Johnny Mills
  • Accokeek, MD
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Simulate the fireplace during combustion safety testing or not???
11 Replies

Hello all,I have noticed that BPI Standards for combustion safety do not require the simulation of a fireplace using 300 cfm during worst case depressurization but Resnet does. Is this correct or am…Continue

Started this discussion. Last reply by Gary Baggett Jul 7, 2012.

 

Johnny Mills's Page

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Gary Baggett replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"lol..."sick customers do not make good referalls"...  "
Jul 7, 2012
Sean Lintow Sr replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"I think Bud did a great job on nailing the issue on the head & yes to the chimney balloons as most dampers don't do so well. As for the question, who has it right - that is simple as neither of them do as they both have their heads... (feel…"
Jul 6, 2012
Johnny Mills's discussion was featured

Simulate the fireplace during combustion safety testing or not???

Hello all,I have noticed that BPI Standards for combustion safety do not require the simulation of a fireplace using 300 cfm during worst case depressurization but Resnet does. Is this correct or am I missing something here? Where did the 300 cfm value come from? Is it truly accurate and can it be applied to all homes no matter what the total ft2 is. It seems to me every time I simulate the fireplace at 300 cfm most natural draft appliances will fail spillage. Thiis is causing action to install…See More
Jul 6, 2012
Gary Baggett replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"This is one of the big problems with RESNET and BPI not being on the same page. If we go with true depressurization, then we have to consider the fireplaces. Bud hits things right on the head here as there are so many variables.…"
Jul 6, 2012
Don Fugler replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"The 300 cfm number is in the right ballpark. CMHC (in Canada) tested many fireplaces, both masonry and metal, twenty years ago. We saw some that would do 1000 cfm (big masonry with roaring fire) and some manufactured units that were in the order of…"
Jul 5, 2012
Johnny Mills replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"This is a good place to begin and lots of great insite. Thanks for the info. Any other thoughts?"
Jul 2, 2012
Bud Poll replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"Hi Bruce, I can get you started, but there is much to consider when a house has a natural draft fireplace. Obviously, when it is not in use and the damper is closed there is nothing to simulate, assuming the damper seals well. But when it is…"
Jul 2, 2012
Bruce Navin replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"I am relatively new to all of this, and have not encountered this scenario yet, but it seems to me that creating a worse case scenario-establishing winter time conditions with doors & windows closed, and running the active appliances that would…"
Jul 2, 2012
Diane Chojnowski left a comment for Johnny Mills
"Hi Johnny, Welcome to Home Energy Pros. Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for…"
Jul 2, 2012
Johnny Mills replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"I guess my main question is that BPI standards do not state to simulate the fireplace in its procedures to set up worst case. If I were to follow procedures to an exact I would not simulate the fireplace potentially not depressurizing the CAZ to its…"
Jul 1, 2012
Bob Blanchette replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"Even if the appliances aren't sealed combustion, furnaces and tankless water heaters are at least induced draft. Induced draft solves the backdraft issue, although there is still some negative pressure generated when they run. As for fireplaces…"
Jul 1, 2012
Johnny Mills replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"In the DC region, due to limited space, more often than not the combustion appliances are within the conditioned space. In most cases the natural draft furnace or boiler is old enough to be replaced and I am reccomending doing so with seal…"
Jul 1, 2012
Bob Blanchette replied to Johnny Mills's discussion Simulate the fireplace during combustion safety testing or not???
"Why are natural draft appliances begin installed in conditioned space to begin with? On existent homes you don't have a lot of choice, but the fireplace will almost always cause a backdrop in a reasonably tight home unless a window is cracked…"
Jul 1, 2012
Johnny Mills posted a discussion

Simulate the fireplace during combustion safety testing or not???

Hello all,I have noticed that BPI Standards for combustion safety do not require the simulation of a fireplace using 300 cfm during worst case depressurization but Resnet does. Is this correct or am I missing something here? Where did the 300 cfm value come from? Is it truly accurate and can it be applied to all homes no matter what the total ft2 is. It seems to me every time I simulate the fireplace at 300 cfm most natural draft appliances will fail spillage. Thiis is causing action to install…See More
Jun 30, 2012
Johnny Mills is now a member of Home Energy Pros
Jun 29, 2012

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Self
Professional Certification
BPI BA and Envelope

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At 6:13am on July 2, 2012, Diane Chojnowski said…

Hi Johnny,

Welcome to Home Energy Pros.

Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to upload your profile photo. And add your location on our Member Map.

Thanks!

Diane, HEP Moderator

 
 
 

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