Installation & Operation Manual
2 Venting (continued)
Terminate the venting system at least 3 feet (0.9m) above any forced air inlet within 10 feet (3.05m).
Terminate the venting system at least 4 feet (1.2m) below, 4 feet (1.2m) beside, or 1 foot (30cm) above any door, window, or gravity air inlet into any building.
Locate vent termination at least 8 feet (2.4m) horizontally from any combustion air intake located above the sidewall termination cap.
CAUTION
Units which are shut down or will not operate may experience freezing due to convective air flow in the flue pipe, through the air inlet, or from negative pressure in the equipment room. In cold climates, operate the pump continuously to help prevent freezing of boiler water. Provide proper freeze protection. See Freeze Protection, page 47.
Sidewall venting without fan
For Models 402 - 752 which are approved for sidewall venting without an external power vent fan, you must install specific vent kits and venting materials (reference Table 2C on page 24 for kit numbers).
The following is a detailed explanation of Sidewall Venting Without an External Power Vent Fan installation requirements.
Flue outlet piping
Venting Guidelines
If using this venting option, a sealed
This vent system has specific vent material and installation requirements. Only use listed sealed
Seal all vent joints and seams
Drain tee installation
A drain tee must be installed in the vent pipe to collect and dispose of any condensate that may occur in the vent system. The drain tee must be installed as the first fitting after the horizontal ell on the top of the unit (see FIG.
Figure 2-9_Sidewall Vent - Models 402 - 752 (Only)
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