Bradford White EVERHOT IGI-180C Series Installation And Operating Instruction Manual page 26

Horizontal Direct Vent using extension components for longer vent runs:
Fig. 6
Vertical Direct Vent Installations
The EVERHOT® IGI series water heater can also be installed to vent vertically through the roof using a
vertical discharge adaptor, optional vent extension tubes, a condensate collector, a roof terminal, and a
universal lead tile. In addition to the total equivalent feet limit of 41 feet (12.5 m), the maximum height of
the venting system is limited to 21 feet (6.4 m). A condensate collector is required on all vertical venting
heights over 5 feet (1.5 m). Determine the distance in height required from the water heater and order
the vent extension pipes required.
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