Water Heater Vent Pipe Clearance To Combustibles

Maximum horizontal section of the furnace water heater double wall vent pipe cannot be longer than 100 of the vertical vent pipe length.

Water heater vent pipe clearance to combustibles.

3 16 diameters feature twist lock fittings screws required for 14 and larger diameters. These questions answers about fire clearance distances for gas fired heating appliance flues. Fire clearances required range from 6 to 36 depending on the equipment. Distance from the flue vent connector of flue pipe to combustibles chimney clearances.

6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material. Indoor fire clearances for flues vent connectors and vents were posted originaly at fire clearances single wall metal flues vents please be sure to check the distances given there. For heaters vented into a metal or masonry chimney clearance distances around the chimney and chimney top including chimney top to roof. Round type b gas vent 18 3.

Fire clearance for single wall metal flue vent connectors. Note some modern high efficiency water heater may have pvc vents. Inadequate fire clearance from combustibles may not be obvious until you open a door such as our client is pointing out in this photograph. Furnace water heater vent pipe clearance double wall.

1 inch or 6 inches water heater vents generally are of two types. 9 is a typical clearance between a gas fired boiler or furnace flue connector and combustibles. Flue vent connector clearance distances. Basement finishing projects are notorious for this code violation.

Aluminum 020 inner wall galvanized 021 outer wall. Single wall vent pipes cannot pass through a ceiling floor firewall or wall. 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. 1 clearance to combustibles in single and multi family dwellings.

Some have 0 some have 1 2 and others have 1 clearance around combustibles also some say do not insulate as the temperature will damage the pipe and some say to insulate if it passes through a unheated space others say only leave the first 3ft exposed and must be cpvc. Metal single wall and double wall. Typical listed and labeled double wall vent pipe clearance to combustible materials is one inch but you should always check before installation. Single wall vents get very hot requiring a 6 in.

Most common gas vent if you are using a b vent typically a double walled air insulated vent for gas appliances typically you ll see a fire clearance stamped right into the metal of the chimney stating 1 inch minimum clearance to combustibles as you ll see in this photo.