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INSTALLATION INSTRUCTIONS
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.
Step 3 — 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
connectors
between
ductwork
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 nonducted return- air applications.
Local codes may limit this unit to single- level applications.
WARNING
!
INJURY HAZARD
Failure to follow this warning
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,
monoxide poisoning, explosion, personal injury or
property damage.
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.
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.
Step 4 — Condensate Drain
Condensate
pan
has
connections to meet FHA requirements. (See Figure 2)
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' (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.
4
(NFPA).
Use
of
and
unit
will
could
result
carbon
primary
and
secondary
Specifications subject to change without notice.
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.
Optional extrusions are provided on bottom panel if installer
wishes to secure drain lines. See Figure 5 for detail. Accessory
UV lights are not approved for use with this fan coil.
Figure 5 - Drainline Installation
flexible
prevent
Step 5 — Electrical Connections
in
ELECTRICAL OPERATION HAZARD
Failure to follow this warning
personal injury or death.
Before installing or servicing unit, always turn off
all power to unit. There may be more than one
disconnect switch. Turn
power if applicable. Lock out and tag switch with a
suitable warning label.
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 ft.
(30m) from unit as measured along low- voltage wire, use No.
16 AWG color- coded, insulated (35°C minimum) wire.
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
low - voltage wiring. Make all electrical connections in
drain
accordance with NEC and any local codes or ordinances that
might apply. Unit must have a separate branch electrical
circuit.
Fan Coil: FMA4X, FMA4P
WARNING
!
could
off
accessory
wiring label
for proper field high -
result
in
heater
-
- and
496 01 8001 04
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