International Comfort Products FCM4X24 Installation Manual
INSTALLATION INSTRUCTIONS
Fan Coils
FCM4X24--60
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:
!
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.......................................
INSTALLATION 2...................................
Check Equipment 2..............................
Mount Fan Coil 2................................
Air Ducts 6.....................................
Electrical Connections 7..........................
Refrigerant Tubing Connection & Evacuation 9......
Condensate Drain 9.............................
Unit Start--Up 10................................
Accessory Installation 10.........................
Start--Up and Troubleshooting 1 1..................
FCM4X Fan Coil Sequence of Operation 15.........
CARE AND MAINTENANCE 15.......................
R--410A Quick Reference Guide 17....................
!
PERSONAL INJURY, AND/OR PROPERTY DAMAGE
HAZARD
Failure to carefully read and followthis 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 d amage, 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 4201 03 Mar/2016
INSTALLA TION INSTRUCTIONS Fan Coils: FCM4X
INTRODUCTION
Model FCM4X fan coils are designed to be installed with
the Observert Communicating Wall Control. The FCM4X
fan coils will provide airflow at a rate commanded by the
Wall Control. The nominal airflow/ton rate is 350 CFM/ton.
The Wall Control will modify the commanded airflow under
certain operating modes. Refer to the Wall Control
literature for further system control details. This fan coil will
not respond to commands from a common thermostat
except under certain emergency situations explained in
this document. The instructions contained herein provide
guidance to successfully install this fan coil.
Model FCM4X fan coil units are designed for flexibility and
can be used for upflow, horizontal, or downflow
applications. These units are designed specifically for
R--410A refrigerant and must be used only with R--410A
refrigerant air conditioners and heat pumps as shipped.
INSTALLATION
Procedure 1. — Check Equipment
Unpack unit and move to final location. Remove carton
taking care not to damage unit.
Inspect equipment for damage prior to installation. File
claim with shipping company if shipment is damaged or
incomplete. Locate unit rating plate which contains proper
installation information. Check rating plate to be sure unit
matches job specifications.
Procedure 2. — Mount Fan Coil
FCM4X unit can stand or lie on floor, or hang from ceiling
or wall. Allow space for wiring, piping, proper trapping and
servicing unit.
IMPORTANT: When unit is installed over a finished ceiling
and/or living area, building codes may require and it is
recommended by the factory, a field--supplied secondary
condensate pan to be installed under the entire unit. Some
localities may allow the alterative of running a separate,
secondary condensate line. Consult local codes for
additional restrictions or precautions.
FCM4X fan coils can be installed for upflow and
horizontal--left applications as factory shipped. (See
Figures 1, 2 and 3.) FCM4X units can be installed for
horizontal--right applications with field modifications.
FCM4X units may be converted for downflow applications
using factory--authorized accessory kits.
NOTE: To ensure proper drainage for horizontal
installations, unit must be installed so it is within 1/8” / 3.18
mm level of the length and width of unit.
A. Modular Units
The FCM4X60 Fan Coil are 2--piece modular units.
Modular construction allows installer to disassemble unit
into 2 components, coil box and blower box, for ease of
installation.
These units are designed to meet low air leak
requirements currently in effect. Because of this, units
need special attention in the condensate pan and drain
connection area and when brazing tubing.
These units are available for application in systems of
24,000 through 60,000 Btuh nominal cooling capacities.
Factory--authorized, field--installed electric heater
packages are available in 5 through 30 kW. See
Specifications for available accessory kits.
If the unit is located in an area of high humidity, nuisance
sweating of the casing may occur. On these installations a
wrap of 2 (51 mm) fiberglass insulation with a vapor
barrier is recommended.
To disassemble unit, remove rear corner brackets by
removing 2 screws which secure brackets. Remove either
2 screws in each front corner of coil box, or 2 screws in
blower box. (See Fig. 4.) Do not remove all 4 screws in
each corner. Sections may now be separated by lifting top
section from lower section.
To reassemble, reverse above procedure. Be certain to
reinstall all fasteners when reassembling.
B. Upflow Installation
If return air is to be ducted through a floor, set unit on floor
over opening and use 1/8” / 3.18 mm to 1/4” / 6.35 mm
thick fireproof resilient gasket between duct, unit, and
floor.
Side return is a field option on slope coil models. Cut
opening per dimensions. (See Fig. 1.) A field--supplied
bottom closure is required.
All return--air must pass through the coil.
C. Horizontal Installations
Units must not be installed with access panels facing up or
down.
Be sure installation complies with all applicable building
codes that may require installation of a secondary
condensate pan.
1. Arrange support for unit by setting it in or above
secondary condensate pan.
2. When suspending unit from ceiling dimples in casing
indicate proper location of screws for mounting metal
support straps. (See Fig. 2.)
