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Venting continued-
Venting System Condensation
Condensate formation does not occur in all installations of pow er vented
w ater heaters, but should be protected against on installations w here
condensation can form in the venting system.
Formation of condensation in the venting system of Pow er Vented w ater
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 w ater heater several methods may be
employed:
1. For horizontal installations the vent pipe can be installed w ith a
dow nw ard slope (not less than 1/8" (3 cm)) and aw ay from the
blow er.
2. In order to prevent condensate from draining back into the blow er
(vertical or horizontal runs), an optional condensate kit is available
as a service part (Condensate kit, p/n 239-45875-00). A factory
supplied exhaust adapter w ith drain outlet mounts directly t o the
blow er outlet and is secured w ith tw o hose clamps, one to the
blow er and the other to the vent pipe. Tubing is provided to drain
any accumulated condensate aw ay from the w ater heater and to a
suitable drain. The kit comes complete w ith instructions for proper
installation.
Part I - Venting Specifications for:
48 Gallon (181.6 L)
65 Gallon (246.0 L)
This w ater heater is a pow er vented appliance and is designed to vent its
products of combustion through 3'' (7.6 cm) or 4'' (10.2 cm) diameter
vent pipe to the outdoors. This w ater heater may be either vented
horizontally through the w all or vertically through the roof. Use a 3'' (7.6
cm) to 4'' (10.2 cm) reducer to connect to the vent outlet w hen using 4''
(10.2 cm) vent pipe. Apply the proper cement at the joint locations. Table
1 lists the maximum vent lengths for this w ater heater using 3'' (7.6 cm)
vent pipe. If possible, locate the w ater heater so that the venting length
and number of elbow s are kept to the minimum distance necessary to
reach the outside. If the installation requires venting lengths that exceed
the lengths listed for 3'' (7.6 cm) vent pipe in Table 1, then use 4'' (10.2
cm) vent pipe for the vent connector.
12
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