A.O. Smith T-H3M-DV Installation Manual And Owner's Manual page 19

2 ft (610 mm)
min
<For rooftop terminations>
2 ft (610 mm) min.
Intake air
A:Exhaust terminations must be at least 1 ft
B:Intake terminations must be at least 1 ft
Please follow all local and national codes in regards to proper termination
clearances In the absence of such codes, the clearances above can be used as
guidelines Local codes supersede these guidelines
CAUTION
Exhaust and/or direct-vent sidewall terminations should
be at least 2 ft (610 mm) away from an opposite surface/
wall Do not place the termination directly in front of an
opening into a building
Exhaust
termination
B
B
Exhaust
Gas A
19

3 ft (914 mm) min.
Exhaust gas
Intake air
B
 (305 mm) away from any obstructions
 (305 mm) away from any obstructions
Page
Installation Manual
Installation
A