FMA4X, FMA4P: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
A13008
Fig. 4 – Frame Mount Installation
CONVERSION TO BOTTOM RETURN
This product is shipped configured for front return and can be converted
for bottom return. To convert the unit to bottom return, remove the
bottom panel and lower front panel (short panel above front opening and
below the filter slot). Attach the panel removed from the bottom of the
unit to the front return opening.
Condensate Drain
Condensate pan has primary and secondary drain connections to meet
FHA requirements (
). These connections have 3/4" (19 mm)
female pipe threads. Tubing for all condensate drains should be a
minimum of 7/8" (22 mm) OD. Drain lines from condensate pan to
exterior of unit must be plastic pipe. Drain should be pitched downward
at a slope of 1" per 10 feet (25 mm per 3 m). If coil is located in or above
a living space where damage may result from condensate overflow, a
separate 3/4" (19 mm) drain must be provided from secondary drain
connection. Run this drain to a place in compliance with local
installation codes where it will be noticed when unit is operational.
Condensate flow from secondary drain indicates a plugged primary
drain. Install a 2" (51 mm) trap in condensate drain line as close to coil
as possible. A factory approved drain trap kit is available. Make sure that
the top of trap is below connection to drain pan to prevent condensate
from overflowing drain pan. Prime all traps, test for leaks, and insulate
in areas where sweating of the traps and drain lines could potentially
cause water damage Consult local codes for additional restrictions or
precautions.
Accessory UV lights are not approved for use with this fan coil.
Electrical Connections
Refer to unit wiring instructions for recommended wiring procedures.
Use No. 18 AWG color-coded, insulated (35°C minimum) wire to make
low-voltage connections between thermostat and unit. If thermostat is
located more than 100 feet (30 m) from unit as measured along
low-voltage wire, use No. 16 AWG color-coded, insulated (35°C
minimum) wire.
A13092
Fig. 5 – Transformer Connections
NOTE:
Before proceeding with electrical connections, make certain that
voltage, frequency, and phase correspond to that specified on rating
plate. Also, check to be sure that the service provided by utility is
sufficient to handle additional load imposed by this equipment.
Refer to unit wiring label for proper field high- and low-voltage wiring.
Make all electrical connections in accordance with NEC and any local
codes or ordinances that might apply. Unit must have a separate branch
electrical circuit.
NOTE:
All units are shipped from factory wired for 240VAC
transformer operation. For 208VAC operation, move primary lead from
240VAC terminal to 208VAC terminal.
See
for field low-voltage wiring. See
for location
of the electrical inlets. For maximum ampacity and over-current
protection, see unit rating plate or product data sheet.
1. Provide power supply for unit being installed in accordance with
unit wiring diagram and rating plate.
2. Connect line-voltage leads to the harness pigtail or the heat-kit
circuit breaker. Use copper wire only.
WARNING
!
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing or servicing the unit, always turn off all power to unit.
There may be more than one disconnect switch. Turn off accessory
heater power if applicable. Lock out and tag switch with a suitable
warning label.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Field wires on side of disconnect found in fan coil remain live, even
when circuit breaker is off. Service and maintenance to incoming
wiring cannot be performed until main disconnect switch (remote to the
unit) is turned off. Lock out and tag switch with a suitable warning
label.
Unit cabinet must have a continuous electrical path to ground in order
to minimize potential for personal injury or death if an electrical fault
should occur. This ground may consist of electrical wire or approved
conduit when installed in accordance with existing codes. (See Item 3
below, regarding UL Listed Conduit.)
240
COM
208
BLK
YEL
BLK
RED
SECONDARY
PRIMARY
