BPI Building Analyst Field exam CO &
CAZ
Turn on both, the combustion analyzer & gas leak detector - Answer-MEASURE outside ambient with CO
analyzer in fresh air
(you always need to
RECORD outside temperature on sheet from CO analyzer
OBSERVE the house from outside, what do I see?
- check house roof vents
- base (foundation)
- draining systems
- windows
- wiring or piping into house thru a wall (are they sealed?)
ASK PROCTOR FOR PERSONAL CO MONITOR - Answer-- MONITOR personal breathing zone
Start at gas meter to check for gas leaks - Answer-BPI Standards state to check gas lines at a rate of 1"
per second
- pay special attention to all of the joints
- mention that if there was a gas leak, I would verify it with soap & water solution
- also, would need to tag the leaks
Check gas lines in basement - Answer-Start at where the pipe comes into the basement wall
- Propane (LP) check at UNDER side of gas line
, - Natural gas (methane) check on TOP of gas line
Make sure to do all the way over to the furnace
- including taking off the cover and checking inside of it for gas leaks
Check all gas flex lines - Answer-- Look for signs of corrosion, rust, kinks, rips, tears or holes
- Determine if pre-1973 (if so, they need replaced)
- check for gas leaks on flex lines as well
GAS Leak around gas stove and gas dryer - Answer-- check behind each of these by putting gas detector
back behind it the best I can
- DO NOT MOVE THEM
Combustion safety tests - Identify systems: Furnace - Answer-- 90% / High efficiency FURNACE aka
"condensing" furnace (has pvc pipes & condensate drain)
TOP has a "sealed" combustion chamber too that exhausts gases from one pvc pipe and the other pvc
pipe brings air in for combustion to this chamber
- Point out the gas control valve - controls the flow of gas to the burners
- Point out pilot light or lighter (by gas control valve)
- Point out the inducer motor
- point out the gas shut off valve - to side like on water heater?
- point out this furnace does NOT have an emergency power switch on the side of the furnace
- point out DRAFT HOOD - connected to flew connector (but possibly not on this one)
BOTTOM has the blower compartment
- condensate drain pipe leading inside to furnace
DUCTS
- return duct (has filter in it) - negative pressure
CAZ
Turn on both, the combustion analyzer & gas leak detector - Answer-MEASURE outside ambient with CO
analyzer in fresh air
(you always need to
RECORD outside temperature on sheet from CO analyzer
OBSERVE the house from outside, what do I see?
- check house roof vents
- base (foundation)
- draining systems
- windows
- wiring or piping into house thru a wall (are they sealed?)
ASK PROCTOR FOR PERSONAL CO MONITOR - Answer-- MONITOR personal breathing zone
Start at gas meter to check for gas leaks - Answer-BPI Standards state to check gas lines at a rate of 1"
per second
- pay special attention to all of the joints
- mention that if there was a gas leak, I would verify it with soap & water solution
- also, would need to tag the leaks
Check gas lines in basement - Answer-Start at where the pipe comes into the basement wall
- Propane (LP) check at UNDER side of gas line
, - Natural gas (methane) check on TOP of gas line
Make sure to do all the way over to the furnace
- including taking off the cover and checking inside of it for gas leaks
Check all gas flex lines - Answer-- Look for signs of corrosion, rust, kinks, rips, tears or holes
- Determine if pre-1973 (if so, they need replaced)
- check for gas leaks on flex lines as well
GAS Leak around gas stove and gas dryer - Answer-- check behind each of these by putting gas detector
back behind it the best I can
- DO NOT MOVE THEM
Combustion safety tests - Identify systems: Furnace - Answer-- 90% / High efficiency FURNACE aka
"condensing" furnace (has pvc pipes & condensate drain)
TOP has a "sealed" combustion chamber too that exhausts gases from one pvc pipe and the other pvc
pipe brings air in for combustion to this chamber
- Point out the gas control valve - controls the flow of gas to the burners
- Point out pilot light or lighter (by gas control valve)
- Point out the inducer motor
- point out the gas shut off valve - to side like on water heater?
- point out this furnace does NOT have an emergency power switch on the side of the furnace
- point out DRAFT HOOD - connected to flew connector (but possibly not on this one)
BOTTOM has the blower compartment
- condensate drain pipe leading inside to furnace
DUCTS
- return duct (has filter in it) - negative pressure
