Natural vent also referred to as b vent hearth products take in combustion air from inside the home and vent products of combustion outside home via a brick and mortar chimney or pipe venting system installed through the roof.
Gas fireplace exhaust vent clearance to roof.
See the detailed b vent chimney rooftop clearance table below.
Dura vent type b gas vent steep roof flashing for vent pipes with a 3 inch diameter 3gvfsr.
Distance required usa 2.
Dura vent type b gas vent standard connection tee cover for connection tees with a 6 inch diameter 6gvtc.
Described in the installing the fireplace section of the installers guide.
Metal fab 4 diameter wall strap.
New chimneys should be lined with clay tile or steel.
84 2 1m 3 note 5.
The top of the chimney should be at least two feet above anything within a ten foot radius of the chimney.
When the rain enters the fireplace through the vent it is often that the vent is pitched up too far.
Clearance above paved sidewalk or a paved driveway located on public property.
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Except for flat and very low slope roofs such as those listed in the table below b vents should be at least two feet above the roof surface as well.
Some natural vent hearth products have a sensor to extinguish the fire in case exhaust gasses ever reverse and come down the flue.
They must meet height requirements in relation to the roof.
The product is made to produce up to 32 000 btu of heat enough to heat 1 500 sq.
No other vent systems or components may be used.
Distance required canada 1.
Some call for being level while others must be pitched 1 4 per foot.
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Most local building codes and the icc want 2 inches of clearance between a wood frame exterior or interior wall and masonry.
We also recommend that you consult a qualified gas fireplace or wood burning fireplace vent installer before beginning the installation process.
84 2 1m 3 note 5 clearance above paved sidewalk or a paved driveway located on public property.
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Remember you have two pipes so two places water can enter.
Once you ve decided on the type of fireplace you want you ll need to consider the required specifications.
This gas fireplace and vent assembly must be vented directly to the outside and must never be attached to a chimney serving a separate solid fuel burning appliance.
Each gas appliance must use a separate vent system.
However some designs do not have adequate means to control water intrusion into the vent.
