14
WHL-060 REV. 1.6.16
5. If the water heater is to replace an existing water heater, check for and correct any existing system problems, such as:
System leaks
Location that could cause the system and water heater to freeze and leak.
Incorrectly-sized expansion tank
Do not connect the water heater to any heating systems or components that have been previously used for non-potable applications.
Do not introduce toxic chemicals, such as antifreeze or water heater treatments, into the water heater or any piping meant for potable
water purposes.
Ensure that all piping and components connected to the water heater are suitable for potable water applications.
Do not use this water heater for space heating applications.
Circulators suitable for DHW applications must be used.
6. Clean and flush system when reinstalling a water heater.
NOTE:
When installing in a zero clearance location, it may not be possible to read or view some product labeling. It is recommended to
make note of the water heater model and serial number.
B. LEVELING
C. CLEARANCES FOR SERVICE ACCESS
See Figure 3 and Table 8 for recommended service clearances. If these minimum clearances are not provided, it may not be possible
to service the water heater without removing it from the space.
Space must be provided with combustion/ventilation air openings correctly sized
for all other water heaters located in the same space as the water heater. The
water heater cover must be securely fastened to prevent it from drawing air from
the water heater room. This is particularly important if the water heater is in a
room with other water heaters. 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 8
– 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 appliance 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 water heater. If the water heater is located in an installation
location with limited clearances, it may be necessary to remove the water heater from the space to perform maintenance. Failure to
consider maintenance when determining installation location could result in property damage.
In order for the condensate to properly flow out of the collection system, the water heater must be installed level.
Figure 3
– Minimum Service Clearances
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