Danny Pritchard Posted February 3, 2004 Report Share Posted February 3, 2004 On pre fab firplaces with the knockout on the side for a gas line, is it required to seal the area around the gas line.I always call these out to be sealed.Seems like I read that somewhere.Recently while inspecting new homes I have not seen where this area is sealed.It is so prevalent that this area is not sealed I have started to question if I'm correct for calling it out.I have gone to manufacturers installation pages where it is not mentioned. Danny Pritchard Quote Link to comment Share on other sites More sharing options...
a46geo Posted February 3, 2004 Report Share Posted February 3, 2004 Danny, I have never even thought about what you are now questioning. I don't know. You must be very thorough. However, drawing on my years of experience as an HVAC service tech, I can't figure out why it would be needed, unless called for in the manufacturers installation instructions. George Quote Link to comment Share on other sites More sharing options...
kurt Posted February 3, 2004 Report Share Posted February 3, 2004 Good question. It wasn't noted as an area of concern in the recent fireplace class I took @ InspectionWorld, & "Chimney Bob" Priesing was pretty intense. I'm gonna look into it. Quote Link to comment Share on other sites More sharing options...
kurt Posted February 3, 2004 Report Share Posted February 3, 2004 Originally posted by Danny Pritchard On pre fab firplaces with the knockout on the side for a gas line, is it required to seal the area around the gas line.I always call these out to be sealed.Seems like I read that somewhere.Recently while inspecting new homes I have not seen where this area is sealed.It is so prevalent that this area is not sealed I have started to question if I'm correct for calling it out.I have gone to manufacturers installation pages where it is not mentioned. Danny Pritchard Okay, I got what I was looking for..... The following is from a Majestic fireplace manual: Vermont Castings Majestic Products fireplaces are designed to accept a 1/2 inch gas line for installation of an approved gas appliance. (Vermont Castings Majestic Products manufactures a wide variety of gas logs for use in Vermont Castings Majestic Products fireplaces.) Be sure to have the appliance installed in accordance with building codes. Gas connection may enter from either left or right side of the fireplace. Locate appropriate gas line in the outer casing of fireplace and remove insulation from gas line tube. (Fig. 26) From inside the fireplace, locate the knockout on the firebrick -- be sure you are on the appropriate or "gas line" side of the fireplace. Using a flat bladed screwdriver or small chisel and hammer, carefully tap around the knockout until it loosens and falls out. Install 1/2 inch certified gas pipe through opening. After gas pipe installation is complete, use insulation that was removed from gas line tube to repack space around the pipe. Material should be inserted from outside of the fireplace and packed tightly to totally seal between the pipe and tube. Note: Gas pipe should not come in contact with any wood structures until it has reached a point at least one (1) inch away from fireplace side. Okay, that's what the mfg. sez. After sealing it w/ the fiberglass, my source also recommended laying some refractory cement over the fiberglass to seal it in place. Many thanks to "Chimney Bob" Priesing, of Havelock Chimney Sweep, Inc. in Havelock, NC. If any of you get a chance to hear this man talk about fireplaces, do it; he's the best. http://www.havelockschimneysweep.com Quote Link to comment Share on other sites More sharing options...
Paul MacLean Posted February 3, 2004 Report Share Posted February 3, 2004 I took Dale Feb's fireplace course for inspectors last year and he was adamant about sealing around the gas pipe at refractory panels to keep heat and combustion byproducts out of the chase areas. Quote Link to comment Share on other sites More sharing options...
Danny Pritchard Posted February 3, 2004 Author Report Share Posted February 3, 2004 Thanks for the replies.I thought I was correct in calling this out. Danny Pritchard Quote Link to comment Share on other sites More sharing options...
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