Rheem GHE80SS Use & Care Manual page 15

• DO NOT terminate near soffit vents or crawl space or other area where condensate or vapor could create a nuisance
hazard or cause property damage.
• DO NOT locate the exhaust vent terminal where condensate or vapor could cause damage or could be detrimental to
the operation of regulators, relief valves, or other equipment.
• DO NOT locate the exhaust vent terminal over public area or walkways where condensate or vapor can cause nui-
sance or hazard.
• DO NOT locate the vent terminal in proximity to plants/shrubs.
VENT INSTALLATION – Before proceeding, make
certain you understand the procedure and cautions
covered in the section "Joining Pipes and Fittings."
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), 4" (10.2 cm) or 6" (15.2 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.
NOTE:
Flexible PP vent kit is available for Power Vent con-
figurations, in either 3" or 4" diameters. These kits
should be used for vertical venting only.
NOTICE: Use of PVC cellular core (ASTM-F891),
ABS Schedule 40, DWV cellular core (ASTM –F628),
or Radel® (polyphenylsulfone) in non-metallic
venting systems is prohibited.
Installation
In a horizontal application, it is important that
condensate not be allowed to buildup in the exhaust
vent pipe. To prevent this from happening, 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.
Failure to properly support the vent piping with
hangers and clamps may result in damage to the
water heater or venting system.
15