Rheem GHE100-130 Use & Care Manual page 16

POWER VENT INSTALLATION:
Power venting is where the indoor air is used and the exhaust is vented
to the outside. Venting may be run horizontally through an outside wall
or vertically through a roof through using either 2" (5.1 cm), 3" (7.6
cm) or 4" (10.2 cm) diameter PVC, ABS or CPVC. This water heater
is supplied with a screened intake elbow and exhaust coupling referred
to as the air intake terminal and the exhaust vent terminal
In a horizontal application, it is important that condensate not be
allowed to buildup in the exhaust vent pipe. To prevent this from hap-
installation
pening, the pipe should be installed with a slight upward slope of ¼"
per foot. The vent system must be supported every 5 feet of vertical
run and every 3 feet of horizontal run of vent pipe length.
CAUTION
!
Failure to properly support the vent piping with hangers and clamps
may result in damage to the water heater or venting system.
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