American Water Heater DCG - Manual (Page 5)

5
Clearances and Accessibility
Notice: Minimum clearances from combustible
materials are stated on the data plate located on the
front of the water heater.
• If the water heater is installed in a restaurant
or food service location where the floor is
cleaned frequently, NSF International requires
the water heater to maintain 6 inches (150mm)
of clearance above the floor. To comply with the
NSF International requirement, install leg
extension kit. For availability contact
1-800-456-9805
• The water heater is certified for installation on a
combustible floor.
Important: If installing over carpeting, the carpeting
must be protected by a metal or wood panel beneath
the water heater. The protective panel must extend
beyond the full width and depth of the water heater by
at least 3 inches (76mm) in any direction, or if in an
alcove the entire floor must be covered by the panel.
The panel must be strong enough to carry the weight of
the water heater when full of water.
Figure 1 may be used as a reference guide to locate
the specific clearance locations. A minimum of 24
inches (610mm) of front clearance and 4 inches
(102mm) on each side should be provided for inspection
and service.
Figure1: Minimum Clearance Locations Important:
The water heater should be located in an area where
leakage of the tank or connections will not result in dam-
age to the area adjacent to the water heater or to lower
floors of the structure. Due to the normal corrosive
action of the water, the tank will eventually leak after
an extended period of time. A suitable metal drain pan
should be installed under the water heater as shown
below, to help protect the property from damage which
may occur from leaks in the piping connections or tank.
The pan must limit the water level to a maximum depth of
1 3/4 inches (45mm) and be 2 inches (51mm) wider than
the water heater and piped to an adequate drain. The
pan must not restrict combustion airflow. Locate the
water heater near a suitable indoor drain. Outside drains
are subject to freezing temperatures which can obstruct
the drain line. The piping should be at least 3/4” (19mm)
ID and pitched for proper drainage. Under no circum-
stances will the manufacturer or seller of this water heater
be held liable for any water damage which is caused by
your failure to follow these instructions.
1 3/4” Max
Pipe to
adequate
drain
At least 2” greater than the
diameter of the water heater
Vent
Top to
ceiling
Sides
Front 24” min.
for service
Sides
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