American International PG10*50-199-3NV or 3PV Manual Do Utilizador

13

For inputs of 175,000 BTU/Hr or greater, all termination pip-
ing and fittings are 3”.  Do not reduce before penetrating 
the wall.

The vertical inlet air termination requires a return bend or 
two short or long sweep radius 90° elbows to keep the inlet 
downward and prevent entry of rain. These elbows are con-
sidered part of the termination and should not be included 
when calculating the maximum allowable vent pipe length. 
Refer to figure 9B for the proper location of the air inlet 
with respect to the exhaust outlet termination. The vertical 
exhaust outlet termination is a 3 inch pipe which terminates 
at least 12 inches above the inlet air termination.

The air inlet and exhaust outlet terminations must be at 
least 12 inches above the roof line or anticipated snow 
levels as shown in figure 9B below.

Note: See “Venting Additional Polaris

®

 Units” below if 

installing more than one Polaris

®

 gas water heater.  

 

When using two (2) Polaris® units, install vent terminations 
using either Method A or Method B below:

When using three or more Polaris® units, install vent 
terminations per Method C or Method D: