Carrier FY4ANF042000, FY4ANF030000, FY4ANF024000, FY4ANF018000, FX4CNF060000 Installation Guide
...
Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS ........................ 1
INTRODUCTION .................................. 1
HEATER PACKAGES .............................. 1
INSTALLATION ................................... 1
Step 1 - Check Equipment .......................... 1
Step 2 - Mount Unit ............................... 2
Step 3 - Air Ducts ................................ 4
Step 4 - Electrical Connections ...................... 4
Step 5 - Refrigerant Tubing Connection and Evacuation . .. 7
Step 6 - Refrigerant Flow-Control Device .............. 8
Step 7 - Condensate Drains ......................... 8
Step 8 - Accessories ............................... 9
Step 9 - Sequence of Operation ..................... 10
START-UP PROCEDURES ......................... 10
CARE AND MAINTENANCE ....................... 10
AIRFLOW PERFORMANCE TABLES ................ 11
PURON@ (R-410A) QUICK REFERENCE GUIDE ...... 12
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
packaged 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
requirements.
Recognize safety information. This is the safety-alert symbol /b,.
When you see this symbol on the unit and in instruction 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 may 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.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
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.
INTRODUCTION
Models FX4C and FY4A are designed for flexibility and can be
used for upflow, horizontal, or downflow (kit required) and
manufactured and mobile home applications. These units are
designed to meet the low air leak requirements currently in effect.
Because of this, the units need special attention in the condensate
pan and drain connection area and when brazing tubing. These
units are designed specifically for Puron c_)refrigerant and must be
used only with Puron (> refrigerant air conditioners and heat pumps
as shipped. These units are available for systems of 18,000 through
60,000 Btuh nominal cooling capacity. Factory-authorized.
field-installed electric heater packages are available in sizes 5
through 30kW. See Product Data literature for available accessory
kits.
HEATER PACKAGES
This unit may or may not be equipped with an electric heater
package. For units not equipped with factory-installed heat, a
factory-approved, field-installed, UL listed heater package is
available from your 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. If fan coil contains a factory-installed
heater package, minimum circuit ampacity (MCA) and maximum
fuse/breaker may be different than units with a same size
field-installed accessory heater. The differences is not an error and
is due to calculation difference per UL guidelines.
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 Unit
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 as an alternative, the running of a
separate, secondary condensate line. Consult local codes for
additional restrictions or precautions.
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" (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. (See Fig. 1.) A field-supplied bottom closure is
required.
NOTE: Gasket kit number KFAHD0101SLP is also required for
all downflow applications to maintain low air leak/low sweat
performance.
C. Horizontal Installation
Units must not be installed with access panels facing up or down.
All other units are factory built for horizontal left installation. (See
Fig. 2 and 3.) When suspending unit from ceiling, dimples in
casing indicate suitable location of screws for mounting metal
support straps. (See Fig. 2.)
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in product or property
damage.
For optimum condensate drainage performance in horizontal
installations, unit should be leveled along its length and width.
For horizontal applications having high return static and humid
return air, the Water Management Kit. KFAHC0125AAA. may
need to be used to assist in water management.
A07565
Fig. 1 - Slope Coil Unit in Upflew Application
B. Downflow Installation
In this application, field conversion of the evaporator is required
using accessory downflow kit along with an accessory base kit.
Use fireproof resilient gasket, 1/8 to 1/4" (3 to 6 mm) thick,
between duct, unit, and floor.
UNIT 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
units. The vertical drains have an overflow hole between the
primary and secondary drain holes. This hole is plugged for all
applications except downflow, but must be used for downflow.
During the conversion process, remove 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 the low air leak performance of the unit.
NOTE: To convert units for downflow applications, refer to
Installation Instructions supplied with kit for proper installation.
For slope fan coils, use kit Part No. KFADC0201SLP. For A-coils,
use kit Part No. KFADC0401ACL. Use fireproof resilient gasket.
1/8 to 1/4" (3 to 6 mm) thick, between duct, unit, and floor.
HANGING
STRAPS
ENTRY
OPTIONS
SECONDARY
DRA_N
DRA_N
Fig. 2 - Slope Coil Unit in Horizontal Left Application
CONNECTIONS
Fig. 3 - A-Coil in Horizontal Left Application (Factory
Ready)
018048 21" {833 ram)
060 060 24" (610 rnm)
FRONTSERVICE
CLEARANCE
{FULLFACE
[©FUNT
i
1 75" {44 ram)
F_LTE R ACCESS
CLEARANCE
A07566
cot L
SUPPORT
RAtL
DRAENPAN
SUPPORT
A00072
NOTE:Modularunitscanbedisassembledandcomponents
movedseparatelytoinstallationareaforreassembly.Thisprocess
accommodatessmallscuttleholesandlimitingentrancesto
installationsites.(SeeFig.4.)
BRACKET _ _
COIL BOX
Fig. 4 - Removal of Brackets on Modular Units
Horizontal Right Conversion of Units With Slope ('oils
NOTE: Gasket kit number KFAHD0101SLP is required for
horizontal slope coil conversion to maintain low air leak/low sweat
performance.
