Carrier 40FKA User manual

40FKA
Comfort Heat Pump System
002-006
Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
This symbol →indicates a change since the last issue.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause personal injury or property damage.
Consult a qualified installer, service agency, or your distributor or
branch for information or assistance. The qualified installer or
agency must use factory-authorized kits or accessories when
modifying this product. Refer to the individual instructions pack-
aged with kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for brazing operations. Have fire extinguisher
available. Read these instructions thoroughly and follow all
warnings or cautions attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special require-
ments.
Recognize safety information. This is the safety-alert symbol .
When you see this symbol on the unit and in instructions manuals,
be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
Fig. 1—Comfort Heat Pump system
A98049
40FKA FAN COIL
THERMIDISTAT ™
CONTROL
OUTDOOR TEMPERATURE SENSOR
Visit www.carrier.com
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 3d 2e PC 101 Catalog No. 534–017 Printed in U.S.A. Form 40FK-7SI Pg 1 3-02 Replaces: 40FK-5SI

INTRODUCTION
Model 40FKA Fan Coil units are designed for flexibility and can
be used for upflow, horizontal, or downflow (kit required and
manufactured and mobile home) applications. A Carrier Thermi-
distat™ Control (TSTATCCPRH01–B) is included with the
40FKA unit. See Back Page for QUICK REFERENCE COM-
FORT HEAT SET-UP INSTRUCTIONS.
These units are available for application in systems of 18,000
through 60,000 Btuh nominal cooling capacities. Factory-
authorized, field-installed electric heater packages are available in
5 through 30 kw. See Product Data for available accessory kits.
Before installing or servicing unit, always turn off all power
to unit. There may be more than 1 disconnect switch. Turn off
accessory heater power if applicable. Electrical shock can
cause personal injury or death.
INSTALLATION
Step 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.
Step 2—Mount Fan Coil
Unit can stand or lie on floor, or hang from ceiling or wall. Allow
space for wiring, piping, and servicing unit.
IMPORTANT: When unit is installed over a finished ceiling
and/or living area, building codes may require 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.
When installing any fan coil over a finished ceiling and/or living
area, installation of a secondary drain pan under entire unit to
avoid damage to ceiling is recommended.
40FKA Fan Coils can be installed for upflow and horizontal-left
applications as factory shipped. (See Fig. 2, 4 and 8.) Units can be
installed for horizontal-right applications with field modifications.
(See Fig. 5.) Units may be converted for downflow applications
using factory-authorized accessory kit.
NOTE: To ensure proper drainage for horizontal installations,
unit must be installed so it is within 1/8 in. level of the length and
width of unit.
UPFLOW INSTALLATION
If return air is to be ducted, install duct flush with floor. Set unit
on floor over opening.
Only use return-air opening provided. All return air must pass
through the coil. (See Fig. 2.)
MODULAR UNITS
The 40FKA Fan Coil in size 006 is a 2-piece modular unit.
Modular construction allows installer to disassemble unit into 2
components, coil box and blower box, for ease of installation. (See
Fig. 3.)
To disassemble unit, remove rear corner brackets by removing 2
screws which secure brackets. (See Fig. 3.) Remove either 2
screws in each front corner of coil box, or 2 screws in blower box.
Do not remove all 4 screws in each corner. (See Fig. 3.) 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.
HORIZONTAL INSTALLATIONS
Be sure installation complies with all applicable building codes
that may require installation of a secondary condensate pan.
Fig. 2—Slope Coil in Upflow Application
A00091
A COIL
UNITS
POWER ENTRY
OPTIONS
LOW VOLT
ENTRY
OPTIONS
FIELD MODIFIED
SIDE RETURN
LOCATION FOR
SLOPE COIL
UNITS ONLY
FIELD SUPPLIED
RETURN PLENUM
UPFLOW/DOWNFLOW
SECONDARY DRAIN
UPFLOW/DOWNFLOW
PRIMARY DRAIN
UNIT
003 A 19 In.
A
1 1⁄2″
2 1⁄2″
19″
FIELD SUPPLIED
SUPPLY DUCT
24-IN. FRONT SERVICE
CLEARANCE
UPFLOW/DOWNFLOW
SECONDARY DRAIN
UPFLOW/DOWNFLOW
PRIMARY DRAIN
002-005 21-IN.
006
2

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. 4.)
HORIZONTAL-RIGHT CONVERSION OF UNITS WITH
SLOPE COILS
To convert units for horizontal right installations:
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. (See Fig. 5.)
5. Attach coil to casing flange using previously removed coil
mounting screw.
6. 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.
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.
6. Convert air-seal assembly for horizontal right.
a. Remove air-seal assembly from coil by removing 4 screws.
(See Fig. 6.)
b. Remove air splitter (B) from coil seal assembly by remov-
ing 3 screws. (See Fig. 6-factory-shipped 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 appli-
cation.
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 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.
10. Remove 2 oval coil access panel plugs and reinstall into holes
on left side of coil access panel and fitting panel.
11. Remove insulation knockouts on right side of coil access
panel.
12. 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 conden-
sate pan.
Make sure liquid and suction tube grommets are in place to prevent
air leaks and cabinet sweating.
Fig. 3—Modular Unit Assembly
A95293
2 SCREWS
2 SCREWS
REAR CORNER
BRACKET
BLOWER BOX
COIL BOX 2 SCREWS
3

