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FRESH
COMBUSTION
AIR IN
SCREW
Figure 16
Be sure venting is properly connected to prevent escape
of dangerous flue gases which could cause deadly
asphyxiation.
DV TERMINATION SAFETY COVER
When the heater is in operation the vent termination hood
will be hot (see Figure 16).
A Safety cover (see Figure 17) is available to prevent
accidental contact with the vent terminal. Contact your
Customer Service Department for ordering information.
Figure 17
Alternatively, a wire mesh or louvered fencing guard can
be built around the termination as shown in Figure 18.
HOT
EXHAUST
GAS OUT
VENT CONNECTIONS
After the location for the vent terminal has been selected
as outlined in Figure 6 & Figure 15, use the following
illustrations for installation:
LOCATING CLEARANCE HOLE FOR VENT
Cut a clearance hole, approximately 7" in diameter, through
the exterior wall for the vent assembly. The recommended
height is 64" for 40 gal. models, 73" for 50 gal. models
and 74" for 50 gal. Hi-Input models, as measured from
the hole center to bottom of water heater. Where the
wall is combustible and the wall thickness is over 14" , 1"
clearance to combustible surfaces around the vent terminal
is needed. The fi rst 14" is zero clearance (see Figure 21).
STANDARD VENT ARRANGEMENT
* If the horizontal length of the venting is less than 30"
the restricter plate must be installed (see Figure 22, Figure
28 thru Figure 30).
•
Do not use the restricter plate in an offset installation
(see Figure 26).
•
Do not use the restricter plate the horizontal length of
the venting is greater than 30" .
Note: The length of "unstretched" corrugated tube could
cause the length of the vent run to exceed the minimum. In
this case cut off a piece of the corrugated tube to achieve
the 17" minimum vent length.
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Figure 18
23
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