Gas Water Heater Chimney Requirements

With a replacement high efficiency furnace the existing vent pipe does not work for water heater only because the vent is too large.

Gas water heater chimney requirements.

Natural draft gas water heater vent pipe pitch. 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. Carpentry although you won t be working with wood you need to be familiar with levels to ensure a level base and may need to anchor pipes to ceiling beams. Smith power vent gas water heaters are equipped with an electric blower fan that is installed on top of the water heater which requires an electrical outlet to be close to the water heater.

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. Some installation might be a significant challenge or even become impossible due to a water heater height and chimney flue. The venting can run either vertically or horizontally with a longer line to help with space and sizing issues within your. Illustrations of proper gas fired water heater venting using type b double wall vent pipe through a roof above or through a chimney below include details for the flue vent connector such as the requirement of a minimum vent connector upwards slope of 1 4 per foot of horizontal run.

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. Proper furnace water heater venting is an extremely important issue which depends on the performance of the house chimney chimney flue or other exhaust assemblies. Electrical even gas water heaters have electrical parts and need to be hooked up to your breaker box.

When installed correctly this venting arrangement works with an 80 gas furnace or lower than 80 gas water heater. Gas water heater vent pipe connector must continuously run upward towards the chimney entrance rising not less than 1 4 per linear foot to provide proper draft. The blower pushes the exhaust and excess heat through the exhaust venting. The conditions explained in this post also apply to the wood burning appliances.

For safety water heaters must be vented using a listed and approved venting system that provides adequate size height and draft. Consequences of improperly assembled vent pipes problematic chimney flue deteriorating chimney walls can be sometimes fatal fire and carbon.