Installation / Operation Instruction Manual

14
Optional Intake Venting
DANGER
The venting instructions must be followed to avoid restricted combustion or recirculation of flue gases.
Such conditions cause sooting or risks of fire and asphyxiation.
NOTICE
Before beginning installation of any vent pipe, read the vent pipe manufacturer’s installation instructions.
DO NOT install the water heater in any location where the ambient temperature may fall below freezing.
Water heater must be protected from freezing downdrafts during shutdown periods.
CAUTION
The vent shall terminate a minimum of 12 in (30 cm) above expected snowfall level to prevent blockage of
vent termination.
The horizontal centerline of the exhaust vent terminal (if applicable) must NOT be located lower than the
horizontal centerline of the air intake terminal if vented through the same wall.
CAUTION
A service drain loop must be installed in the drain tubing to serve as a condensate trap to prevent flue gases
from escaping into the room.
NEVER locate the air intake where exhaust gases from other appliances can be introduced into the intake.
WARNING
The intake vent system must be properly installed. Failure to properly install the vent system could result in
property damage, personal injury, or death.
Use only the vent terminals provided or factory authorized terminals for venting this water heater.
The water heater requires its own separate intake venting system.
DO NOT terminate the venting where noise from intake venting will be objectionable. This includes locations
close to or across from windows and doors. Avoid anchoring the intake vent pipes directly to framed walls,
floors, or ceilings unless rubber isolation pipe hangers are used. This prevents any vibrations from being
transmitted into the living spaces.
DO NOT exceed the venting distances or the number of elbows listed in this manual. Exceeding the
maximum venting distances may cause the water heater to malfunction or cause an unsafe condition.
DO NOT operate this water heater until the venting installation is complete and the piping completed. Failure
to complete installation before operation can result in property damage, personal injury, or death.
NOTICE
For installations in Canada, field supplied vent piping must comply with CAN/CGA B149.1 (latest edition) and
be certified to the Standard For Type BH, Class II, 65°C, Gas Venting Systems, ULC S636. Components of
this listed system shall not be interchanged with other vent systems or unlisted pipe/fittings. All components
and specified primers and cements of the certified vent system must be from a single system manufacturer
and not intermixed with other system manufacturer’s vent system parts. The supplied vent connector and vent
termination are certified under ULC S636 and are also certified as part of the water heater. Refer to the
following tables for approved venting materials, primers, and cements. All approved primers and cements are
to be used within their marked time limitations.