . . . . . . . . . . . |
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with the National Electrical Code NFPA70 current edition. |
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. . . . . . . . . . . .R--410A QUICK REFERENCE GUIDE |
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Specifications are subject to change without notice.
496 01 5502 03 Mar/2016
INSTALLATION INSTRUCTIONS
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 are available 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 are available 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.
!WARNING
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
Fan Coils: FEM4X, FEM4P, REM4X, REM4P
REQUIRED CLEARANCES -- ALL MODELS inches (mm)
No |
All Sides |
0 |
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Heaters |
From Supply Duct |
0 |
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All Sides |
0 |
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With |
From First 3 feet of Supply Duct to |
1 (25) |
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Combustibles |
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Heaters |
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From Supply Duct to Combustibles |
0 |
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after 3 feet |
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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.
!CAUTION
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 |
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BLOWER BOX
2 SCREWS
2 SCREWS
REAR CORNER
BRACKET
2 SCREWS
COIL BOX
2 |
Specifications are subject to change without notice. |
496 01 5502 03 |
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INSTALLATION INSTRUCTIONS
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 components moved separately to installation area for reassembly. This process accommodates small scuttle holes and limiting entrances to installation sites (Figure 1).
Fan Coils: FEM4X, FEM4P, REM4X, REM4P
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SLOPE COIL UNITS |
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MODEL |
A |
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18 |
12” (305mm) |
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FEM4P2400AL, |
12” (305mm) |
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REM4P2400AL |
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ALL 30 and |
17” (432mm) |
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FEM4X2400CL |
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36 |
17” (432mm) |
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Figure 2 |
Upflow Installation |
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POWER ENTRY |
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FIELD SUPPLIED |
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OPTIONS |
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SUPPLY DUCT |
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LOW VOLT |
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ENTRY |
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OPTIONS |
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FRONT SERVICE CLEARANCE |
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18 -- 48 models = 21” (533 mm) |
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60 model = 24” (610 mm) |
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A-COIL |
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UNITS |
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UPFLOW/DOWNFLOW |
1½” |
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SECONDARY DRAIN |
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UPFLOW/DOWNFLOW |
19” |
(483mm) |
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PRIMARY DRAIN |
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A |
FIELD MODIFIED |
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SIDE RETURN |
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2½” |
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LOCATION FOR |
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SLOPE COIL |
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(64mm) |
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UNITS ONLY |
UPFLOW/DOWNFLOW |
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SECONDARY DRAIN |
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UPFLOW/DOWNFLOW |
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FIELD SUPPLIED |
PRIMARY DRAIN |
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RETURN PLENUM |
C. DOWNFLOW INSTALLATION
!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.
!WARNING
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
496 01 5502 03 |
Specifications are subject to change without notice. |
3 |
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INSTALLATION INSTRUCTIONS
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.
Fan Coils: FEM4X, FEM4P, REM4X, REM4P
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.
Figure 3 |
Slope Coil In Horizontal Left Application (FEM4X, FEM4P, REM4X, REM4P factory configuration) |
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FIELD
SUPPLIED
HANGING
STRAPS
SECONDARY
DRAIN
LOW VOLT
ENTRY
OPTIONS
POWER |
PRIMARY |
ENTRY |
DRAIN |
OPTIONS |
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A-COIL
HORIZONTAL LEFT
SECONDARY |
PRIMARY |
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DRAIN |
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DRAIN |
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FRONT SERVICE CLEARANCE (FULL FACE OF UNIT)
18 -- 48 models = 21” (533mm)
60 model = 24” (610mm)
1¾” (45mm) FILTER ACCESS CLEARANCE
4 |
Specifications are subject to change without notice. |
496 01 5502 03 |
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INSTALLATION INSTRUCTIONS |
Fan Coils: FEM4X, FEM4P, REM4X, REM4P |
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Figure 4 |
A-Coil in Horizontal Left Application (FEM4X, FEM4P, REM4X, REM4P factory configuration) |
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A |
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FACTORY SHIPPED |
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COIL |
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BRACKET |
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HORIZONTAL LEFT |
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APPLICATION |
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COIL |
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SUPPORT |
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B |
RAIL |
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C |
DRAIN PAN |
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SUPPORT |
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BRACKET |
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COIL |
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BRACKET |
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HORIZONTAL |
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DRAIN PAN |
PRIMARY DRAIN |
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AIR SEAL |
HORIZONTAL LEFT |
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ASSEMBLY |
SECONDARY DRAIN |
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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 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).
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.
Figure 5 |
Conversion for Horizontal Right Applications -- Slope Coil |
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COIL MOUNTING |
BLOWER |
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SCREW |
ASSEMBLY |
COIL SUPPORT RAIL
SLOPE COIL
DRAINPAN |
REFRIGERANT |
PRIMARY DRAIN |
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CONNECTIONS |
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SECONDARY DRAIN |
496 01 5502 03 |
Specifications are subject to change without notice. |
5 |
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