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Form No. S3423-1112
Supersedes S3423-912
Page 12 of 28
Blower Air
Evap. Coil
Counterflow
Position
Cond. Coil
Water Out
Cond. Coil
Desuper.
Water In
Water In
Desuper.
Water Out
Supply
Return
Main Drain
Blower in
Alternate Position
7/8" Line Set
3/8" Line Set
Blower Air
Evap. Coil
Upflow
Cond. Coil
Position
Cond. Coil
Water Out
Desuper.
Water In
Desuper.
Water In
Water Out
Supply
Return
Return
Secondary
Return
Drain
Main Drain
Blower in
Shipped Position
7/8" Line Set
Control Panel
MIS-2828
Control Panel
3/8" Line Set
Drain
Secondary
Air Filter Required
One FR23 (16 x 25 x 1) or
field supplied equivalent
required for upflow side
return installation
Bottom return upflow and
top return counterflow filter
provision must be field
supplied
NOTE:
See Page 20 for physical
dimensions of GTA coil
if removed from casing
for installation on a
fossil-fuel furnace.
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