Distance from the flue vent connector of flue pipe to combustibles chimney clearances.
Water heater vent pipe clearance to combustibles.
Fire clearances required range from 6 to 36 depending on the equipment.
Maximum horizontal section of the furnace water heater double wall vent pipe cannot be longer than 100 of the vertical vent pipe length.
Metal single wall and double 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.
Single wall vent pipes cannot pass through a ceiling floor firewall or wall.
These questions answers about fire clearance distances for gas fired heating appliance flues.
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.
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.
It will complete the information about the furnace and the water heater vent pipe clearance requirements.
Inadequate fire clearance from combustibles may not be obvious until you open a door such as our client is pointing out in this photograph.
Aluminum 020 inner wall galvanized 021 outer wall.
Home plumbing water heater water heater vent clearance to wood or combustionable materials.
6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material.
Flue vent connector clearance distances.
9 is a typical clearance between a gas fired boiler or furnace flue connector and combustibles.
Single wall vents get very hot requiring a 6 in.
For heaters vented into a metal or masonry chimney clearance distances around the chimney and chimney top including chimney top to roof.
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.
Note some modern high efficiency water heater may have pvc vents.
Typical listed and labeled double wall vent pipe clearance to combustible materials is one inch but you should always check before installation.
Fire clearance for single wall metal flue vent connectors.
1 inch or 6 inches water heater vents generally are of two types.
1 clearance to combustibles in single and multi family dwellings.
For gas fired water heater vents.
Basement finishing projects are notorious for this code violation.
