The difference is that a power vent water heater pulls in combustion air from the space.
Water heater wall vent.
Water heater vent pipe clearances and restrictions.
In that installation separate intake and exhaust vent pipes are run between the water heater and interior wall and only the wall penetration and.
Instead both systems typically expel exhaust through a pipe that runs outside through an exterior wall.
A concentric vent termination may be used on a power direct vent tank or tankless water heater to get the same benefit of a single wall or roof penetration with an aesthetic vent termination.
Fip x 24 in.
Direct vent water boiler.
Direct vent water heaters.
Exhaust gases are vented outdoors through a separate vent duct or through a separate chamber of the same pipe this requires a double wall vent duct.
Gas water heater installation kit concentric vent rinnai water heater venting parts aluminum water heater venting parts wall vent guard 10 inch thimble related products 3 4 in.
Push to connect x 1 in.
The direct vent water boiler is another type of water heater venting that you should know about.
Such installation could create pyrophoric conditions and a fire hazard.
The air that is used for combustion will come from the water vent this vent will either through the roof or from the outside of the wall.