Bryant-Carrier FFMA Installation Manual
FFMA
WALL MOUNT
FAN COIL UNIT
Installation Instructions
NOTE: Read the entire instruction manual before starting
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1.........................
INTRODUCTION 1...................................
INSTALLATION 2....................................
Step 1 — Check Equipment 2...........................
Step 2 — Mount Fan Coil 2............................
Step 3 — Ductwork Specifications 4.....................
Step 4 — Condensate Drain 4...........................
Step 5 — Electrical Connections 4.......................
Step 6 — Select Proper Blower Speed 5...................
Step7—TXV 6....................................
START--UP 6.........................................
SEQUENCE OF OPERATION 6.........................
CARE AND MAINTENANCE 6.........................
AIRFLOW PERFORMANCE TABLES 7..................
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 individual instructions
packaged with kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have a fire extinguisher available. Read these instructions
thoroughly and follow all warning 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 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 instructions or
manuals, be alert to the potential for personal injury. Understand
the signal words DANGER, WARNING,andCAUTION.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.
INTRODUCTION
FFMA Fan Coils are designed with application flexibility in mind
and are suitable for closet and flush mount installations. The
FFMA is available with field--installed heat with circuit breaker.
Units are used indoors as the fan coil for split--system heat pumps
or air conditioners. The FFMA uses a refrigerant piston metering
device (018, 024, 030, and 036) and TXV (019, 025, 031, 037).
The FFMA also uses a 3 Speed PSC Motor (018, 024, 030, and
036) and a 5 speed multi--tap ECM motor for efficiency (019, 025,
031, 037). Units are available in 18,000 through 36,000 Btuh
nominal cooling capacities.
Field--installed heaters are available in 5, 7.5, and 10 kW sizes. The
coil is equipped with sweat--type connections and is vapor--charged
with dry nitrogen. The casing is fully insulated to meet applications
in conditioned space. Additional insulation is required if the unit is
installed in unconditioned space.
Units are designed for upflow applications only. Local codes may
limit this free--air--return type unit to installation in single--level
applications.
NOTE: Nuisance sweating may occur if the unit is installed in a
humid location with low airflow.
!
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.
!
WARNING
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
.
!
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.
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.
CAUTION
D
D1
W
W1
Low voltage
connection
Breaker switch
(comes with accessory
electric heater only)
Front return shown. Units
may also be installed as
bottom return. See the
applications section for
more detail.
Primary drain connection
3/4” (19 mm) female
pipe thread (fpt)
Auxiliary drain connection
3/4” (19 mm) female
pipe thread (fpt)
NOTE: Hand tighten only
Return air opening
All units are vertical upflow only.
Equipment shown with field-installed electric heat.
Liquid line connection
copper (sweat)
Vapor line connection
copper (sweat)
High voltage connection
7/8” (22 mm) dia
knock outs
(both sides of unit)
Some heater sizes may
require a conduit larger than
H
the 7/8” (22 mm) opening;
in this situation the high-voltage
connection opening should be
enlarged to fit conduit.
Fresh air intakes,
3.4” (85.8 mm) dia
opening with
plastic cap
Fig. 1 -- Dimensional Drawing with Circuit Breaker
Table 1 – Dimensional Data
Dimensions- In. (mm)
Model Size
Unit H eight
H
Unit Width
W
Unit Width
W1
Unit Depth
D
Unit Depth
D1
18, 19 36-1/2 (928) 20-1/2 (521) 17-4/5 (452) 15 (381) 9-1/2 (242) 88 / 99 (40 / 45)
24, 25 36-1/2 (928) 20-1/2 (521) 17-4/5 (452) 15 (381) 9-1/2 (242) 88 / 99 (40 / 45)
30, 31 39-1/2 (1004) 22 (559) 18-4/5 (478) 19 (483) 9-1/2 (242) 110/ 121 (50 / 55)
36, 37 39-1/2 (1004) 22 (559) 18-4/5 (478) 19 (483) 9-1/2 (242) 110/ 121 (50 / 55)
INSTALLATION
Step 1 — Check Equipment
Unpack unit and move to final location. Remove carton, taking
care not to damage unit. Remove protective sheet metal from the
base of the unit, if equipped. Inspect equipment for damage prior to
Failure to do this will result in condensate leaking out from the
unit, potentially causing structural damage to the surrounding
support structures, drywall, carpet, etc. around the unit. Also, both
mounting structures require the ability to accommodate a minimum
of load of 150 pounds. Failure to do this will cause damage to the
support structure and potentially damage the unit.
