Gas Water Heater Exhaust Code

The different types of venting.

Gas water heater exhaust code.

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. Code expert glenn mathewson describes 10 common water heater code issues including confusion about drip pans and drains unsupported expansion tanks and plastic vents lack of combustion air and more. Water heater shall be of the direct vent type. With a replacement high efficiency furnace the existing vent pipe does not work for water heater only because the vent is too large.

This article series describes proper ventilation details for handling the exhaust from gas fueled water heaters both lpg or propane and natural gas. Installing a tank water heater might seem easy but homeowners who refinish their basements often create a number of code violations with respect to the water heater. This is as easy as heading down to the local planning or building department to ask for one. The photo below shows typical combined furnace water heater venting.

Well making sure that you choose the right venting style will protect them. When we are talking about gas furnace vent pipe code we need to talk about the different types of the vents first after all you want to keep your family safe from harm. 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. Gas appliance direct vent clearances distances from direct gas vent to building features sidewall vent direct vent direct exhaust systems for gas fired heaters water heaters other appliances.

You re only looking at 20 to 100 out of pocket as opposed to several hundred dollars to call in a plumber. The natural gas fueled water heater shown at page top is improperly vented lacking the recommended minimum 12 of vertical rise before the elbow and vented directly into a large masonry flue. For sizing a gas vent connected to two appliances with draft hoods the effective area of the vent shall. The first permit is for the water heater itself.

How much does a water heater permit cost. All water heaters that burn natural gas or liquid propane lp gas require a venting system. Table illustrations of the required space between a direct or side wall vent for a gas fired heating appliance and building windows doors corners gas meter air intakes sidewalks balconies.