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INSTALLATION INSTRUCTIONS
High voltage connection
1-1/8" (28 mm) dia
knock outs
Low voltage
connection
Front return shown. Units
may also be installed as
bottom return. See the
applications section for
more detail.
Auxiliary drain connection
3/4" (19 mm) female
pipe thread (fpt)
Model Size
Unit Height
H
PSC 18K/24K
36-1/2 (928)
PSC 30K/36K
39-1/2 (1004)
ECM 18K/24K
36-1/2 (928)
ECM 30K/36K
39-1/2 (1004)
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 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 Figure 1 and
Figure 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
2
Figure 1 - Dimensional Drawing with Circuit Breaker
Breaker switch
(comes with
accessory
electric heater only)
Primary drain connection
3/4" (19 mm) female
pipe thread (fpt)
NOTE:Hand tighten only
Equipment shown with field-installed electric heat.
Table 1 – Dimensional Data
Dimensions- In. (mm)
Unit Width
W
20-1/2 (521)
22 (559)
20-1/2 (521)
22 (559)
Specifications subject to change without notice.
Remove the screws and
the access plate for drain
lines service.
All units are vertical upflow only.
Unit Width
Unit Depth
W1
D
17-2/5 (442)
15 (381)
18-4/5 (478)
19 (483)
17-2/5 (442)
15 (381)
18-4/5 (478)
19 (483)
back in order to allow condensate to properly drain from the
unit. 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.
ALTERNATE
DRAIN EXITS ON
EITHER SIDE OF UNIT
Fan Coil: FMA4X, FMA4P
Liquid line comection
copper (sweat)
Vapor line comection
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
the 7/8" (22 mm) opening;
in this situation the high-voltage
connection opening should be
enlarged to fit conduit.
Fresh air intakes,
4" (101.6mm) dia
knock outs
Shipping Weight
Unit Depth
D1
9-1/2 (242)
9-1/2 (242)
101 / 123 ( 46 / 56 )
9-1/2 (242)
9-1/2 (242)
Figure 2 - Condensate Drain
2" / 51mm
MIN DRAIN
2" / 51mm
MIN
PRIMARY
DRAIN
NOTE: Use plastic pipe from
condensate pan to
exterior of fan coil.
A170625
Unit Weight /
Lbs. (kg)
86 / 101 ( 39 / 46 )
79/ 95 ( 36 / 43 )
97/ 119 (44 / 54 )
SECONDARY
DRAIN
(TRAP EXTERNAL
TO UNIT)
A13011
496 01 8001 04
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