DOWNFLOW INSTALLATIONS
To convert units for downflow applications, refer to Installation
Instructions supplied with kit for proper installation. For 40FKA
unit size 003, use kit Part No. KFADC0201SLP. For 40FKA unit
sizes 002, 005, and 006 use kit Part No. KFADC0401ACL. Use
fireproof resilient gasket, 1/8- to 1/4-in. thick, between duct, unit,
and floor.
MANUFACTURED AND MOBILE HOME HOUSING
APLICATIONS
1. Fan coil unit must be secured to the structure using field-
supplied hardware.
2. Allow a minimum of 24”clearance from access panels.
3. Recommended method of securing for typical applications
a. If fan coil is away from wall, attach pipe strap to top of fan
coil using No. 10 self tapping screws. Angle strap down
Fig. 4—Slope Coil in Horizontal-Left Application (Factory Ready)
A00096
UNIT
FIELD
SUPPLIED
HANGING
STRAPS
LOW VOLT
ENTRY
OPTIONS
POWER
ENTRY OPTIONS
SECONDARY
DRAIN
002-005 21-IN.
006 24-IN.
FRONT SERVICE
CLEARANCE
(FULL FACE
OF UNIT)
SECONDARY
DRAIN
A-COIL
HORIZONTAL LEFT
PRIMARY
DRAIN
PRIMARY
DRAIN
1 3/4 IN.
FILTER ACCESS
CLEARANCE
Fig. 5—Slope Coil in Horizontal Right Application
A02002
COIL MOUNTING
SCREW BLOWER
ASSEMBLY
REFRIGERANT
CONNECTIONS
SECONDARY DRAIN
OVERFLOW HOLE
PRIMARY DRAIN
DRAINPAN
SLOPE COIL
SKI
COIL
SUPPORT
RAIL
4
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and away from back of fan coil, remove all slack, and
fasten to wall stud of structure using 5/16-in. lag screws.
Typical both sides of fan coil.
b. If fan coil is against wall, secure fan coil to wall stud using
1/8-in. thick right-angle brackets. Attach brackets to fan
coil using No. 10 self tapping screws and to wall stud using
5/16-in. lag screws. (See Fig. 7.)
Step 3—Air Ducts
Connect supply-air duct over outside of 3/4-in. flange provided on
supply-air opening. Secure duct to flange with proper fasteners for
type of duct used, and seal duct-to-unit joint.
Duct connection flanges are provided on unit air discharge
connection.
When using 40FKA units with 18-, 20-, 24-, and 30-kw electric
heaters, maintain a 1-in. clearance from combustible materials to
discharge plenum and ductwork for a distance of 36 in. from unit.
Use accessory downflow base to maintain proper clearance on
downflow installations.
Use flexible connectors between ductwork and unit to prevent
transmission of vibration. When electric heater is installed, use
heat resistant material for flexible connector between ductwork
and unit at discharge connection. Ductwork passing through
unconditioned space must be insulated and covered with vapor
barrier.
DUCTWORK ACOUSTICAL TREATMENT
Metal duct systems that do not have a 90°elbow and 10 ft of main
duct to first branch takeoff may require internal acoustical insula-
tion lining. As an alternative, fibrous ductwork 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 ductwork shall comply with National
Fire Protection Association Standards 90A or B as tested by UL
Standard 181 for Class 1 air ducts.
Step 4—Electrical Connections
On units with a factory installed disconnect with pull-out removed,
service and maintenance can be safely performed on only the load
side of the control package.
Fig. 6—A-Coil in Horizontal-Right Application
A00071
COIL
SUPPORT
RAIL
COIL
BRACKET
DRAIN PAN
SUPPORT
BRACKET
COIL
SUPPORT
RAIL
COIL
BRACKET
HORIZONTAL
DRAIN PAN
PRIMARY DRAIN
HORIZONTAL RIGHT
SECONDARY DRAIN
HORIZONTAL RIGHT
REFRIGERANT
CONNECTIONS AIR SEAL
ASSEMBLY
A
B
C
HORIZONTAL
RIGHT
APPLICATION
Fig. 7—A-Coil
A02003
DOWN FLOW
BASE KIT (KFACB)
UNIT AGAINST WALL
1/8-IN.THICK ANGLE
MOUNTING BRACKET
(TYPICAL BOTH SIDES)
SECURE FAN COIL TO STRUCTURE
UNIT AWAY FROM WALL
PIPE STRAP
(TYPICAL BOTH SIDES)
OR
SECURE UNIT TO FLOOR
ANGLE BRACKET OR PIPE STRAP
4”MAX
4”MAX
5
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