Rheem RTGH Owners Manual

43
INSTALLATION INSTRUCTIONS
Horizontal Vent Installation (cont.)
Fasteners will vary depending on the wall type.
For particle board or
composite sheathing, use
4 hollow wall anchors. The
anchors should be at least 1/8
in. (0.3 cm) in diameter and
the appropriate length for the
sheathing thickness.
For plywood or solid wood
sheathing or members, use 4
#10 x 1 1/4-in. wood screws.
For masonry walls, use
suitable masonry anchors
long enough to pass through
the wall.
NOTICE:
• The exhaust vent terminal must extend a minimum of 12
inches (30.5 cm) more than the air intake terminal from
the exterior wall. Also, an edge to edge distance between
an air intake termination and an exhaust termination
shall be at least 12 inches (30.5 cm) for any directions to
prevent recirculation of vent gases.
• To prevent possibility of condensate freeze-up, DO NOT
install vent kits one above the other.
Once the vent terminal location has been determined,
make holes through the exterior wall to accommodate
the vent pipes. Vent pipes must exit exterior wall
horizontally only.
The standard horizontal air intake termination is a 2-inch
or 3-inch 90 degree elbow. This prevents rain or any
other liquid for getting into air intake and the pipe from
being pushed back into the structure. The standard
horizontal exhaust outlet termination is a 2-inch or 3-inch
pipe which terminates 12 inches from the air intake
termination. Insert a small length of vent pipe through
the wall and connect the coupling. Connect vent cap or
terminal to the vent pipe on the exterior of the building.
1. Observe minimum clearances. Vent terminals must be
a minimum of 5.5 inches (14 cm) and a maximum of
24 inches (61 cm) apart horizontally.
2. Cut two 2 1/2” (6.4 cm) diameter holes [for a 2” (5.1
cm) diameter pipe] or 3 1/2” (8.9 cm) diameter holes
[for a 3” (7.6 cm) diameter pipe] for the exhaust vent
and air intake openings.
Apply silicone sealant or silicone/latex caulk to seal
the vent pipe to the vent coupling to permit field
disassembly for annual inspection and cleaning.
Completely seal where it passes through the wall plate
and where it is attached to the structure.
Attach the female end of the next vent pipe section to
the male end of the 2-in./3-in. (5.1-cm/7.6-cm) vent pipe.
See “Cementing Joints” on this Use and Care Manual.
Insert a 2" PVC pipes slowly into an air intake connector
and a flue connector located on top of the water heater
until they stop. DO NOT use cement. Tighten 2 locking
bands to secure 2" PVC pipes.
Complete the rest of the vent pipe installation to the
water heater's flue outlet and air intake.
1
4
2
Venting
3
2” PVC pipes
Locking bands