Bachi Brunato
  • Oakland, CA
  • United States
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Modeling a Gas Fireplace in Wrightsoft
12 Replies

Any advice on how to factor a gas fireplace into a Wrightsoft Manual J model? Seems like it would reduce the required heat from the central gas forced air system in that room. But not quite sure how…Continue

Started this discussion. Last reply by Judy Rachel on Wednesday.

Troubleshooting a Furnace Blower
12 Replies

Looking for some help troubleshooting this furnace blower issue!Carrier Model 58CTX070Furnace is not delivering much air to supply grills and is shutting itself off every 10 minutes.Why is it not…Continue

Tags: Blower

Started this discussion. Last reply by Bob Blanchette Jan 5, 2014.

Extraordinarily High CO Reading on a Furnace Vent: 3950 PPM
6 Replies

I just tested  Fraser & Johnston natural draft furnace and got the highest CO reading that I've ever seen: 3950 PPM (air free).Model # 80 RD 12-A.Code date: 70 F3What could could cause such a…Continue

Started this discussion. Last reply by Eric Kjelshus Aug 22, 2013.

Need Help Decoding a Couple of Nameplates
4 Replies

Does anybody know what the decoding formula is for a Takagi T-K2 Flash Water Heater?  Can't seem to find Takagi products on my regular decoding lists. Serial # 15023932.Also have a what looks to be a…Continue

Started this discussion. Last reply by Om Builder & construction Aug 25, 2013.

 

Bachi Brunato's Page

Latest Activity

Judy Rachel replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"A.  The point is that ACCA Manual J does not model for the Btu gain from fireplaces. B.  Fireplaces are a part of the infiltration load in ACCA Manual J.  You have a choice as to construction quality - Tight, Semi-Tight, Average,…"
Wednesday
Dennis Heidner replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"I think that was part of his concern.  Its a sealed combustion unit.  So the infiltration that might be used for an ordinary fireplace is going to be off the chart.  If its a new home with high end sealed combustion fireplace,…"
Wednesday
Judy Rachel replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"ACCA Manual J does not consider any heating (BTU gain to a room) from a fireplace.  Manual J only allocates infiltration to the home caused by the fireplace's construction quality."
Wednesday
Dennis Heidner replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"When you model,  add a small additional area  -- say less than 10 sq inch of for possible air leaks...(that should be real high)... be safe and model the fireplace at 60%... efficient.  It really should be used just occasionally not…"
Aug 15
Eric Kjelshus replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"some can get up to 92% with PVC vent.   Some use 24 volt thermostat that can be +- 2 dead band with heating thermostat"
Aug 14
Bachi Brunato replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"Sealed combustion fireplace insert. No pilot. I believe it can be hooked up to a room thermostat. "
Aug 14
Eric Kjelshus replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"I put a 2 Inch foam cover and painted it black and dropped the heat loss by 3/4.  You can not use it a fire place till remove the cover.  Most cast iron damper are so bent I can not close.   Just say NO to fireplaces and put in the…"
Aug 13
Dennis Heidner replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"What kind of gas fire place?  Gas logs... in "generic brick fireplace" with dampers that are left open?  Or a sealed combustion fireplace insert?  With a pilot or pilotless?"
Aug 12
Beverly Lerch replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"I agree, that fireplaces are for looks and not heat.  There are those who insist on having a fireplace, especially gas, where the vent is always open.  The fireplace needs to be covered with insulation to stop heat/cooling loss.…"
Aug 12
Kent Browning replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"Wrightsoft has an option to include a fireplace in a zone.  I would use that option since it complies with the Manual J instructions.  If you use some other method (hole or heating source) you should make sure your method complies with…"
Aug 12
Eric Kjelshus replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"Most fireplaces a just a hole that lets heated/cooled air out chimney.  If the heated hole(fireplace) is use much just add more CFM to vent rate.   Most fireplaces are for looks and not a  real way to heat the building (eye candy).…"
Aug 6
Bachi Brunato's discussion was featured

Modeling a Gas Fireplace in Wrightsoft

Any advice on how to factor a gas fireplace into a Wrightsoft Manual J model? Seems like it would reduce the required heat from the central gas forced air system in that room. But not quite sure how to include this in the model. Any advice is appreciated. This is my second Manual J model.BachiUltimate Home PerformanceSee More
Aug 5
David Baerg replied to Bachi Brunato's discussion Modeling a Gas Fireplace in Wrightsoft
"I would not include it.  Given that it is likely much less efficient than the gas furnace, you don't want to count on the occupants using it when the outside temperature approaches the design temperature.  However, if it is…"
Jul 31
Bachi Brunato posted a discussion

Modeling a Gas Fireplace in Wrightsoft

Any advice on how to factor a gas fireplace into a Wrightsoft Manual J model? Seems like it would reduce the required heat from the central gas forced air system in that room. But not quite sure how to include this in the model. Any advice is appreciated. This is my second Manual J model.BachiUltimate Home PerformanceSee More
Jul 31
Bachi Brunato joined Kyle Brown's group
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Wrightsoft - Manual J / Manual D

If you use Wrightsoft to calculate loads or design ducts, you likely have questions.  Get answers from veteran program users and peers here!
Jul 30
Bob Blanchette replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"Figured that would fix it :)"
Jan 5, 2014

Profile Information

Company
Ultimate Home Performance
Professional Certification
BPI Analyst & Envelope
Website URL
http://ultimatehomeperformance.com

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At 6:12am on June 10, 2011, Diane Chojnowski said…

Hi Bachi,

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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