Paloma PH2-20 Direct Vent - Manual (Page 12)

Installing the water heater:
Additional Considerations
Do NOT install vent terminal under any patio or deck.
To help prevent moisture from freezing on walls and under
eaves, do not locate vent terminal on the side of a build ing with
prevailing winter winds.
To help prevent water lines from freezing, do not locate vent
terminal on the side of a building with prevailing winter winds.
Do NOT terminate vent directly on brick or masonary surfaces. A
rust resistant sheet metal backing plate (1x1 foot) (30x30 cm) is
recommended behind vent. See figure on left.
Do Not locate vent terminal too close to shrubbery, as flue gases
may damage them.
Caulk all cracks, seams and joints within six (6) feet (1.8 m) of vent
terminal.
Caulk around wall face plate for weather tight seal.
All painted surfaces should be primed to lessen the chance of
physical damage. Painted surfaces will require maintenance.
Do NOT extend exposed vent pipe of indoor water heaters outside
of building.
Guard vent against accidental contact with people and pets.
Indoor Water Heater
12
WARNING: Moisture in the flue gas will condense as it
leaves the vent terminal. In cold weather this condensate can
freeze on the exterior wall, under the eaves and on
surrounding objects. Some discoloration to the exterior of
the building is to be expected. However, improper location
or installation can result in severe damage to the structure
or exterior finish of the building
Inside
Corner
Caulk
6’ (1.8 m)
Caulk Zone
If soffit vent is too close,
block off and install new
vent at another location.
Caulk
Caulk
Rising moisture will
collect under eaves.
6’
4’ 1 ft. sq. (30 x 30 cm) sheet metal plate on
brick or masonry surface, recommended.
(1.8 m)
6’ (1.8 m)
Caulk
zone or to edge of window
etc.,starting within 6’ (1.8 m).
RTV silicone caulk
(1.2 m)
WARNING: For multiple unit installation, a minimum
distance between vent terminations must be maintained to
prevent recirculation of vent gases. Maintain a center-to-center
distance between vent terminations of 19 inches (48 cm) for two
unit installation. Maintain a center-to-center distance between
vent terminations of 21 inches (53 cm) for three or more unit
installation.