26
©
AIRFLOW
3_!/"
rYP
FOR HORIZON1AL
HANGING
NOTES:
UNIT SiZE E
040-08 16
040-12 16
060-08 16
060-12 16
060-16 16
080-12 16
080-16 16
080-20 19-1/2
100-16 19-1/2
100-20 19-1/2
120-20 23
140-20 23
I Minimum return-air openings at fnrnace, based on metal duct. if flex duct is used,
see flex duct manufacturer's recommendations for equivalent diameters.
2 Minimum return-air opening at furnace:
a For 800 CFM-16-in round or I4'/_ x 12-in. rectangle
b. For 1200 CFM-20-in. round or 14/_ x 19/_4n. rectangle
c. For 1600 CFM-22-in. round or 14/2 x 23:/_-in. rectangle,
d For airflow requirements above I800 CFM see Air Delivery table in Product Data
literature for specific _se of single side inlets The use of both side inlets, a
combination of ! side and the bottom, or the bottom only will ensure adequate
return air openings for airflow requirements above 1800 CFM at 05 WC ESP
Dimensions (In.)
A D
17-1/2 15-7/8
17-1/2 15-7/8
17-1/2 15-7/8
17-1/2 15-7/8
17-1/2 15-7/8
17-1/2 15-7/8
17-1/2 15-7/8
21 19-3/8
21 19-3/8
21 19-3/8
24-1/2 22-7/8
24-1/2 22-7/8
Fig. 2--Dimensional Drawing
BOT] OM iNLET
A02149
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