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Space must be provided with combustion/ventilation air openings
correctly sized for all other appliances located in the same space as
the appliance. The appliance cover must be securely fastened to
prevent it from drawing air from the appliance room. This is particularly
important if the appliance is in a room with other appliances. Failure to
comply with the above could result in substantial property damage,
severe personal injury, or death.
MINIMUM CLEARANCES
Installation Clearances
from Non-
Recommended Service and Proper Operation
Combustibles /
Combustibles
Top
Back
Front
Right Side
Left Side
Table 8 – Minimum Installation and Service Clearances
NOTE: For closet installations, a combustible door or removable panel is
acceptable front clearance.
MINIMUM CLEARANCES FROM COMBUSTIBLE MATERIALS
Hot water pipes – at least 1" from combustible materials.
Exhaust vent pipe – at least 1" from combustible materials.
Always take future maintenance into consideration when locating the appliance. If the appliance is located in an installation location with
limited clearances, it may be necessary to remove the appliance from the space to perform maintenance. Failure to consider
maintenance when determining installation location could result in property damage.
E. RESIDENTIAL GARAGE AND CLOSET INSTALLATIONS
Check with your local Authority Having Jurisdiction for requirements when installing appliance in a garage or closet. Please read the
entire manual before attempting installation. Failure to properly take factors such as venting, piping, condensate removal, and wiring
into account before installation could result in wasted time, money, and possible property damage and personal injury.
PRECAUTIONS
If the appliance is located in a residential garage, it should be installed per the latest edition of the National Fuel Gas Code, ANSI
Z223.1, and CGA-B149 Installation Code in Canada.
Mount the bottom of the appliance a minimum of 18" above the floor of the garage, to ensure the burner and ignition devices
are well off the floor.
Locate or protect the appliance so it cannot be damaged by a moving vehicle.
The space must be provided with correctly sized combustion/ventilation air openings for all other appliances located in the space with
the appliance. For power venting installations using room air for combustion, refer to the venting section, this manual, for descriptions of
confined and unconfined spaces. Do not install the appliance in an attic. Failure to comply with these warnings could result in
substantial property damage, severe personal injury, or death.
F. EXHAUST VENT AND INTAKE PIPE
Vents must be properly supported. The appliance exhaust and intake connections are not designed to carry heavy weight. Vent support
brackets must be within 1' of the appliance and the balance at 4' intervals. Venting must be readily accessible for visual inspection for
the first 3' from the appliance.
Clearances
18 in. (45.7 cm)
0 in. (0 cm)
24 in. (60.9 cm)
6 in. (15.2 cm)
Figure 5 – Minimum Service Clearances
17
WHL-015 REV. 1.13.17
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