John Wood Envirosense Power Direct Vent (May 2010 or later) - Manuel (Page 14)

14
LOCATING THE WATER HEATER
Carefully choose a location for the new water heater. The
placement is a very important consideration for the safety of the
occupants in the building and for the most economical use of the
water heater.
Property Damage Hazard
All water heaters eventually leak. •
Do not install without adequate drainage. •
CAUTION
Whether replacing an existing water heater or installing the
water heater in a new location observe the following critical
points:
1. The water heater must be located indoors.
2. The water heater must not be located in an area where it
will be subject to freezing temperatures.
3. Locate the water heater so it is protected and not subject
to physical damage by a moving vehicle.
4. Locate the water heater on a level surface.
5. Locate the water heater near a floor drain. The water heater
should be located in an area where leakage of the tank or
connections will not result in damage to the area adjacent
to the water heater or to lower floors of the structure. When
such locations cannot be avoided, it is recommended that
a metal drain pan, piped to adequate drain, be installed
under the water heater. Drain pan should be fabricated
with sides at least 2” deep with diameter at least 2” greater
than diameter of heater. Pan must not restrict combustion
air flow.
6. Locate the water heater close to the point of major hot
water usage.
7. Locate the water heater close to a 120 VAC power supply.
See Power Supply on Page 18 for requirements.
8. Locate the water heater where an adequate supply of fresh
air for combustion and ventilation can be obtained. See
Combustion Air and Ventilation on Page 15.
9. Locate the water heater where the vent and intake air
piping, when installed, will remain within the maximum
equivalent lengths allowed. See Venting on Page 24.
10. Do not locate the water heater where noise (such as
the Combustion Blower) during normal operation will be
objectionable in adjacent areas.
11. Do not locate the water heater where the subsequent
installation of the vent (exhaust) or intake air terminations
would be objectionable due to noise at the termination(s).
This includes locations close to or across from windows
and doors. See Venting starting on Page 24.
Do not locate water heater areas where flammable liquids
(vapors) are likely to be present or stored (garages, storage
and utility areas, etc.): Flammable liquids (such as gasoline,
solvents, propane (LP or butane, etc.) and other substances
(such as adhesives, etc.) emit flammable vapors which can be
ignited by a gas water heater’s ignition device or main burner.
The resulting flashback and fire can cause death or serious
burns to anyone in the area.
Also, the water heater must be located and/or protected so it
is not subject to physical damage by a moving vehicle.
This water heater must not be installed directly on carpeting.
Carpeting must be protected by metal or wood panel beneath the
water heater extending beyond the full width and depth of the water
heater by at least 3” (7.6 cm) in any direction, or if the water heater
is installed in an alcove or closet, the entire floor must be covered
by the panel. Failure to heed this warning may result in a fire hazard.
INSTALLATION CONSIDERATIONS