Figure 27
Downflow Return Air
Configurations and Restrictions
/ _fl_ RETURN
AIR
SIDE RETURN
NOT PERMI]q'ED
FOR ANY MODEL
SIDE RETURN
NOT PERMITTED
FOR ANY MODEL
O
®
®
Figure 28
i s q LY L10F033
Upflow Return Air Configurations
and Restrictions
SUPPLY _"
............._!RJ,_....................
RETURN
AIR
® ®
® ®
O
®
RETURN
AIR
RETURN _" _ UPFLOW
AIR | _1_ RETURN AIR
/ RESTRICTIONS L10F032
Horizontal Return Air
Figure 29
Configurations and Restrictions
HORIZONTAL TOP
RETURN NOT
PERMITTED FOR
ANY MODEL
RETURN
AIR
)
..............................i
SUPPLY
AIR i,
* NOTE: RESTRICTION SAME FOR -/
HORIZONAL LEFT 'RETURN
AIR
HORIZONAL
RETURN AIR
RESTRICTIONS
SIDE RETURN AIR NOT PERMITTED FOR 2000 CFM AND
ABOVE OF AIR FLOW
L10F034
External Filter Cabinet Configurations
Figure 30 _Accessory Bottom Filter Rack
0
® @
22-5/t 6
(566.4)
)
,)
- ,)
o
o
o
o
B
A
A
28-7/16
(722.2)
e
e
e
e
2-3/t 6
(55.5)
L10F031
Table 9 Dimensional Drawing - in. (mm)
FURNACE
KIT NO. A B
WIDTH
NAH B00501FF 14-3/16 11-3/8 14-1/4
(360.4) (289) (362)
NAHB00601 FF 17-1/2 14-5/8 17-5/8
(444.5) (371.5) (447.7)
21 18-1/8 21-1/8
NAHB00701FF
(533.4) (460.4) (536.6)
NAH B00801FF 24-1/2 21-5/8 24-5/8
(622.3) (549.3) (625.5)
m
o
o
26 Specifications subject to change without notice. 440 01 4001 04