The small pipe vents exhaust gases to the outdoors while the outer larger pipe pulls in oxygen for combustion.
Direct vent gas fireplace flue size.
The outer pipe also acts as an insulator to keep the surface temperature of the vent system lower.
Gas fireplaces include direct vent units that vent combustion gasses directly outside vent free units that use the indoor air to fuel the combustion process and vent safely into the room and units that replace existing masonry fireplace openings called fireplace inserts.
What cause a direct vent rais propane stove to over fire.
Direct vent pro chimney systems feature state of the art engineering and manufacturing.
Gas fireplaces can have the look and feel of a real wood fire without.
On 2020 01 07 by mod anon ratio of fireplace opening dimension to chimney flue size a reasonable rule of thumb giveing the ratio of fireplace opening size to the cross sectional area of the fireplace flue vent opening is 10 to 1.
You can find some of these fireplaces here if you re looking for a vent free option you can find some great options here yes the best fireplaces on the market generally use a direct vent venting.
How a direct vent gas fireplace works.
Direct vent fireplaces use a coaxial vent system which features a small pipe within a larger pipe.
Indoor gas fireplace bigger spaces call for greater warmth and presence.
The 8000 series indoor gas fireplace offers a 34 percent larger opening than our iconic 6000 series for a captivating fireside experience and many style choices.