15
WHL-012 REV. 12.17.14
4. Gas control system components must be protected from dripping water during operation and service.
5. If the appliance is to replace an existing appliance, check for and correct any existing system problems, such as:
System leaks
Location that could cause the system and appliance to freeze and leak.
Incorrectly-sized expansion tank
Do not connect the appliance to any heating systems or components that have been previously used for non-potable applications.
Do not introduce toxic chemicals, such as antifreeze or appliance treatments, into the appliance or any piping meant for potable water
purposes.
Ensure that all piping and components connected to the appliance are suitable for potable water applications.
Do not use this appliance only for space heating applications.
Circulators suitable for DHW applications must be used.
Failure to follow these instructions could result in property damage, personal injury, or death.
6. Clean and flush system when reinstalling an appliance.
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 appliance model and serial number.
C. LEVELING
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 appliance without removing it from the space.
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-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 appliance front cover to the removable panel or
combustible door.
MINIMUM CLEARANCES FROM COMBUSTIBLE MATERIALS
Hot water pipes
– at least 1” from combustible materials.
Exhaust vent pipe
– at least 1” from combustible materials.
In order for the condensate to properly flow out of the collection system, the appliance must be installed level. Failure to ensure the
appliance is installed level will result in improper appliance operation.
Figure 3
– Minimum Service Clearances
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