Furnace And Water Heater Venting Diagram

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Furnace and water heater venting diagram. 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. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. The conditions explained in this post also apply to the wood burning appliances. 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 vent codes standards. The lower btuh of a gas water heater compared with a heating furnace or boiler will very often be unable to heat the chimney interior sufficiently to develop a draft. The photo below shows typical combined furnace water heater venting. 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.

Bradford white water heaters may at any time and at its sole discretion change or replace the information available on the bradford white water heaters youtube channel and in the videos contained therein. 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. The venting can run either vertically or horizontally with a longer line to help with space and sizing issues within your. The old vent pipe is too large because it served both the furnace and water heater.

The blower pushes the exhaust and excess heat through the exhaust venting. In comparing the venting of exhaust gases from a high efficiency furnace boiler or water heater with the venting of exhaust gases from a conventional heating system it will be immediately obvious that the high efficiency equipment exhaust is produced at a low enough temperature that it is vented through comparably small diameter plastic piping. Consequences of improperly assembled vent pipes problematic chimney flue deteriorating chimney walls can be sometimes fatal fire and carbon. The result is a back draft of combustion products out of the water heater s draft hood and into the building.