ICP FSM2X2400A1 Installation Guide
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, CAU-
TION, and NOTE are used to identify levels of haz-
ard seriousness. The signal word DANGER is only
used on product labels to signify an immediate haz-
ard. The signal words WARNING, CAUTION, and
NOTE will be used on product labels and through-
out 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 opera-
tion.
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.
TABLE OF CONTENTS
Introduction .................................... 2
Location ....................................... 2
Heater Packages ............................... 3
Position Unit ................................ 3 - 7
Air Ducts ...................................... 7
Electrical Connections ...................... 7 - 11
Refrigerant Tubing ............................. 11
Refrigerant Metering Device .................... 11
Condensate Drains ............................ 12
Accessories .................................. 13
Sequence of Operation ......................... 14
Start-up Procedure ............................ 14
Care and Maintenance ......................... 14
R-410A Quick Reference Guide ................. 15
DEATH, 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 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 5000 01 October 2005
INTRODUCTION
Models FEM and FSM are designed for maximum flexibil-
ity and can be used for upflow, horizontal left or right, and
downflow applications (accessory kit required for down-
flow or horizontal right).
Model FSU is designed for upflow installation, and can be
field modified for downflow and horizontal left or right ap-
plications (accessory kits required for downflow or hori-
zontal).
All models are available for system sizes 11/2- 5 tons
(18,000 - 60,000 BTUH) nominal cooling capacity.
LOCATION
Select the best position which suits the installation site
conditions. The location should provide adequate struc-
tural support, space in the front of the unit for service ac-
cess, 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.
If the unit is located in an area of high humidity, nuisance
sweating of casing may occur. On these installations a
wrap of 2" fiberglass insulation with a vapor barrier is rec-
ommended.
NOTE: Internal filter can be accessed from separate filter
door. If the filter can NOT be easily accessed, a remote
All models have a factory installed and appropriately
sized hard shut-off TXV metering device. FEM2, FSM2
and FSU2 are for R-22 refrigerant ONLY. FEM4, FSM4
and FSU4 are for R-410A refrigerant ONLY.
Factory approved electric heater packages are available
in sizes 3kW through 30kW. See Product Specification lit-
erature for available accessory kits.
filter is recommended. Refer to ACCA Manual D for re-
mote filter sizing.
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 combus-
tible flexible ducting within 36 inches of the supply
end of the fan coil.
Figure 1 1 Clearances and Unit Dimensions
OPENING)
No Heaters
With Heaters From First 3 feet of Supply Duct to Combustibles 1
Unit Size
1800
2400
3000
3500/3600
4200
4800
6000
Unit Size H (inches)
1800 421X6 421X6 421X6
2400 471Xs 471Xs 471Xs
3000 47%6 47%6 49%
3500 537/16
3600 537/16 495/8 495/8
4200 49% 49% 49%
4800 537/16 537/16 537/16
6000 593A6 593A6 593A6
C_
(SERVICE ACCESS)
All Sides 0
From Supply Duct 0
All Sides 0
From Supply Duct to Combustibles after 3 feet 0
L(OPENING) _/_
38-11-82
2 496 01 5000 01
HEATER PACKAGES
Factory approved, field installed, UL listed heater pack-
ages are available from the equipment supplier. See unit
rating plate for a list of factory approved heaters. Heaters
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 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.
Figure 2 1
OPTIONS
FRONT SERVICE CLEARANCE
18 - 48 models = 21"
60 model = 24"
UNITS
SECONDARY DRAIN
|
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 Y8to ΒΌ inch 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-sup-
plied bottom closure is required.
Upflow Installation
FIELD SUPPLIED
SUPPLY DUCT
LOW VOLT
ENTRY
OPTIONS
SLOPE COIL UNITS
MODEL SIZE A
18 (all) 12"
24 & 30 (all) 17"
11/2"
35 (FEM) & 36 (FSU) 19"
PRIMARY DRAIN
FIELD MODIFIED
A SIDE RETURN
LOCATION FOR
SLOPE COIL
UNITS ONLY
SECONDARY DRAIN
PRIMARY DRAIN
B. DOWNFLOW INSTALLATION
In this application, field conversion of the evaporator coil
is required using accessory Downflow Kit along with an
accessory Base Kit. See installation instructions pack-
aged with accessory kit. See Product Specification litera-
ture for kit part numbers.
