Bryant-Carrier FB4C, FY5B Installation Manual
FB4C
FY5B
FAN COIL UNITS
FOR PURONr REFRIGERANT
SIZES 018 TO 060
Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1........................
INTRODUCTION 1..................................
HEATER PACKAGES 2..............................
INSTALLATION 2...................................
Step 1 — Check Equipment 2.........................
Step 2 — Mount Unit 2..............................
Step3—AirDucts 4...............................
Step 4 — Electrical Connections 4.....................
Step 5 — Refrigerant Tubing Connection and Evacuation 7..
Step 6 — Refrigerant Flow--Control Device 7.............
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................
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, 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, protective clothing
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. Consult local
building codes and the current editions of the National Electrical
Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical
Code CSA C22.1.
Recognize safety information. This is the safety--alert symbol
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,and
CAUTION. 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.
!
WARNING
ELECTRICAL OPERATION 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. Lock out and tag switch
with a suitable warning label.
!
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when
handling parts.
INTRODUCTION
Models FB4C and FY5B are Puron Fan Coils designed for
installation flexibility. These units are designed to meet the low air
leak requirements currently in effect.
FB4C uses a refrigerant piston metering device (018 thru 048) and
TXV (060) with an X13 integral electronically commutated motor
for efficiency. These units have be designed for upflow, downflow
(kit required), and horizontal orientations, including manufactured
and mobile home applications.
FY5B uses a refrigerant piston metering device (018 thru 048) with
2--speed PSC (permanent split capacitor) motors and TXV with
3--speed PSC motor for the 060 size, These units can be used for
upflow or downflow (kit required) orientations, including
manufactured and mobile homes applications.
These units require a field supplied air filter, and are designed
specifically for 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 all 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.
FB4C / FY5B
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--in (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.
018 - 048 21" (533 mm) FRONT SERVICE
060 - 060 24" (610mm) CLEARANCE
UPFLOW/DOWNFLOW
SECONDARY DRAIN
UPFLOW/DOWNFLOW
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--in (3 to 6 mm) thick,
between duct, unit, and floor.
POWER ENTRY
OPTIONS
UNIT
018
A COIL
UNITS
PRIMARY DRAIN
UPFLOW/DOWNFLOW
SECONDARY DRAIN
UPFLOW/DOWNFLOW
PRIMARY DRAIN
024 - 030
036 19" (483 mm)
1.5" (38 mm)
19" (483 mm)
2.5"
(64 mm)
Fig. 1 -- Slope Coil Unit in Upflow Application
FIELD SUPPLIED
SUPPLY DUCT
LOW VOLT
ENTRY
OPTIONS
A
12" (305 mm)
17" (432 mm)
FIELD MODIFIED
SIDE RETURN
A
LOCATION FOR
SLOPE COIL
UNITS ONLY
FIELD SUPPLIED
RETURN PLENUM
A07565
!
CAUTION
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--in (3 to 6 mm) thick, between duct, unit, and floor.
NOTE: Gasket kit number KFAHD0101SLP is also required for
all downflow applications to maintain low air leak/low sweat
performance.
C. Horizontal Installation (FB4C only)
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.)
!
CAUTION
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.
A-COIL
HORIZONTAL LEFT
PRIMARY
DRAIN
018-048 21" (533 mm)
060-060 24" (610 mm)
FRONT SERVICE
CLEARANCE
(FULL FACE
OF UNIT)
1.75" (44 mm)
FILTER ACCESS
CLEARANCE
A07566
LOW VOLT
ENTRY
OPTIONS
POWER
ENTRY OPTIONS
UNIT
FIELD
SUPPLIED
HANGING
STRAPS
SECONDARY
DRAIN
PRIMARY
DRAIN
SECONDARY
DRAIN
Fig. 2 -- Slope Coil Unit in Horizontal Left Application
(FB4C only)
2
DRAIN PAN
SUPPORT BRACKET
A
FACT ORY SHIPPED
HORIZONTAL LEFT
APPLICATION
B
C
HORIZONTAL
DRAIN PAN
AIR SEAL
ASSEMBLY
REFRIGERANT
CONNECTIONS
Fig. 3 -- A--Coil in Horizontal Left Application
(Factory Ready FB4C only)
NOTE: Modular units can be disassembled and components
moved separately to installation area for reassembly. This process
accommodates small scuttle holes and limiting entrances to
installation sites. (See Fig. 4.)
BLOWER BOX
2 SCREWS
REAR CORNER
BRACKET
2 SCREWS
COIL BOX
2 SCREWS
Fig. 4 -- Removal of Brackets on Modular Units Horizontal
Right Conversion of Units With Slope Coils (FB4C only)
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 previously 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.
COIL
BRACKET
COI L
SUPPORT
RAIL
DRAIN PAN
SUPPORT
BRACKET
COIL
BRACKET
PRIMARY DRAIN
HORIZONTAL LEFT
SECONDARY DRAIN
HORIZONTAL LEFT
A00072
A95293
COIL
SUPPORT
RAIL
SLOPE COIL
COIL MOUNTING
SCREW
SKI
DRAINPAN
REFRIGERANT
CONNECTIONS
PRIMARY DRAIN
SECONDARY DRAIN
BLOWER
ASSEMBLY
Fig. 5 -- Conversion for Horizontal Right Applications
Using a Slope Coil (FB4C only)
Horizontal Right Conversion of Units With A--Coils
1. Remove blower and coil access panels. (See Fig. 6.)
A
B
C
COIL
SUPPORT
RAIL
COIL
BRACKET
DRAIN PAN
SUPPORT
BRACKET
COIL
SUPPORT
RAIL
BRACKET
HORIZONTAL
PRIMARY DRAIN
HORIZONTAL RIGHT
SECONDARY DRAIN
HORIZONTAL RIGHT
REFRIGERANT
CONNECTIONS
COIL
DRAIN PAN
AIR SEAL
ASSEMBLY
Fig. 6 -- Conversion for Horizontal Right Applications
Using A--Coil (FB4C only)
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. (See Fig. 7.)
DRAIN PAN
SUPPORT BRACKET
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.(SeeFig.6.)
b. Remove air splitter (B) from coil seal assembly by re-
moving 3 screws. (See Fig. 3--factory shipped inset.)
A03001
HORIZONTAL
RIGHT
APPLICATION
A00071
A07571
FB4C / FY5B
3
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