Bradford White IGI-180R-10N - Manual (Page 24)

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Horizontal Direct Vent using standard vent kit components:
Figure 8
For installations on interior walls, venting components may be purchased from your Bradford White
supplier to extend the venting distance using extension tubes and elbows. Use the formula and venting
table shown previously in this installation manual to calculate the total equivalent distance of vent pipe.
Do not exceed the maximum of 41 equivalent feet (12.5 m). If the height of the vent pipe is extended 5
feet (1.5 m) or more above the top of the water heater, then a condensate collector must be used. Refer
to the parts list at the end of this instruction manual and the Venting System Installation Instructions
supplied with the water heater for available venting components and detailed instructions on fitting the
components together.
Horizontal Direct Vent using extension components for longer vent runs:
Figure 9