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WARNING: Improper venting of this appliance can result in excessive levels of
carbon monoxide which can result in severe personal injury or death.
This water heater must be vented in accordance with the section "Venting of Equipment" of the
latest edition of the Natural Fuel Gas Code: ANSI Z223.1, all applicable local building codes,
and Section 7 of CAN/CSA B149.1 Natural Gas in Canada, Propane Installation Code in
Canada.
This is a Category III appliance and must be vented accordingly. The vent system must be
sealed airtight. All seams and joints without gaskets must be sealed with high heat resistant
silicone sealant or UL listed aluminum adhesive tape having a minimum temperature rating of
350 ºF. For best results, a vent system should be as short and straight as possible.
1.
This water heater is a Category III appliance and must be vented accordingly with any 4"
vent approved for use with Category III or Special BH type gas vent.
2.
The manufacturer recommends the NovaVent line. However, the following are also UL
listed manufacturers: ProTech Systems Inc. (FasNSeal), Metal-Fab Inc., and Heat-Fab Inc.
(Saf-T Vent).
3.
Follow the vent pipe manufacturer's instructions when installing the vent pipe.
4.
Do not common vent this appliance with any other vented appliance. (Do not
terminate vent into a chimney. If the vent must go through the chimney, the vent must run
all the way through the chimney with Category III approved or Special BH vent pipe.)
5.
The maximum length of exhaust vent piping must not exceed 50 ft. deducting 5 ft. for each
elbow used in the venting system. Do not use more than 5 elbows.
Diameter
4"
*For each elbow added, deduct 5 ft. from max. vent length.
No. of Elbows
0
1
2
5
6.
When the horizontal vent run exceeds 5 ft., support the vent run at 3 ft. intervals with
overhead hangars.
7.
The manufacturer will not be responsible for any damage to the water heater caused by
condensation from the vent. Installing a condensate drain is recommended. Please refer
to p. 13 for the diagrams.
When installing the vent system, all applicable national and local codes must be
followed. If you install thimbles, fire stops or other protective devices and they
penetrate any combustible or noncombustible construction, be sure to follow all
applicable national and local codes.
VENTING INSTRUCTIONS
EXHAUST VENT
Max. No. of Elbows
5 Ea.
Max. Vertical or Horizontal Length
50 ft.
45 ft.
40 ft.
25 ft.
Max. Vertical or Horizontal Length
- 11 -
50 ft
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