Venting Gas Water Heater Through Wall Code

These questions answers about codes standards for venting gas fired water heaters were posted originally at gas fired water heater venting be sure to review the codes and standards given there.

Venting gas water heater through wall code.

Direct vent chimneys fireplaces. 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. Colour illustration of direct vent sidewall terminal clearance distances adapted from american standard furnace installation instructions that in turn cites ansi z223 1 nfpa 54 national fuel gas code for us installations and cites csa b149 1 natural gas and propane installation code for canadian direct vent gas vent installations. I recently inspected a split level home with a utility room that includes a 90 efficiency furnace and an electric water heater.

And if he vents it through a side wall what would be the considerations. These vents must be made of suitable materials and be kept clear of combustible materials. The vent system for a gas fired water heater must be installed according to local and state codes or in the absence of local or state codes the current edition of the national fuel gas code ansi z223 1 nfpa 54 link to 2012 edition. Proper venting gas and propane heaters emit carbon monoxide which must be vented outside.

For safety water heaters must be vented using a listed and approved venting system that provides adequate size height and draft. When the vent is withdrawing air from the house it expels the gas outside through the vent. Guide to choosing installing troubleshooting through wall or side wall venting exhaust devices for heating appliances like oil or gas fired boilers furnaces or water heaters photos examples of sidewall venting or direct venting installations that are improper and or. The california water heater code is part of a.

Likely it would have to be some specific minimum distance from any. Atmospheric venting refers to a system in which exhaust from the water heater naturally rises out of the appliance s combustion chamber then travels up through a standard chimney style flue. The question is does it have to vent through the roof. The buyer wants to replace the electric water heater with gas.

The direct vent water boiler is another type of water heater venting that you should know about. Also known as the type b this vent is operating on the natural air convection. Sidewall vent direct vent direct exhaust systems for oil or gas fired heaters. Electrical even gas water heaters have electrical parts and need to be hooked up to your breaker box.

With a direct vent system air for combustion is drawn from a vent pipe that runs through an exterior wall or the roof. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner.