Direct Vent System Installation (199,999 and 150,000 Btu/hr. input models)
WARNING
The direct vent system must be properly installed. Failure to properly install the direct vent system could result in property damage, personal injury or death.
The water heater requires its own separate venting system. Do not connect the exhaust vent into an existing vent pipe or chimney.
CAUTION
Do not install any damaged direct vent system components. Contact the manufacturer of the water heater for replacement parts. Use only the vent terminals provided or factory authorized for venting this water heater. The flow of combustion air must not be restricted. Keep the direct vent terminal openings clear of objects, shrubs, snow and debris.
This water heater is a power direct vent appliance and is designed to vent both its products of combustion and provide the combustion air supply through 3” (7.6 cm) or 4” (10.2 cm) diameter pipe to the outdoors. This water heater may be vented either through the wall or vertically through the roof. The blower outlet adaptor provided in the vent kit carton and combustion air inlet connection are designed to fit 3” (7.6 cm) diameter pipe. Remove the exhaust vent adaptor and gasket from the vent kit carton. Line up the gasket screw clearance holes with the vent adaptor flange and place on top of the blower outlet flange. Assemble the adaptor with the gasket to the blower outlet using the four (4) nuts, bolts, and washers provided in the kit.
If 4” (10.2 cm) diameter pipe is used, a bell reducer must be used at the blower outlet and air intake connections. Seal the joint between the pipe and the blower outlet collar (See figure 4). Table 1 lists the maximum vent lengths for this water heater using 3” (7.6 cm) diameter pipe. If possible, locate the water heater so that the venting length and number of elbows are kept to the minimum distance necessary to reach the outside. Use the 3” (7.6 cm) vent and intake air terminals supplied with the water heater to terminate on the outside of the building. When using 4” (10.2 cm) diameter pipe, optional 4” (10.2 cm) diameter vent terminals must be used and are available from your dealer. Refer to the venting illustrations on the following pages. Make sure the exhaust vent pipe terminal rear edge is at least 6” (15.2 cm) away from the edge of the wall (see figure 5).
Figure 4
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