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FIGURE 42.
The 3” )or optional 2” or 4”) PVC, ABS or CPVC Schedule 40
vent pipe can be run from the water heater through the wall or
from the wall to the water heater, whichever is most convenient.
The vent pipe must extend a minimum of 1 1/2” through the
exterior wall. Extending the vent cap as far as possible from the
surface of the exterior wall will help minimize discoloration of
the wall in this area which may be caused by the flue gases.
NOTE: that the inside collar must be slipped over the vent
piping before locating the pipe through the wall. Before
securing the inside and outside collars to the wall, use a
silicone sealer between pipe and opening to insure a water
and air tight seal.
INSTALLATION SHOWING USE OF PVC, ABS OR CPVC PIPE
FIGURE 43.
CONNECTING PVC, ABS OR CPVC PIPE VENT TO BLOWER
• If making an immediate horizontal run of vent off the blower,
a 3” PVC, ABS or CPVC Schedule 40 (supplied locally) elbow
is required. Place the elbow in the required direction on the
blower and using 3 sheet metal screws, attach the elbow.
FIGURE 44.
• If there is to be a vertical run of vent from blower, the 3” PVC,
ABS or CPVC pipe must be attached to the blower using
3 sheet metal screws.
FIGURE 45.
• If the optional 2” vent piping is to be used (40,000 BTU/HR.
models only), the 2” street elbow, 3” to 2” reducer and
3” (minimum) section of 3” PVC, ABS or CPVC pipe must be
supplied locally. The 3” (minimum) section of 3” PVC, ABS
or CPVC pipe must be attached to the blower using 3 sheet
metal screws,
• If the optional 4” vent piping is to be used (70,000 BTU/HR.
and higher models only), the 4” street elbow, 4” to 3” reducer
and 3” minimum section of 3” PVC, ABS or CPVC pipe must
be supplied locally. The 3” (minimum) section of 3” PVC,
ABS or CPVC pipe must be attached to the blower using
3 sheet metal screws.
VENTING THROUGH A ROOF - ALL MODELS
3” PVC, ABS or CPVC Schedule 40 vent piping:
• A 3” PVC Schedule 40 - 45
o
vent cap with wire screen is
supplied with the water heater.
• 3” PVC, ABS or CPVC Schedule 40 piping and fittings are
acceptable materials for the vent system on all models and
must be supplied locally.
75 GALLON 70,000 AND 75,000 BTU/HR MODELS ONLY -
OPTIONAL 4” VENT PIPING
• A wiring screen to fit a 4” PVC, ABS or CPVC Schedule
40 - 45
o
vent cap is supplied with the water heater.
• A 3” PVC, ABS or CPVC Schedule 40 pipe, minimum length
of 3” (must be supplied locally), to make vent connection at
the blower outlet.
• A 4” to 3” PVC, ABS or CPVC Schedule 40 reducer (must be
supplied locally).