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17
Representative drawing only, some models may vary.
A10493
Fig. 20 -- Duct Flanges
A11036
Fig. 21 -- Upflow Return Air Configurations and Restrictions
A11037
Fig. 22 -- Downflow Return Air Configurations
and Restrictions
A13109
Fig. 23 -- Horizontal Return Air Configurations
and Restrictions
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
SCREWS (2)
BOTTOM
CLOSURE
Representative drawing only,
some models may vary in appearance.
A170123
Fig. 24 -- Removing Bottom Closure Panel (2 Screws)
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
only side return air is used. Where required by code, seal bottom
closure to furnace with tape, mastic or other durable sealing
method.
NOTE
: Side return--air openings can only be used in UPFLOW
configurations. Do not use side return--air openings in
DOWNFLOW or HORIZONTAL configurations. See Fig. 21, 22,
and 23.
Downflow Installation
NOTE:
The furnace must be pitched as shown in Fig. 19 for
proper condensate drainage.
Supply Air Connections
NOTE
: For downflow applications, this furnace is approved for
use on combustible flooring when any one of the following 3
accessories are used:
S
Special Base, KGASB
S
Cased Coil Assembly Part No. CNPV, CNRV, CAP, or CAR
S
Coil Box Part No. KCAKC
1. Determine application being installed from Table 5.
2. Construct hole in floor per Table 5 and Fig. 25.
3. Construct plenum to dimensions specified in Table 5 and
Fig. 25.