Instructions / Assembly
39
INSTALLATION INSTRUCTIONS
Venting
Horizontal Vent Considerations
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.
– Do not install vent terminals under any patio or
deck.
– Do not locate vent terminal on the side of a
building with prevailing winter winds. This will
help prevent water lines from freezing and
moisture from freezing on walls and under
eaves.
– Do not locate vent terminal too close to
shrubbery, since flue gases may damage them.
– All painted surfaces should be primed to
lessen the chance of physical damage. Painted
surfaces will require maintenance.
– Guard against accidental contact with people
and pets.
INDOOR TANKLESS WATER
HEATERS
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 each pair of vent
terminations of 24 in. (61 cm) for a two-unit
installation; 24 in. (61 cm) and 36 in. (91.4 cm) for
an installation of three units; and 24 in. (61 cm),
36 in. (91.4 cm), and 24 in. (61 cm) for an
installation of four units.
– Do not terminate vent directly on brick or
masonry surfaces. Use rust-resistant, sheet-
metal backing plate of 1 sq. ft. (30 sq. cm)
behind the vent.
– Caulk all cracks, seams, and joints within
6 ft. (1.8 m) of the vent terminal.
– Caulk around wall faceplate for weather-tight
seal.
– Do not extend exposed vent pipe of indoor
water heaters outside of the building.
– This water heater requires its own separate
venting system. Do not connect the exhaust
vent to an existing vent pipe or chimney.
OUTDOOR TANKLESS WATER
HEATERS
– Install outdoor water heater such that air inlet
and flue outlet are above anticipated snow level.
Rising moisture will collect under eaves.
Inside
Corner
Caulk
Caulk
Caulk
Caulk
If soft vent is too close,
block off and install new
vent at another location.
6' (1.8 m) Caulk zone or
to edge of window etc.,
starting within 6' (1.8 m)
4'
(1.2 m)
Rising moisture will collect under eaves.
Inside
Corner
Caulk
Caulk
Caulk
If soft vent is too close,
block off and install new
vent at another location.
6' (1.8 m) Caulk zone
or to edge of window
etc., starting within
6' (1.8 m)
4'
(1.2 m)
12"
(300 mm)