1. Remove blower and coil access panel and fitting panel. (See
Fig. 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. (See Fig. 5.)
5. Attach coil to casing flange using coil mounting screw pre-
viously removed.
6. Make sure the pan cap in the fitting door is properly seated
on the fitting door to retain the low air leak rating of the
unit.
7. Add gaskets from kit KFAHD per kit instructions.
8. Align holes with tubing connections and condensate pan
connections, and reinstall access panels and fitting panel.
Make sure liquid and suction tube grommets are in place to prevent
air leaks and cabinet sweating. Install after brazing.
2 SCREWS
A95293
Horizontal Right Conversion of Units With A-Coils
1. Remove blower and coil access panels. (See Fig. 6.)
CONNECTIONS
SUPPORT
SUPPORT
SUPPORT
HORIZONTAL RIGHT
HORIZONTAL RIGHT
-AIR SEAL
APPLICATION
Fig. 6 - Conversion for Horizontal Right Applications Using
A-Coil
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 sup-
port rail on left side of unit and reinstall on coil support rail
on right side of unit. (See Fig. 7.)
i7 F[
A00071
A03001
Fig. 5 - Conversion for Horizontal Right Applications Using a
Slope Coil
A07571
Fig. 7 - Drain Pan Support Bracket
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 re-
moving 3 screws. (See Fig. 3-factory shipped inset.)
c. Remove filter plate (A) and install air splitter (B) in
place of filter plate.
d. Install filter plate (A) as shown in horizontal right ap-
plication.
e. Remove condensate troughs (C) and install on opposite
tube sheets.
f. Install hose onto plastic spout.
7.Installhorizontalpanonrightsideofcoilassembly.
8.Slidecoilassemblyintocasing.Besurecoilbracketoneach
cornerofverticalpanengagescoilsupportrails.
9.Reinstall2 snap-inclipstocorrectlypositionandsecure
coilassemblyinunit.Besureclipwithlargeoffsetsisused
onrightsideofunittosecurehorizontalpan.
10.Removetwoovalfittingcapsfromtheleftsideofthecoil
doorandfittingpanel.
11.Removeinsulationknockoutsonrightsideofcoilaccess
panel.
12.Remove2 ovalcoilaccesspanelplugsandreinstallinto
holesonleftsideofcoilaccesspanelandfittingpanel.
13.Installcondensatepanfittingcaps(fromitem10)inthe
rightsideofthecoildoormakingsurethatthecapsnaps
andseatscleanlyonthebacksideofthecoildoor.Make
surenoinsulationinterfereswithseatingofthecap.
14.Reinstallaccessfittingpanels,aligningholeswithtubing
connectionsandcondensatepanconnections.Besuretore-
installmetalclipbetweenfittingpanelandverticalconden-
satepan.
Makesureliquidandsuctiontubegrommetsareinplacetoprevent
airleaksandcabinetsweating.
D. Manufactured and Mobile Home Housing Applications
1. Fan coil unit must be secured to the structure using field-
supplied hardware.
2. Allow a minimum of 24" (610 mm) 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 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.
4" (102mm) MAX
SECURE FAN COILTO STRUCTURE
UNIT AWAY FROM WALL
PIPE STRAP
(TYPICAL BOTH SIDES)
,%,. oR
_NST W,_
125" (3mm)
MOUNTING BRACKET
(TYPICAL BOTH SIDES)
brackets to fan coil using no. 10 self-tapping screws
and to wall stud using 5/16-in. lag screws. (See Fig. 8.)
Step 3 -- Air Ducts
Connect supply-air duct over the outside of 3/4" (19 mm) flanges
provided on supply-air opening. Secure duct to flange, using
proper fasteners for type of duct used, and seal duct-to-unit joint.
If return-air flanges are required, install factory-authorized
accessory kit.
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.
Units equipped with 20-30kW electric heaters require a 1" (25
mm) clearance to combustible materials for the first 36" (914 mm)
of supply duct.
Ductwork Acoustical Treatment
Metal duct systems that do not have a 90 ° elbow and 10' (3m) of
main duct to first branch takeoff may require internal acoustical
insulation 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 as tested by UL Standard 181 for Class
1 air ducts.
Step 4 -- Electrical Connections
All products from the factory utilize a printed-circuit board (PCB)
which has a low voltage circuit protective fuse (5 amp), fan motor
speed tap selection terminal (SPT), and time delay relay (TDR)
jumper. To disable the TDR feature, sever the jumper wire JW1.
(See Fig. 9 and 10.)
When a factory-approved accessory control package has been
installed, check all factory wiring per unit wiring diagram and
inspect factory wiring connections to be sure none were loosened
in transit or installation. If a different control package is required.
see unit rating plate.
DOWN FLOW
(KFACB)
_._ SECURE UNtTTO FLOOR
ANGLE BRACKET OR PIPE STRAP
_=
4" (102ram) MAX
Fig. 8 - A-Coil
b. If fan coil is against wall, secure fan coil to wall stud
using 1/8" (3 mm) thick right-angle brackets. Attach
A07567
R2
R3
03
[16
[111
Fig. 9 - Fan Coil Printed Circuit Board for FY4A Model
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