BPI Worst Case CAZ Depressurization Testing

An insider's review of setting up the Combustion Appliance Zone for worst case depressurization conditions, from the Building Performance Workshop. Complies with Building Performance Institute (BPI) and Residential Energy Services Network (RESNET) standards.

Views: 793

Comment

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

Comment by A. Tamasin Sterner on May 16, 2011 at 4:04pm
What we do is use a 100 ft hose that is attached to the manometer - end in the CAZ - so we can SEE what's happening in the CAZ all the time.
Comment by Corbett Lunsford on May 16, 2011 at 4:02pm
Good tip- though it can be impractical to always check what each door does, it would be a great learning experience.  You can be sure of reaching worst case more simply by starting at the furthest point from the CAZ, so you're always measuring the zonal pressure in the room WRT the CAZ (where you're standing, due to all the open doors behind you).
Comment by A. Tamasin Sterner on May 16, 2011 at 3:10pm
Nice work.  Suggestion:  What we REALLY want to know is what the air handler and door positions are doing to the CAZ.  So, what we do is monitor the pressure in the CAZ when operating fans and the air handler and door positions.  A person really doesn't know the maximum CAZ depressurization unless one is monitoring what is happening in the CAZ during the fan operation and door closures.

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

Craig Foley posted an event
Thumbnail

NESEA BuildingEnergy '15 at Seaport World Trade Center, Boston

March 4, 2015 from 10:30am to 12:30pm
High-Performance, Green Homes in Residential Real EstateInstructor Craig Foley will present three…See More
11 hours ago
Casey Gesell posted a video

ThermalDry® Insulated Floor Decking!

Larry Janesky, owner and founder of Dr. Energy Saver is once again On the Job insulating and finishing a basement in the northeast – and introducing a brand new insulation product: ThermalDry Insulated Floor Decking. ThermalDry Floor Decking was…
11 hours ago
Profile IconBergen Heat, Travis Thom and Amita Singh joined Home Energy Pros
14 hours ago
Tom White's video was featured

U.S. Department of Education Webinar for HVACR Educators

Rebroadcast from On April 30, 2013 Sharon Miller and Robin Utz of the U.S. Department of Education conducted a one hour webinar for HVACR educators to provide them firsthand information from Washington. Highlights include: * A blueprint to revise…
14 hours ago
Tom White posted a video

U.S. Department of Education Addresses HVACR Educators 4-30-2013

Rebroadcast from On April 30, 2013 Sharon Miller and Robin Utz of the U.S. Department of Education conducted a one hour webinar for HVACR educators to provid...
14 hours ago
Nate Adams's discussion was featured
yesterday
Bud Poll replied to Bud Poll's discussion CO poisoning in Yarmouth Maine
"Hi Chad, I sure would like to hear the follow-up on what caused the CO issue down there.  As…"
yesterday
Chad Mcaulife replied to Bud Poll's discussion CO poisoning in Yarmouth Maine
"I got a call yesterday from a homeowner who had a direct vent furnace installed a year ago and she…"
yesterday

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service