2 496 01 4201 03
INSTALLA TION INSTRUCTIONS Fan Coils: FCM4X
Figure 1 Slope Coil Unit in Upflow Application
POWER ENTRY OPTIONS
24 -- 17.5” (444.5 mm)
36, 48 -- 21” (533.4 mm)
60 -- 24” (609.6 mm)
FRONT SERVICE
CLEARANCE
ACOIL
UNITS
UPFLOW/DOWNFLOW
SECONDARY DRAIN
FIELD SUPPLIED SUPPLY DUCT
LOW VOLT ENTRY OPTIONS
38.1 mm)
1--1/2”
UPFLOW/DOWNFLOW
PRIMARY DRAIN
19”
(482.6 mm)
FIELD MODIFIED
SIDE RETURN
19”
2--1/2”
(63.5 mm)
(482.6 mm)
LOCATION FOR
36 UNITS ONLY
UPFLOW/DOWNFLOW
SECONDARY DRAIN
UPFLOW/DOWNFLOW
PRIMARY DRAIN
FIELD SUPPLIED
RETURN PLENUM
Figure 2 Slope Coil in Horizontal--Left Application (Factory Ready unit only)
A-- COIL
HORIZONTAL LEFT
FIELD
SUPPLIED
HANGING
STRAPS
UNIT
SECONDARY
DRAIN
24 36, 48 21” (533.4 mm)
60 24” (609.6 mm)
FRONT SERVICE
CLEARANCE
(FULL FACE
OF UNIT)
DRAIN
YPRIMAR
A07139
LOW VOLT
ENTRY
OPTIONS
/4” (44.45 mm)
3
1
FILTER ACCESS
CLEARANCE
PRIMARY
DRAIN
A07140
POWER
ENTRY OPTIONS
SECONDARY
DRAIN
496 01 4201 03 3
INSTALLA TION INSTRUCTIONS Fan Coils: FCM4X
Figure 3 A Coil in Horizontal--Left Application
A
FACTORY SHIPPED
HORIZONTAL LEFT
APPLICATION
B
C
HORIZONTAL
DRAIN PAN
Figure 4 Modular Unit Assembly
BLOWER BOX
2 SCREWS
2 SCREWS
REAR CORNER
BRACKET
2 SCREWS
COIL BOX
COIL
BRACKET
COIL
SUPPORT
RAIL
DRAIN PAN
SUPPORT
BRACKET
COIL
BRACKET
PRIMARY DRAIN
AIR SEAL
ASSEMBL
Y
REFRIGERANT
CONNECTIONS
D. Horizontal--Right Conversion of Units with Slope
HORIZONTAL LEFT
SECONDARY DRAIN
HORIZONTAL LEFT
A00072
Coils
NOTE
: Gasket kit number EBAC01GSK is required for
horizontal slope coil conversion to maintain low air
leak/low sweat performance.
1. Remove blower and coil access panels and fitting
panel. (See Fig. 5.)
2. Remove screw securing coil assembly to right side
casing flange.
3. Remove coil assembly.
4. Lay fan coil on its right side and reinstall coil assembly
with condensate pan down.
5. Attach coil to casing flange using previously removed
coil mounting screw.
6. Make sure pan cap in fitting door is properly seated on
fitting door to retain low air leak rating of the unit.
7. Add gaskets included in kit per kit instructions.
8. Reinstall access panels and fitting panel, aligning
holes with tubing connections and condensate pan
connections.
Make sure liquid and suction tube grommets are in place
to prevent air leaks and cabinet sweating. Install grommets
after brazing.
E. Horizontal Right Conversion of Units With A--Coil
To convert units for horizontal right installations:
1. Remove blower and coil access panels. (See Fig. 6.)
2. Remove metal clip securing fitting panel to
condensate pan. Remove fitting panel.
3. Remove 2 snap--in clips securing A--coil in unit.
4. Slide coil and pan assembly out of unit.
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.
4 496 01 4201 03
INSTALLA TION INSTRUCTIONS Fan Coils: FCM4X
6. Convert air seal assembly for horizontal right.
a. Remove air seal assembly from coil by removing 4
screws.
b. Remove air splitter (B) from coil seal assembly by
removing 3 screws. (See Fig. 6 inset)
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 hose onto plastic spout.
8. Slide coil assembly into casing. Be sure coil bracket on
each corner of vertical pan engages coil support rails.
9. Reinstall 2 snap--in clips to correctly position and
secure coil assembly in unit. Be sure clip with large
offset is used on right side of unit to secure horizontal
pan.
Figure 5
Slope Coil in Horizontal Right Application
COIL MOUNTING
SCREW
10. Remove two oval fitting caps from left side of the coil,
access panel, and fitting panel.
1 1. Remove insulation knockouts on right side of coil
access panel.
12. Remove 2 oval coil access panel plugs and reinstall
into holes on left side of coil access panel and fitting
panel.
13. Install condensate pan fitting caps (from Step 10) in
right side of coil door making sure that cap snaps and
seats cleanly on back side of the coil door. Make sure
no insulation interferes with seating of cap.
14. Reinstall access and fitting panels, aligning holes with
tubing connections and condensate pan connections.
Be sure to reinstall metal clip between fitting panel and
vertical condensate pan.
Make sure liquid and suction tube grommets are in place
to prevent air leaks and cabinet sweating.
BLOWER
ASSEMBLY
COIL
SUPPORT
RAIL
SLOPE COIL
SKI
DRAINPAN
REFRIGERANT
CONNECTIONS
PRIMARY DRAIN
SECONDARY DRAIN
A03001
496 01 4201 03 5
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