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Venting continued-
Venting System Condensation
Condensate formation does not occur in all installations of power vented heaters,
but should be protected against on installations where condensation can form in
the venting system.
Formation of condensation in the venting system of Power Vented water heaters
is dependent upon installation conditions including, but not limited to:
ambient temperature and humidity of installation location;
ambient temperature and humidity of venting space;
vent distance and slope;
and product usage.
In order to effectively control condensate from adversely affecting the mechanical
components of the water heater several methods may be employed:
1. For horizontal installations the vent pipe can be installed with a
downward slope (not less than 1/8" nor greater than ½” per foot
maximum) and away from the blower motor.
2. In order to prevent condensate from draining back into the blower (vertical
or horizontal runs), a fitting and drain hose is available as a condensate
trap kit (see Table 1 for service part numbers). The all rubber fitting with
drain outlet mounts directly to the blower motor outlet and is secured
with two hose clamps (one to the blower motor outlet and the other to the
vent connector). The plastic tubing is provided to drain any accumulated
condensate away from the water heater and to a suitable drain. The kit
comes complete with instructions for proper installation of the fitting.
Table 1
Model Service Part
2” (5.1 cm) Blower Outlet (exhaust) 239-42742-00
3” (7.6 cm) Blower Outlet (exhaust) 239-42743-00
INTERNET VERSION FOR REFERENCE ONLY