13
INSTALLATION
VENT AND COMBUSTION AIR INLET
NOTE: This unit can be vented either as a direct vent or power
vent configuration.
NOTE: Power vent installations are Category IV.
WARNING:
DO NOT connect this water heater to an existing vent
or chimney; it must be vented separately from all other
appliances, using only approved venting materials.
WARNING:
Failure to properly vent the water heater to the outdoors as
outlined above and in the following section can result in
unsafe operation of the water heater causing bodily injury,
explosion, fire or death.
DANGER:
To avoid the risk of fire, explosion, or asphyxiation from
carbon monoxide, NEVER operate the water heater unless
it is properly vented and the vent and combustion air inlet
systems are properly installed as detailed in the "Vent and
Combustion Air-Inlet" section of this manual.
The vent and combustion air inlet pipes must overlap a
minimum of 1/2 in. (1.3 cm) at each joint. It is important that
the vent and combustion air inlet pipes engage fully into any
pipe fitting and be kept in that position until the adhesive has
fully cured. DO NOT drill or punch holes in the plastic pipe or
fittings.
NOTICE:
This unit can be vented using only the below
recommended pipe material. Use only 2, 3, or 4 inch
diameter pipe.
Refer to local codes for restrictions on the use of PVC,
CPVC, PP or ABS pipe and fittings. All exhaust venting
materials for products installed in Canada must meet ULC-
S636.
NOTE:
For the State of Massachusetts, use only plastic piping,
fittings and vent terminations as spedified in the manual
which are approved by the Massachusetts Board of State
Examiner of Plumbers and Gas for venting of appliances (see
link below):
https://licensing.reg.state.ma.us/pubLic/pl_products/pb_pre_
form.asp
PVC (DWV, ASTM-D2665 or CSA B181.2)
PVC (Schedule 40, ASTM-D1785 or CSA B137.3)
PVC (SDR Series, ASTM-D2241 or CSA B137.3)
CPVC (CPVC 4120, ASTM-D2846 or CSA B137.6)
CPVC (Schedule 40, ASTM-F441 or CSA B137.3)
CPVC (SDR Series, ASTM-F442)
ABS (Schedule 40, DWV, ASTM-D2661 or CSA B181.1)
Polypropylene
IMPORTANT
Where state and/or local codes require vent
terminations, as specified in this Use and
Care Manual to be certified to the UL 1738
Standard for Venting Systems for Gas-Burning
Appliances, Categories II, III, and IV, contact the
Manufacturer’s National Service Department (see
page 52).
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