Paloma PHH-32 part 2 - Manual (Page 5)

41
Venting
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.
NOTICES:
• The distance between the back edge of the
exhaust vent terminal and the exterior wall must
be 12 inches (30.5 cm) more for the exhaust vent
terminal than the air intake terminal.
• 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 pipe which terminates at the
exterior wall and uses a coupling to prevent 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. Use the vent plate as a template to locate air
intake holes and four mounting holes. 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.
Reinstall the decorative sheathing around the
faceplate. The decorative sheathing may be
painted to match the exterior decor.
Apply silicone sealant or silicone/latex caulk to
seal the vent pipe to the vent cap 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 page 40.
Complete the rest of the vent pipe installation to
the water heater’s flue outlet and air intake.
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