Allied A80US2V - Page 26

508155-01Issue 2108Page 26 of 49
Multiple Venting
The A80US2V furnace can vent in multiple positions. See
Figure 16.
The make up box may be removed and the combustion air
inducer may be rotated clockwise or counterclockwise 90°
to allow for vertical or horizontal vent discharge in a vertical
or horizontal cabinet position. Remove the four mounting
screws, rotate the assembly (assembly consists of orice
plate, proving switch, gasket and combustion air inducer),
then reinstall the mounting screws. See unit Installation
Instructions for more detail.
The combustion air pressure switch must be moved for
horizontal discharge air left position.
IMPORTANT
flue
transition
vent pipe
vent pipe
vent pipe
vent pipe
flue
transition
FLOW
AIR
FLOW
AIR
vent pipe
FLOW
AIR
flue transition
vent pipe
pressure switch
vent pipe
In all positions route the wires away from moving parts and the heat of the inducer
motor to prevent damage to the wires. The pressure switch must be installed above
the CAI to prevent moisture from collecting in the hoses or switch.
Figure 16.