C. HORIZONTAL INSTALLATION
Unit must NOT be installed with access panels facing up
or down. Access panels must only face to the side.
FEM and FSM models are factory built for horizontal left
installation (refer to Figures 3 and 4). They can be field
converted to horizontal right (accessory Gasket Kit re-
FIELD SUPPLIED
RETURN PLENUM
496 01 5000 01 3
quired, see Product Specification literature for part num-
ber). Refer to Figures 5 and 6.
FSU models require accessory kits for any horizontal
installation (see Product Specification literature for re-
quired accessory kits).
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
LOW VOLT
ENTRY
OPTIONS
Slope Coil In Horizontal Left Application (FEM & FSM factory configuration)
A-COIL
HORIZONTAL LEFT
FIELD
SUPPLIED
HANGING
STRAPS
SECONDARY 18 - 48 models = 21"
DRAIN 60 model = 24"
SECONDARY PRIMARY
DRAIN DRAIN
FRONT SERVICE CLEARANCE
(FULL FACE OF UNIT)
13/4_'
FILTER ACCESS
CLEARANCE
POWER
ENTRY
OPTIONS
Figure 4 1
FACTORY SHIPPED
HORIZONTAL LEFT
APPLICATION
PRIMARY
DRAIN
A-Coil in Horizontal Left Application (FEM & FSM factory configuration)
COIL
COIL
SUPPORT
RAIL
DRAIN PAN
SUPPORT
BRACKET
COIL
PRIMARY DRAIN
SECONDARY DRAIN
HORIZONTAL LEFT
HORIZONTAL
DRAIN PAN
AIR SEAL
-- BRACKET
BRACKET
HORIZONTAL LEFT
REFRIGERANT
CONNECTIONS
4 496 01 5000 01
HorizontalRight Conversionof 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 assem-
bly to right side casing flange.
3. Remove coil assembly.
4. Lay fan coil unit on its right side and reinstall coil as-
sembly 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 conden-
sate 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
SLOPE COIL
SKI
Conversion for Horizontal Right Applications - Slope Coil
COIL MOUNTING BLOWER
SCREW ASSEMBLY
DRAINPAN DRAIN
REFRIGERANT
CONNECTIONS
SECONDARY DRAIN
Horizontal Right Conversion of Units With A-Coils
1. Remove blower and coil access panel and fitting
panel (refer to Figure 6).
2. Remove coil mounting screw securing coil assem-
bly to right side casing flange.
3. Remove coil assembly.
4. Lay fan coil unit on its right side and reinstall coil as-
sembly with condensate pan down (refer to Figure
6).
5. Remove horizontal drain pan support bracket from
coil support rail on left side of unit and reinstall on
coil support rail on right side of unit.
6. Convert air-seal assembly for horizontal right (re-
fer to Figure 6).
a. Remove air-seal assembly from coil by removing
4 screws.
b. Remove coil drip flanges from A-coil and reinstall
on right side of coil (same side as horizontal drain
pan).
c. Remove filler plate (A) and install air splitter (B)
in place of filler plate.
d, Install filler plate (A) as shown in horizontal right
application.
e. Remove condensate troughs (C) and install on
opposite tube sheets.
f, Install hose onto plastic spout.
7. Install horizontal pan on right side of coil assembly.
8. Slide coil assembly into casing. Be sure coil brack-
et on each corner of vertical pan engages coil sup-
port rails.
9, Reinstall 2 snap-in clips to correctly position and
secure coil assembly in unit. Be sure clip with large
offsets is used on right side of unit to secure hori-
zontal pan.
10, Remove 2 oval coil access panel plugs and rein-
stall into holes on left side of coil access panel and
fitting panel.
11, Remove insulation knockouts on right side of coil
access panel
496 01 5000 01 5
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