Designed for installations where atmospheric units cannot be used. Exhaust gases are vented under positive pressure directly out of the building through the roof or the wall with PVC, ABS or CPVC.
This water heater is a power vented appliance and is designed to vent its products of combustion through 3" or 4" diameter vent pipe to the outdoors. This water heater may be either vented horizontally through the wall or vertically through the roof.