BPI Building Analyst Field exam 2024-2025
ASK PROCTOR FOR PERSONAL CO MONITOR - ANSWER-- MONITOR personal
breathing zone
Attached garage - ANSWER-While home is pressurized at -50 pa, and standing in the
garage, test with smoke for possible connections to the house
- During the winter time, people tend to warm up their cars in the garage
(doesn't matter if garage door is open or not) wind can push CO directly into the house if
not properly air sealed!!
** #1 HIGH PRIORITY for AIR SEALING
Causes for appliances to back draft? - ANSWER-- excessive negative pressure in the
CAZ
- poor flue design
- no flue liner in masonry chimneys
- blockage in the flue
- orphaned water heater
- minimal rise of the flue
** Add more to this list as I think of them
CAZ testing - ANSWER-1) RECORD indoor ambient CO level (highest detected)
2) RECORD outdoor temperature
3) Set-up to monitor personal breathing zone BEFORE entering CAZ
4) Set-up manometer to RECORD baseline pressure - green hose out to porch w/slider
window open using the metal piece for inside of the green hose and place under back
door (closest to kitchen)
- interior doors open
- exhaust appliances and furnace off
MAKE sure to RECORD the baseline pressure before moving to next step (Baseline
only)
5) CLEAN dryer lint trap (maximizes air flow thru dryer vent)
- turn on to air (fluff) - no heat
- turn on all other exhaust appliances - for this house BATHROOM exhaust only
MAKE sure to RECORD exhaust only pressure
(exhaust only)
6) Make CAZ more negative
- turn on furnace (at thermostat)
- close each door, one by one to determine if the door should remain closed or open
(use smoker to see if the smoke goes to toes - keep closed or if the smoke goes back in
- open it back up) **Do not need to smoke on first door I close because there is no
pressure difference yet
**NOTE - DOOR CLOSURE TEST - if the pressure across the door is close to equal
(smoke rises straight up) close the door to make the volume of the house smaller
**NOTE - with two-pipe condensing furnaces the burner does not need to operate if
desired
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller CLOUND. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.