17
WHL-032 REV. 6.2.16
D. CLEARANCES FOR SERVICE ACCESS
See Figure 3 and Table 6 for recommended service clearances. If these minimum clearances are not provided, it may not be possible
to service the boiler without removing it from the space.
Space must be provided with combustion/ventilation air openings correctly sized
for all other boilers located in the same space as the boiler. The boiler cover must
be securely fastened to prevent it from drawing air from the boiler room. This is
particularly important if the boiler is in a room with other boilers. Failure to comply
with the above could result in substantial property damage, severe personal
injury, or death.
MINIMUM CLEARANCES
Installation Clearances from Non-
Combustibles / Combustibles
Recommended Service and Proper
Operation Clearances
Top
18 in. (45.7 cm)
Back
0 in. (0 cm)
Bottom
12 in. (30.45 cm)
Front
24 in. (60.9 cm)
Right Side
3 in. (7.6 cm)
Left Side
Table 6
– Minimum Installation and Service Clearances
NOTE:
For closet installations, a combustible door or removable panel is acceptable
front clearance.
A 3” minimum clearance must be provided from the boiler front cover to the removable panel or combustible door.
NOTE:
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 boiler. If the boiler is located in an installation location with limited
clearances, it may be necessary to remove the boiler 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 boiler in a garage or closet. Please read the entire
manual before attempting installation. Failure to properly take factors such as boiler 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 boiler 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 boiler
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 boiler 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 boiler. For power venting installations using room air for combustion, refer to the boiler venting section, this manual, for descriptions
of confined and unconfined spaces. Do not install the boiler in an attic. Failure to comply with these warnings could result in substantial
property damage, severe personal injury, or death.
Figure 3
– Minimum Service Clearances
