International comfort products A Series Installation Instructions Manual page 20

Representative drawing only, some models may vary.
Fig. 32 - - Working Platform for Attic Installation
NOTE: Furnace shown is a direct vent application. Refer to the
venting section for allowable vent configurations.
NOTE: N Coil only, add 8- -in. separation between coil and
furnace for all other unshielded coils. (See evaporator coil spacer or
shield requirements.)
NOTE: Local codes may require a drain pan and condensate trap
when a condensing furnace is installed over a finished ceiling.
Representative drawing only, some models may vary.
Fig. 33 - - Suspended Furnace Installation
NOTE: Furnace shown is a direct vent application. Refer to the
venting section for allowable vent configurations.
NOTE: N Coil only, add 8- -in. separation between coil and
furnace for all other unshielded coils. (See evaporator coil spacer or
shield requirements.)
NOTE: Local codes may require a drain pan and condensate trap
when a condensing furnace is installed over a finished ceiling.
20
A190318
15" clearance
needed for trap
height
15"
A190306
Specifications subject to change without notice.
Supply Air Connections
For a furnace not equipped with a cooling coil, the outlet duct shall
be provided with a removable access panel. This opening shall be
accessible when the furnace is installed and shall be of such a size
that the heat exchanger can be viewed for possible openings using
light assistance or a probe can be inserted for sampling the air
stream. The cover attachment shall prevent leaks.
Connect supply- -air duct to flanges on furnace supply- -air outlet.
Bend flange upward to 90_ with wide duct pliers (Fig. 27). The
supply- -air duct must be connected to ONLY the furnace
supply- -outlet- -air duct flanges or air conditioning coil casing
(when used). DO NOT cut main furnace casing side to attach
supply air duct, humidifier, or other accessories. All supply- -side
accessories MUST be connected to duct external to furnace main
casing.
Return Air Connections
The return- -air duct may be connected to bottom of the furnace.
The side of casing that faces downward may also be used for return
air connection. A combination of the bottom and downward facing
side may also be used. The upward facing side of the casing cannot
be used as a return air connection (Fig. 31).
Bottom Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return- -air opening. Remove and discard this panel when
bottom return air is used. To remove bottom closure panel (Fig.
34).
Side Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return- -air opening. This panel MUST be in place when
side return air inlet(s) are used without a bottom return air inlet.
Not all horizontal furnaces are approved for side return air
connections (Fig. 31). Where required by code, seal bottom closure
to furnace with tape, mastic, or other durable sealing method.
SCREWS
(2)
Representative drawing only, some models may vary.
1 Lay furnace on the back or side
2 Remove the two (2) screws that secure the bottom
closure panel to the furnace casing and remove the
panel
Fig. 34 - - Removing Bottom Closure Panel (2 Screws)
BOTTOM
CLOSURE
A170123
440 01 4601 01