gas insert in existing fireplace.
migraine
| Posted in Energy, Heating & Insulation on
Had a client call me and ask about this concern. Seems that the previous owner had a direct vent(dual 4″ intake/exhaustpipes) gas insert installed in an existing masonry fireplace. When the insert is running for a while, above the insert and on up on the chimney run gets warm to the touch and even the back side, where the kitchen is, gets warm.
I’ve gone on the roof and checked the cap and there is an intake and exhaust pipe running down. Both seem to connected through visual flash light inspection.
Question… do these types of units put out that much heat through the exhaust pipe that the surrounding airspace in the chimney is heated enough to radiate through the interior brick?
Edited 2/24/2009 11:44 am by migraine
Replies
They could. These gas units are designed to be installed in existing masonry fireplaces where wood fires once burned, so they don't tend to have heat shielding that other types of units have that are designed to be installed in combustible framing. The chimney will get heat radiated from not only the exhaust, or flue pipe, but also from the top and sides of the unit itself.
In addition to the inspection that you did on the top side, check that the exhaust is connected securely to the unit's exhaust outlet.
did that...
I suggested that they have it inspected by a chimney/stove pro. Most pros are swamped at this time of the year. Told them I would at least ask here.
Also told them what ever the outcome is from Breaktime, it still should be reinspected in the near future.