Bachi Brunato
  • Oakland, CA
  • United States
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Modeling a Gas Fireplace in Wrightsoft
1 Reply

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 David Baerg on Friday.

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

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…"
Friday
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
Friday
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!
Friday
Bob Blanchette replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"Figured that would fix it :)"
Jan 5, 2014
Bachi Brunato replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"Turns out it was the capacitor. Installed a new one and all systems are back on track. Total static pressure is up to 0.46 wc now. Temp rise is down to 51°F. High limit switch is no longer tripping. Fan motor seems  $5 part. Happy client."
Jan 5, 2014
Bob Blanchette replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"In a 240v circuit I 100% agree on the 440v caps. On a 120v circuit a 370v is plenty."
Dec 20, 2013
Eric Kjelshus replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"I get 440 volt Capacitor,  now  with lack of size lack of  oil in new caps the leads over heat and burn out. new caps are just 1/5 the size of 25 yr ago.    If the end play is to much the OHM change when moving the shaft and…"
Dec 20, 2013
Bob Blanchette replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"Payback isn't there unless customer runs fan 24/7, has high utility rates or already has a bad PSC motor."
Dec 20, 2013
Bachi Brunato replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"Just Ohm tested all the motor leads. They all look good. Problem seems to be limited to the capacitor only. Ordered a 7.5 uf, 370A capacitor.  Will post results when I get it installed."
Dec 20, 2013
Eric Kjelshus replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"replace the motor from a PSC  with an after market ECM  evergreen or like.  You may have to change braket or holder for the motor as the ECM take more tork and brake welds.   eff changes from 25-35% to 60-75%.  If the SP is…"
Dec 20, 2013
Bob Blanchette replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"It's possible but unlikely for a motor to damage the capacitor. A bad cap can burn up a motor if not promptly replaced. Capacitors are under $15, buy one and put it in. The capacitor is definitely bad according to your test. You should always…"
Dec 19, 2013
Bachi Brunato replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"I've heard that the capacitor and motor can go out at the same time. Eg: a bad motor can damage the capacitor and a bad capacitor can damage the motor."
Dec 19, 2013
Bob Blanchette replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"Looks like you found your problem, shorted capacitor."
Dec 19, 2013
Bachi Brunato replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"No AC coil on this unit. Just a gas burner and heat exchanger. Supply SP is 0.035 wc. Return SP is 0.070 wc. Amp draw on the motor:    @ black wire: 7.2 and falling. Went down to 5.35 amps while I was watching.    @ yellow…"
Dec 19, 2013
Bob Blanchette replied to Bachi Brunato's discussion Troubleshooting a Furnace Blower
"I'm thinking your static reading may be off, are you testing below or above the A-coil? Pressure drop across the coil alone should be more than .1". What is the amp draw on the motor? Does the motor seem to be "running hard",…"
Dec 19, 2013
Bachi Brunato's discussion was featured

Troubleshooting a Furnace Blower

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 moving enough airHere are the results of my initial tests:Tripping the Limit SwitchError code = 33After 5 minutes of heat.Supply air temp climbs to 175 FTemp rise is over 100 degrees at low settingDesign is 30-60 degrees for temp riseAfter furnace cools, the limit switch appears to close again, and the…See More
Dec 19, 2013

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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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