39
Venting
INSTALLATION INSTRUCTIONS
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 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 installations,
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 as listed below:
24 in. (61 cm) for a two-unit installation;
24 in. (61 cm) and 36 in. (91.4 cm) for a three-unit
installation;
24 in. (61 cm), 36 in. (91.4 cm), and 24 in. (61 cm) for
a four-unit installation.
– 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.
– 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.
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 sot vent is too close,
block o 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)
5.5”to 24 “
(14 cm to 61cm)
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)
To Next Page
Loading...
