Hot Water Heater Flue Pipe Clearance

Make the vent pipe section between the water heater and the chimney as short and as straight as possible.

Hot water heater flue pipe clearance.

In an attempt to maximize finished floor space when boxing off the water heater from the rest of the room people often don t leave enough clearance between the new wall framing and the vent pipes. 6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material. The water heater vent pipe is too close to combustible material and should be serviced before the close of escrow. 1 inch or 6 inches water heater vents generally are of two types.

The duct may be metal or plastic depending on the type of vent system. For gas fired water heater vents. Fire clearances required range from 6 to 36 depending on the equipment. 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.

Water heater venting basics. An exception is made for non combustible walls such as solid masonry or concrete. A vent pipe is an important part of the gas water heater maintenance don t forget your schedule. Here s an example of what i say.

Single wall vents get very hot requiring a 6 in. Basement finishing projects are notorious for this code violation. Single wall vent pipes cannot pass through a ceiling floor firewall or wall. Note some modern high efficiency water heater may have pvc vents.

Gas fired heating equipment. This construction defect is considered a fire hazard. Furnace water heater vent pipe clearance single wall. A single walled vent pipe should be six inches away from any combustible material and a double walled vent pipe should be one inch away.

The minimum distance between the single wall vent pipe and combustible materials is 6 the single wall vent pipe cannot be concealed inside the wall or floor. 9 is a typical clearance between a gas fired boiler or furnace flue connector and combustibles. Home plumbing water heater water heater vent clearance to wood or combustionable materials. The common rule is that the horizontal part of the single wall vent pipe must be equal or shorter than 75 of it s total developed height.

Even if you keep the clearances at the entrance and exit from that space whatever section is inside must be double wall type pipe.