A.O. Smith FDV Owner's Manual - page 6
6
2.
Move the water heater to its final installed location. Make certain
clearances from combustible material are observed. See figure 6.
FIGURE 5
3.
Apply high temperature silicone sealant around flue extension
inside of flared end.
WARNING: IF YOU RUN OUT OF HIGH TEMPERATURE
SILICONE SEALANT, USE NATIONAL POLYMER PRO-
DUCTS, SEALCON II, RTV ADHESIVE SEALANT OR
EQUIVALENT MUST CONFORM TO MIL-A46106A TYPE 1.
DO NOT USE ANY OTHER KIND.
Place the 3 inch steel elbow on the water heater flue pipe and
press it firmly downward until sealed and pointed in the desired
direction. See figure 7.
FIGURE 6
4.
Install the 5 inch aluminum elbow over the 3 inch steel elbow.
Be certain both are pointed in the desired direction with the 3
inch centered inside the 5 inch elbow. See figure 8.
VENT CONNECTIONS
Before proceeding, refer to figure 4 for schematic of how venting
must be installed. Please note that the centerline of opening for
the vent termination must be 67-7/8" above the surface upon which
the water heater will be resting. If the heater will be placed on a
stand, be sure to measure the 67-7/8" from the level of the stand
upon which the heater will be resting.
.
FIGURE 4
After the location for the vent terminal has been selected:
1.
Cut a clearance hole, (BEWARE OF CONCEALED WIRING
AND PIPING INSIDE OF WALL), approximately 6 inches in
diameter, through the exterior wall for the 5 inches diameter air
tube. See figure 5.
Basement installations generally require an additional leg stand
kit (18" water heater stand) or a job fabricated stand to raise
the heater to the proper height for exterior venting. Outside
terminal vent cap must not be less than 12" above the ground.
In heavy snow areas, the minimum 12" clearance should be
increased accordingly.
RECOMMENDED CLEARANCE
NOT REQUIRED BY CODE.
POSSIBLE PILOT OUTAGE
IF LESS THAN 3' AND WINDY
CONDITIONS EXIST.