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Sep 17, 2005 · The B-vent was installed inside the chiminey by a previous HVAC contractor (probably) because gas furnaces should not be vented directly into a chiminey (flue gases are …

The B vent on the hot water heater terminates inside the masonry chimney. There is NO pipe going up to the B vent that has been tied into the existing chimney. The chimney company told …

It takes aprox. 50,000 btu's to heat up a "properly" sized masonry chimney to 120 degrees whereas venting through a aluminum liner (making a comparison between masonry chimney …

Feb 16, 2021 · A fan-assisted category 1 appliance listed for use with a B-vent cannot typical vent into a clay-lined chimney, but can vent into a masonry chimney lined with an approved liner …

Sep 6, 2006 · I'm working on new venting for a gas furnace and hot water heater through an existing unlined masonry chimney. Appliances are in the basement of a two story home, so …

Nov 10, 2020 · For many years, my water heater simply vented into a brick chimney in the middle of the house, but I have removed the stack to close in the roof. Now I am running 20 feet (four …

Type B-vents are double-walled metal chimneys/flues and can be used only with listed, draft-hood equipped gas appliances. Type B gas vents such as the Ameri-Vent™ are permitted for venting gas-fired appliances and have their own set of combustible clearance …

Water heater and furnace/boiler can no longer vent into a clay lined masonry chimney. Chimney must be relined with a listed liner meeting UL 1777 or with a “B-Vent” or both appliances can …

Is it possible to just add a metal "B-vent" chimney directly on top of an existing masonry chimney -- without the masonry chimney below being changed or any metal liner being placed in the …

Model M B-Vent is compatible with listed masonry relining systems, single wall connectors and other listed gas vents. Model M B-Vent may be used to reline masonry chimneys (Separate instructions are avail- able from Metal-Fab).

Feb 12, 2009 · Around here it is common to have a gas furnace, 6" or so metal flue pipe, with the 3" HWH vent tapped into it via a T or Y in the basement. 6" pipe continuues into a masonry …

If your appliance chimney is found to be in poor condition, we will recommend you B-Vent your gas appliances. Rebuilding a masonry chimney that is venting gas appliances tends to be a …

Has Type B male/female ends for easy connection with Hart & Cooley vent. Requires only 1" clearance to combustibles. UL-listed for use as a connection from an appliance to Type B gas …

Every fuel-burning appliance shall discharge the products of combustion to a vent, factory-built chimney or masonry chimney, except for appliances vented in accordance with Section 804. …

Apr 19, 2012 · Fireplaces, Wood Burning and Heating Stoves, Flues and Chimneys - Chimney: Is B-vent on top of masonry chimney possible? - Is it possible to just add a metal B-vent chimney …

Table 510.2 (4) is used to size common venting installations involving single-wall connectors into masonry chimneys. Water Heater Vent Connector Diameter.

A masonry chimney is a chimney constructed of solid masonry units, hollow masonry units grouted solid, stone or concrete, hereinafter referred to as masonry. Masonry chimneys shall …

Mar 12, 2025 · The function of a chimney flue is to simply route all the by-products of combustion out of the fireplace, stove or insert. This flue liner needs to withstand extreme temperatures in …