Gas Water Heater Exhaust Code

The first permit is for the water heater itself.

Gas water heater exhaust code.

Well making sure that you choose the right venting style will protect them. 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. 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.

The process of burning of the gas is called combustion and it creates heat exhaust gases including highly poisonous carbon monoxide and moisture the water heater s ventilation system removes these byproducts from the home making it a critical safety feature. 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. 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. The different types of venting.

How much does a water heater permit cost. This article series describes proper ventilation details for handling the exhaust from gas fueled water heaters both lpg or propane and natural gas. 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. With a replacement high efficiency furnace the existing vent pipe does not work for water heater only because the vent is too large.

All water heaters that burn natural gas or liquid propane lp gas require a venting system. You re only looking at 20 to 100 out of pocket as opposed to several hundred dollars to call in a plumber. 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. The photo below shows typical combined furnace water heater venting.

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. When installed correctly this venting arrangement works with an 80 gas furnace or lower than 80 gas water heater. For sizing a gas vent connected to two appliances with draft hoods the effective area of the vent shall.