FMA4X, FMA4P: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
3
A190362
A190363
NOTE: Mounting wall and supporting structure must be able to support a minimum of
150 lbs. (68 kg)
Fig. 3 – Wall Mount Installation
NOTE:
FMA4P are shipped with a piston metering device designed for
the most common outdoor unit 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. FMA4X are provided with a factory installed TXV.
Ductwork Specifications
Connect supply-air duct over 3/4" (19 mm) flange provided on
supply-air opening. Secure duct to flange using applicable fasteners for
type of duct used, and seal duct-to-unit joint.
NOTE:
Short duct runs tend to increase noise level.
When fan coil is equipped with an electric heater, install air ducts in
accordance with standards 90A and 90B of National Fire Protection
Association (NFPA). Use of flexible connectors between ductwork and
unit will prevent transmission of vibration. When electric heater is
installed, use heat-resistant material for a flexible connector between
ductwork and unit air discharge connection. Ductwork passing through
unconditioned space must be insulated and covered with a vapor barrier.
NOTE:
Unit is intended for non-ducted return-air applications. Product
Data sheet includes a list of accessories, including louvered wall panels
and return air opening grills. If ducted return is used, airflow must meet
criteria established in the Product Data. Local codes may limit this unit
to single-level applications.
Design the duct system in accordance with “ACCA” Manual “0” Design
for Residential Winter and Summer Conditioning and Equipment
Selection. Latest editions are available from : “ACCA” Air Conditioning
Contractors of America. If duct system incorporates flexible air duct, be
sure pressure drop information (straight length plus all turns) shown in
“ACCA” Manual “D” is accounted for in system.
Table 1 – Dimensional Data
Model Size
Dimensions- In. (mm)
Unit Weight /
Shipping Weight
Lbs. (kg)
Unit Height
H
Unit Width
W
Unit Width
W1
Unit Depth
D
Unit Depth
D1
18
36-1/2 (928)
20-1/2 (521)
17-2/5 (442)
15 (381)
9-1/2 (242)
88 / 99 (40 / 45)
24
36-1/2 (928)
20-1/2 (521)
17-2/5 (442)
15 (381)
9-1/2 (242)
88 / 99 (40 / 45)
30
39-1/2 (1004)
22 (559)
18-4/5 (478)
19 (483)
9-1/2 (242)
110/ 121 (50 / 55)
36
39-1/2 (1004)
22 (559)
18-4/5 (478)
19 (483)
9-1/2 (242)
110/ 121 (50 / 55)
WARNING
!
INJURY HAZARD
Failure to follow this warning could result in personal injury or death.
Do not, under any circumstances, connect return ductwork to any other
heat-producing device such as fireplace inserts, stoves, etc.
Unauthorized use of such devices may result in fire, carbon monoxide
poisoning, explosion, personal injury or property damage.
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.
