International comfort products C Series Installation Instructions Manual page 28

INSTALLATION INSTRUCTIONS
Downflow Return Air
Figure 29
Configurations and Restrictions
Upflow Return Air Configurations
Figure 30
and Restrictions
Horizontal Return Air
Figure 31
Configurations and Restrictions
HORIZONTAL TOP
RETURN NOT
PERMITTED FOR
ANY MODEL
28
Figure 32
SUPPLY
AIR
*HORIZONTAL LEFT BOTTOM RETURN NOT PERMITTED
L10F033
FOR ALL MODELS. SEE TABLE BELOW.
INPUT*
40,000
60,000
80,000
100,000
120,000
*NOTE: Not all models may be available in all casing sizes shown
in the table above
L10F032
INPUT*
40,000
60,000
80,000
100,000
120,000
*NOTE: Not all models may be available in all casing sizes shown
in the table above
L10F034
Specifications subject to change without notice.
Gas Furnace: N9MSB
Horizontal Return Air
Configurations and Restrictions
HORIZONTAL TOP
RETURN NOT
PERMITTED FOR
ANY MODEL
*
*RETURN
2
AIR
HORIZONTAL LEFT
RETURN AIR CONNECTIONS
CASING CASING
CONNECTION
WIDTH WIDTH
INCHES 1 ONLY 2 ONLY 3 ONLY
14 3/16 YES YES
17 1/2 YES YES
14 3/16 YES YES
17 1/2 YES NO
17 1/2 YES YES
21 YES YES
21 YES YES
24 1/2 YES YES
HORIZONTAL RIGHT
RETURN AIR CONNECTIONS
CASING CASING
CONNECTION
WIDTH WIDTH
INCHES 1 ONLY 2 ONLY 3 ONLY
14 3/16 YES YES
17 1/2 YES YES
14 3/16 YES YES
17 1/2 YES YES
17 1/2 YES YES
21 YES YES
21 YES YES
24 1/2 YES YES
3
1
RETURN
AIR
A14006
COMBINATION COMBINATION
OF 1 & 2
NO YES
NO YES
NO YES
NO YES
NO YES
NO YES
NO YES
NO YES
COMBINATION COMBINATION
OF 1 & 2
NO YES
NO YES
NO YES
NO YES
NO YES
NO YES
NO YES
NO YES
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