Rheem GHE80SS Use & Care Manual page 24

WARNING
!
These instructions are intended as an aid to qualified
service personnel for proper installation, adjustment,
and operation of this kit. Read these instructions
thoroughly before attempting installation, adjustment,
or operation. Failure to follow these instructions can
result in improper installation, adjustment, service,
or maintenance possibly resulting in fire, electrical
shock, property damage, personal injury, or death.
WARNING
!
This kit is to be used only for vent & combustion
air-inlet termination for power direct vent gas
water heaters. DO NOT use this kit to terminate
any other type of appliance. Failure to follow this
warning could result in fire, personal injury, or
death.
LOCATION: The Concentric Vent & Combustion Air-Inlet
Termination Kit can be installed in a horizontal or
vertical (roof) orientation. Before installation
procedures begin, determine the best location for
the termination kit.
IMPORTANT: When installing the kit, consider the
following when choosing a location:
• Kit is positioned where vent gases will not
damage nearby structure.
• Kit is positioned so that wind will not cause
combustion products, leaves, snow, or other
debris to enter the combustion air-inlet.
• Kit is positioned where it will not get damaged
by foreign objects (i.e.: balls, stones, etc.).
• Kit is positioned where vent gases will not be
inhaled or cause a nuisance.
NOTE: Ensure that the heights of the vent and/or
combustion air-inlet openings are at least 12"
above the anticipated snow level.
HORIZONTAL INSTALLATION
STEP 1:
Cut the proper size opening (see "D" in chart) in
the sidewall and install the field supplied weather-
seal boot/flashing for PVC pipe.
STEP 2:
From inside, insert the combustion air-inlet pipe
through the seal boot so that a maximum of 1"
clearance occurs between the outside wall and the
rain cap fins (See Figure 16). Ensure that no insula-
tion or debris accumulate in the pipe.
Combustion
Field Supplied
Air-Inlet to
Strap
Water Heater
Exhaust
Vent from
Water
Heater
Figure 15
Installation
STEP 3:
STEP 4:
Note: If field disassembly is desired for cleaning, a
STEP 5:
STEP 6:
VERTICAL INSTALLATION
STEP 1:
1" Maximum
STEP 2:
Min. of 12" (30.5
cm) above grade
or anticipated
snow level.
24
Secure the combustion air-inlet pipe using a field
supplied perforated strap or a suitable type
material (see Figure 16).
Assemble the vent pipe assembly by cleaning and
cementing the rain cap to the smaller diameter
vent pipe.
Vent Pipe Assembly
Figure 17
stainless steel screw may be used to secure the
rain cap to the PVC vent pipe.
WARNING
!
When using the alternate screw method, pre-drill
a clearance hole in the rain cap slightly larger
than the screw and a pilot hole in the vent pipe to
prevent cracking of the PVC pipe. Cracking of the
PVC components will cause a failure of the
system, allowing combustion products to be
recirculated. Failure to follow this warning could
result in personal injury of death.
WARNING
!
DO NOT operate the water heater with the rain cap
and elbow removed or recirculation of combustion
products may occur. The vent and combustion air-
inlet systems may also take in water, causing
damage to the water heater. Failure to follow this
warning could result in damage to the unit,
improper operation, personal injury, or death.
From the outside, slide the vent pipe assembly
through the combustion air-inlet pipe and cement
the rain cap to the combustion air-inlet pipe. From
the inside, cement the "Y" fitting to the combustion
air-inlet pipe (see Figure 16 & 17).
Complete the installation of the remainder of the
vent and combustion air-inlet systems as required
in this manual.
Cut a proper size opening (see "D" in chart) in the
roof, and install field-supplied weather-seal boot/
flashing for the larger PVC pipe.
From inside, insert the larger diameter combustion
air-inlet pipe up through the seal boot, ensuring that
no insulation or debris accumulate in the pipe. Ensure
termination height is above the 12" minimum
clearance anticipated snow level.