dchomeinspection
Registered User
First time post!
When you read 2018 IFC 915.1.3, what is the intent behind this provision? I don't have a copy of the IFC with commentary. Is the intent to prevent CO exposure from leakage around ductwork penetrations through the wall or CO that may enter duct work through a deteriorated heat exchanger? If the intent is to prevent CO exposure from leaks around furnace ductwork, wouldn't CO exposure be possible from leaks around radiator piping in a dwelling unit/sleeping room adjacent to a boiler room? However, this section specifies furnaces and not boilers.
If the intent of this IFC section is to address deteriorated heat exchangers in furnaces, I've heard several mechanical engineers state in CE classes the pressure differentials between the return air/plenum and the combustion air in the heat exchangers prevent this from happening. The other reason this section may not be addressing heat exchangers is that if there were a CO leak into the duct work from the heat exchanger, CO would leak through all available duct openings, not just the duct openings in the first adjacent room after the furnace plenum.
Thanks in advance for clarifications you may have on this section.
When you read 2018 IFC 915.1.3, what is the intent behind this provision? I don't have a copy of the IFC with commentary. Is the intent to prevent CO exposure from leakage around ductwork penetrations through the wall or CO that may enter duct work through a deteriorated heat exchanger? If the intent is to prevent CO exposure from leaks around furnace ductwork, wouldn't CO exposure be possible from leaks around radiator piping in a dwelling unit/sleeping room adjacent to a boiler room? However, this section specifies furnaces and not boilers.
If the intent of this IFC section is to address deteriorated heat exchangers in furnaces, I've heard several mechanical engineers state in CE classes the pressure differentials between the return air/plenum and the combustion air in the heat exchangers prevent this from happening. The other reason this section may not be addressing heat exchangers is that if there were a CO leak into the duct work from the heat exchanger, CO would leak through all available duct openings, not just the duct openings in the first adjacent room after the furnace plenum.
Thanks in advance for clarifications you may have on this section.