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Installing a Vent (For indoor installation only)
Installing a Vent (For indoor installation only)
Warning
• Improper venting of the water heater can result in excessive
levels of carbon monoxide, which can lead to severe
personal injury or death. This water heater must be vented
in accordance with the “Venting of Equipment“ section of
the latest edition of the ANSI Z223.1/NFPA 54 Natural Fuel
Gas Code in the USA and/or the “Venting systems and air
supply for water heaters“ section of the latest version of the
CAN/CGA B149.1 Natural Gas and Propane Installation Code
in Canada, as well as all applicable local building codes and
regulations. Follow all instructions and guidelines when
venting the water heater. Venting should be performed only
by a licensed professional.
• A water heater shall not be connected to a chimney flue
serving a separate appliance, designed to burn solid fuel.
When installed in a manufactured home(mobile home), all
combustion air shall not be supplied from occupied spaces.
The water heater must be properly vented to ensure a constant
supply of clean intake air and to ensure that exhaust air is properly
removed from living areas. When venting the water heater, follow
these guidelines:
• Do not install the water heater in areas with contaminated air
(containing a high level of dust, sawdust, sand, flour aerosols,
or any other such airborne contaminants), as contaminants can
cause operational problems. The warranty does not cover damage
caused by contaminants in the installation area. If you must install
the water heater in an area with contaminated air, use direct
venting to supply air from outside the building. We recommend
regular filter cleaning and maintenance in these areas.
• For best results, keep the venting system as short and straight
as possible.
• Locate the water heater as close as possible to the vent
termination.
• Do not connect the water heater vent to a vent for any other gas
water heater or vent stack.
• For horizontal runs, slope the horizontal section upward toward
the vent termination at a rate of 1/4" per foot (2% slope).
• Create an airtight seal at each joint in the exhaust and intake air
pipes from the water heater collar to the vent termination.
• To avoid moisture and frost build-up and to maintain clearances
to openings on adjacent homes, 45° elbows, 90° elbows, or
tees may be attached to the end of the termination vent pipe
to direct the exhaust fumes away from buildings, as long as the
restrictions on total allowable vent lengths, maximum number
of elbows, and distances to air intake are observed.
• Do not store hazardous or flammable substances near the vent
termination.
• If this water heater is to be installed in an area where snow
is known to accumulate, protect the vent termination from
blockage.
• Ensure that the vent termination is at least 12" (305mm) above
ground, or as required by local codes.
• Support the vent pipe with hangers at regular intervals or as
required by local codes.
• Exhaust and intake air pipes must be supported at least every 4
feet (1.2m).
• The vent for this appliance shall not terminate over public
walkways; or near soffit vents or crawl space vents or where
condensate or vapor could create a nuisance or hazard or cause
property damage; or where condensate or vapor could cause
damage or could be detrimental to the operation of regulators,
relief valves, or other equipment.
* If the exhaust temperature exceed 149°F (65°C), it must be vented schedule 40 or 80 CPVC or approved
polypropylene.
* For outdoor installation, please see the outdoor manual in the outdoor vent kit.
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