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When the appliance is installed directly on carpeting, the appliance shall be installed on a metal or wood
Ÿ
panel extending beyond the full width and depth of the appliance by at least 3 in (76.2 mm) in any
direction or, if the appliance is installed in an alcove or closet, the entire floor shall be covered by the
panel. The panel must be strong enough to carry the weight of the heater when running.
General rules for the termination of vents:
The water heater should not be connected to the chimney flue of a separate unit used to burn solid fuel.
Ÿ
Avoid placing the water heater exhaust terminal near any indoor air intake. These fans can take the
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exhaust flue products out of the water heater and return them to the building. This can be harmful to your
health.
Locate the exhaust terminal so that it will not be blocked by any debris at all times. Most specifications
Ÿ
require the terminal to be at least 12 inches (305 mm) above grade and the expected snow level, but the
installer can determine if it should be higher based on job site conditions and applicable specifications.
CAUTION
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.
3.7 Vent Termination Clearances
D
E
B
L
Inside corner detail
G
A
B
C
B
F
B
Legend:
= Vent terminal
= Air supply inlet
= Area where terminal is not permitted
H
B
B
J
A
Installation
I
M
K
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