heater should be installed as close as possible to a chimney or vent, and
in a place not exposed to freezing, rain or other poor weather conditions.
Type B (double walled vent pipes) or Stainless Steel Venting pipes must be
Fig.3Diagram of water and gas installation
as well as exhaust venting.
Venting Above A Door
Venting Above A Window
Double Walled Type B or Stainless Steel Vent Pipes