Replacing B Vent With Direct Vent

Direct vent appliances use a sealed pane of glass to cover the fireplace opening relying on a co axial rigid vent pipe to both vent exhaust gases and draw combustion air for the burner assembly.

Replacing b vent with direct vent.

In direct vent appliances you use special direct vent pipe recommended by the supplier. B vent could potentially be a source of cool air into the living area if a downdraft occurs. This is what you are looking at. The difference is that a power vent water heater pulls in combustion air from the space around the appliance then uses a fan to propel the exhaust through the vent.

Of course the proper operation and placement of the logs if logs are present is assumed. One advantage to a b vent appliance however is that they are generally cheaper than direct vent units. Because the design of a b vent system is simple it is typically less expensive to install than a direct vent fireplace system. The pipe is much larger since it is a pipe insde a pipe.

Packy ma should be no problem at all. Watch the next episode https. It takes fresh air from outside thru the space around the exhaust. Some work on the cement blocks should be all you need to do.

The term vent free or ventless means that the heater can be operated without a vent or chimney. When preparing to install a type b vent pipe keep in mind that the pipe itself must be wider than the flue and the pipe should extend into the flue by at least one foot. In this video i start my diy fireplace by installing a flexible direct vent system through the wall behind the fireplace. A type b vent pipe functions to remove potentially harmful gases and fumes that build up in a heating system by channeling them out of a room.

The flames that emit from the gas burner are intended to burn unobstructed. Replacing power vent with direct vent water heater. A direct vent system pulls in.