Clearances For Sidewall Terminations - American Water Heater 240HX3 Installation Manual And Owner's Manual

Improper installation can result in carbon monoxide poisoning or death. Follow all local and
national codes in regards to proper termination clearances. In the absence of such codes, the
clearances below can be used as guidelines. Local codes supersede these guidelines.
WARNING
1 ft
(305 mm)
min.
Exhaust
Termination
1 ft
(305 mm)
min.
Inside
corner
Combined
intake and
exhaust
1 ft
termination
(305 mm)
min.
1 ft
(305 mm)
min.
Inside
corner
For direct vent sidewall
terminations that use two
separate penetrations for the
intake and exhaust, keep the
termination clearances shown in
the diagrams on the right.
X3™ CARTRIDGE is not shown.

-Clearances for sidewall terminations-

Multiple Sidewall Terminations
An exhaust termination must be at least
1 ft (305 mm) away from another exhaust
termination. An exhaust termination must
also be at least 2 ft (610 mm) away from an
inside corner. (If the adjacent wall is less than
2 ft (610 mm) of length, the minimum required
distance away from the inside corner will be
equal to the length of that adjacent wall.)
Multiple DV Sidewall Terminations
A direct vent (DV) termination must be at least
1 ft (305 mm) away from other direct vent
terminations.
A direct vent termination must also be at least
2 ft (610 mm) away from an inside corner. (If
the adjacent wall is less than 2 ft (610 mm) of
length, the minimum required distance away
from the inside corner will be equal to the
length of that adjacent wall.)
<Case 1>
Exhaust
Intake
1 ft (305 mm)
min.
<Case 2>
Exhaust
1 ft (305 mm) min.
Intake
Exhaust
Intake
0.5 ft
(159 mm) min.
Exhaust
Intake
0.5 ft
(159 mm) min.
15
Page
Installation Manual
Installation
2 ft (610 mm)
Exhaust
min.
termination
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