American International PR 150-34 2NV or 2PV Manual Do Utilizador

12

The standard horizontal air inlet termination is a 3 inch 
pipe which terminates at the exterior wall and utilizes a 
coupling to prevent the pipe from being pushed back into 
the structure. The standard horizontal exhaust outlet termi-
nation is a 3 inch pipe which terminates 12 inches from the 
outside wall. The air inlet must be located with respect to 
the exhaust outlet as shown in figure 7B (bottom).

Install a 3 inch coupling at the outside wall on both the inlet 
and exhaust to prevent the terminations from being pushed 
inward. 

Install a drain tee assembly and trap in the inlet vent as 
close to the water heater as possible. This is to drain any 
water that may be in the combustion air pipe and prevent it 
from entering the blower.  Connect the trap drain line to a 
suitable drain or downstream of the condensate trap of the 
water heater.

Note: See “Venting Additional Polaris® Units” on Page 13 
for correct terminations if installing more than one Polaris® 
gas water heater.  

The combustion air and exhaust terminations may be 
raised up to 24 inches above the wall penetrations if 
required for anticipated snow levels (see figure 8B).  The 
two elbows shown in figure 8B are considered part of the 
termination and should not be included when determining 
the maximum allowable vent pipe length.

Note: See “Venting Additional Polaris® Units” on Page 13 
for correct terminations if installing more than one Polaris® 
gas water heater.