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: 278

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

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Barry NewDelman replied to Barry NewDelman's discussion How to give back to your Customers in the group Marketing Energy Efficiency
"Kent: Depends on how look at it , I have saved 100's of customers save anywhere  from…"
2 hours ago
Kent Mitchell replied to Barry NewDelman's discussion How to give back to your Customers in the group Marketing Energy Efficiency
"Phishing? MLM? "
2 hours ago
Barry NewDelman added a discussion to the group Marketing Energy Efficiency
Thumbnail

How to give back to your Customers

Help your Customers get free energy , Open enrollment untill February 13 th in the most Successful…See More
2 hours ago
Bud Poll replied to Bud Poll's discussion CO poisoning in Yarmouth Maine
"Don't I hate links that vaporize over night.  I did a search and found…"
3 hours ago
Tom White's video was featured
5 hours ago
Sean Lintow Sr replied to Bud Poll's discussion CO poisoning in Yarmouth Maine
"Link doesn't work Bud? I doubt Direct Vent as the lack of oxygen should trip the safeties -…"
6 hours ago
Tom White posted a video

Build a Green Future at Laney College

Here's a new video highlighting our 8 construction-related programs which include Architecture, Carpentry, Construction Management, Electrical Technology, En...
6 hours ago
Profile IconSteve Jerue, Einar Johanson, patrick berta and 2 more joined Home Energy Pros
7 hours ago

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service