How to Guide

- If horizontal runs are necessary then they must always be sloped up at least .25" for

every foot and must be kept shorter than 75% of the total vertical length. Never termi-

nate the venting horizontally, you need the last bit of vertical run to "pull" the remain-

ing gasses that may have cooled in the horizontal run.

- If venting through the roof then the termination height will depend on your roof

pitch (consult with an HVAC tech if unsure of needed lenght). If condensation is a con-

cern for a specic installation then other more specialized materials should be used

most common is Z-Vent (double walled stainless steel on both in and outside layers).

- Fresh air intake: The room in which the heater is located must have an air inlet not less

than .75 square feet (roughly 9" x 12" or larger).

- If there are any deviations from these guidelines then please seek the help of a quali-

ed HVAC technician. Improper venting could be hazardous or even deadly.

Height determined

by roof pitch

Wind/Rain cap

Optional

condensation catch

Coupler

Exhaust Outlet

Fresh air intake

Straight Pipe

B-vent

Roof

72”min.

18”min. rise

before bends

or condensation

catch

DRAWING 05