Unless I have this wrong, the BPI CAZ depressurization limits and draft calculations are for gas boilers and furnaces.  Up here in New England we have a lot of oil burners.  It would seem that it would take a lot more negative pressure in a CAZ to get an oil burner to spill.  I have flue pressures for oil of: <10 F at -15 Pa, 11 - 40F at -13 Pa, 41 - 60F at -11 Pa, 61 - 90F at -9 Pa, and >90F at -7Pa.

Tags: Oil, burner, limits, pressure

Views: 319

Reply to This

Replies to This Discussion

Paul,
We see lots of fuel oil in the NC mountains where we have been training BPI for over 2.5 years now. After many discussions with several trainers i have come to the conclusion that the fuel oil burner should be classified the same as an induced fan furnace receiving a CAZ Depressurization limit of -15. However, High Retention Head Burners may allow this limit to go even lower. I would love an official BPI interpretation on this issue.
I have recently received a reply from Tony Peters QA for Affiliates for BPI who states that, "CAZ depressurization limits shall be identical for gas or oil fueled combustion appliances. An oil fueled combustion appliance shall not be classified as a mechanically assisted draft appliance. Please classify oil fueled combustion appliances as natural draft boilers or furnaces." He also says, "Draft calculations shall also be identical for oil or gas fueled combustion appliances. Please follow the acceptable draft test results chart found on page 10 of BA for all natural draft appliances."
Seems a bit odd to me, but he explains that, "if the oil fueled combustion appliance has been installed with a barometric damper connected to the vent pipe, it cannot support a -15Pa CAZ depressurization limit."

RSS

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Diane Chojnowski replied to John Nicholas's discussion Slab Edge Insulation - A Side Thread to Melissa's Question
"Great videos Daniel. Would you please add them to our videos…"
3 hours ago
David Holtzclaw replied to Steve Mann's discussion Alnor 6200 LoFlo Capture Hood in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Hi Steve I'm interested 402-213-3788 dholtzclaw@transductiontechnologies.com thanks david "
18 hours ago
Eric Kjelshus replied to Steve Mann's discussion Alnor 6200 LoFlo Capture Hood in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"call me Monday 816-537-5100 "
19 hours ago
Steve Mann added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Alnor 6200 LoFlo Capture Hood

I've got an Alnor 6200 Balometer (Flowhood) I'd like to get rid of. No longer needed--I have a big…See More
20 hours ago
Paul Raymer posted an event
Thumbnail

MA Crew Chief/BPI Building Analyst Training at Bristol Community College at Commonwealth Landing

September 12, 2016 at 9am to September 16, 2016 at 4:30pm
Bristol Community College has created a hands-on training cabin in their laboratory.  This class…See More
23 hours ago
Daniel Morrison replied to John Nicholas's discussion Slab Edge Insulation - A Side Thread to Melissa's Question
"John, I just collaborated with Steve Baczek on a few videos for ProTradeCraft about slab insulation…"
yesterday
Profile IconMichael Sumpter and Bill Gartner joined Home Energy Pros
yesterday
Malcolm Jackson joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
Friday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service