Unit Weight /
Shipping Weight
Lbs. (kg)
installation. File claim with shipping company if shipment is
damaged or incomplete. Locate rating plate on unit. It contains
information needed to properly install unit. Check rating plate to be
sure unit matches job specifications. A front access panel is
provided, which permits access to blower assembly and electrical
controls for removal and servicing.
NOTE: Minimum clearance of 21” (533 mm) is required in front
of access panel for servicing only. Installation clearance from
combustible materials is 0” (0 mm) from cabinet and supply--air
duct (plenum included). Ensure there is adequate space on top of
unit for refrigerant line connections and on bottom of unit for
condensate trap. (See Fig. 1 and 2.)
Step 2 — Mount Fan Coil
Fan coil Mounting Options
The fan coil comes standard with two different options for
mounting: wall mount or frame mount. Both mounting options
require the unit to be level from side to side and from front to back
2" / 51mm
MIN
ALTERNATE
DRAIN EXITS ON
EITHER SIDE OF UNIT
Fig. 2 -- Condensate Drain
PRIMARY
DRAIN
NOTE: Use plastic pipe from
condensate pan to
exterior of fan coil.
2" / 51mm
MIN DRAIN
SECONDARY
(TRAP EXTERNAL
in order to allow condensate to properly drain from the unit.
A150162
DRAIN
TO UNIT)
A13011
2
PROVIDED FANïCOIL
MOUNT
BRACKET
WALL BRACKET SCREW HOLES
ARE
LOCATED 9” (229 MM) FROM
TOP OF THE UNIT
THE
WOOD
SCREWS
PROVIDED
MOUNT
WALL
BRACKET
WOOD
SCREWS
WALL BRACKET SCREW HOLES
ARE
LOCATED 1” (25 MM) BELOW
BOTTOM OF THE UNIT
THE
NOTE: Mounting wall and supporting structure must be able to support a minimum of 150 lbs (68 kg).
Fig. 3 -- Wall Mount Installation
Wall Mount
The fan coil comes standard with a wall mounting bracket and fan
coil mounting bracket. Reference Fig. 3 for more detail.
1. Remove the wall mounting bracket from the back of the
unit by removing one screw which attaches the bracket to
the fan coil.
NOTE: Discard the screw after you have removed the wall
mounting bracket.
2. Install bracket on the wall by using three wood screws (not
provided) per wall--mount bracket. Make sure the bracket is
level in order to provide proper drainage from the unit.
NOTE: Do not attach the wall mounting bracket into unsupported
drywall. Make sure that the wood screws are going into a structure
that can support a minimum load of 150 pounds.
3. Lift the fan coil above the wall mounting bracket and attach
the unit to the installed bracket. Reference Fig. 3.
Frame Mount
The fan coil comes with eight clearance holes, four on each side.
These holes are used to mount the fan coil inside a frame structure
(see Fig. 4). When mounting in this fashion, make sure that the
wood screws are mounted from within the fan coil and not outside
of the unit. Installing the screws from outside of the unit may
damage the coil.
After moving unit into place, install refrigerant tubing as
follows:
1. Route tubing to connection points, taking care not to block
service access.
2. Remove plugs from liquid and vapor lines.
3. Braze connections using either silver bearing or non--silver
bearing brazing material. Do not use soft solder (materials
which melt below 800_F / 427_C). Consult local code
requirements. Always flow nitrogen through the system
refrigerant lines while brazing.
4. Pressurize system and leak--test. Repeat procedure until
leak--free.
NOTE: Model sizes 018, 024, 030 and 036 are shipped with a
piston metering device designed for the most common outdoor unit
PROVIDED WALL
MOUNT BRACKET
WOOD
SCREWS
SUPPORTING
(51
X
WALL MOUNT BRACKET FOR USE
WITH 30 AND 36 SIZE MODELS,
PROVIDED ON THOSE SIZES.
2” X
102 MM) STRUCTURE
4”
L14S011
matches. The piston included with the fan coil is unique to this
product and cannot be replaced with the piston shipped with the
outdoor unit. Refer to AHRI ratings to check if your combination
can use the piston shipped with the unit or requires an accessory
TXV. Model sizes 019, 025, 031 and 037 are provided with a
factory installed TXV.
WALL
STRUCTURE
SUPPORTING
X 4”
2”
X 102 MM)
(51
STRUCTURE
STUD
ATTACHMENT
HOLES
SUPPORTING
X 4”
2”
X 102 MM)
(51
STRUCTURE
WOOD
SCREWS
A13008
Fig. 4 -- Frame Mount Installation
!
CAUTION
ENVIRONMENTAL HAZARD
Failure to follow this caution may result in environmental
damage.
Do not vent refrigerant to atmosphere. Recover during system
repair or final unit disposal.
3
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