Direct Fired Heating cETL vs usETL rating
Direct Fired Heating cETL vs usETL rating
(OP)
Hello,
I am continuing to do research on Direct Fired Heating Units such as h ttp://www. rapidengin eering.com /hvac/dire ct_fired/4 000/hvac_d irect_fire d_4000_ove rview.html and h ttp://www. trane.com/ CPS/upload s/userfile s/productp dfs/mua-pr c007-en_12 042009.pdf
I have found so far that these units that can operate in recirculate mode can only be certified by the ETL (Edison Testing Lab, now Intertek)for use in the United States, the only way to be certified for Canada is 100% fresh air mode only, no recirculation.
Does the ETL test ANSI, NFPA, etc... standards or do they have their own standards that would differ for Canada? I have wrote to ETL but so far no response.
Seems like a safety issue that may be overlooked for the US but is addressed by Canadian regulators possibly?
I had posted this thread earlier this year for a little background http://www.eng-tips.com/viewthread.cfm?qid=263886
Thanks for all of your help!
I am continuing to do research on Direct Fired Heating Units such as h
I have found so far that these units that can operate in recirculate mode can only be certified by the ETL (Edison Testing Lab, now Intertek)for use in the United States, the only way to be certified for Canada is 100% fresh air mode only, no recirculation.
Does the ETL test ANSI, NFPA, etc... standards or do they have their own standards that would differ for Canada? I have wrote to ETL but so far no response.
Seems like a safety issue that may be overlooked for the US but is addressed by Canadian regulators possibly?
I had posted this thread earlier this year for a little background http://www.eng-tips.com/viewthread.cfm?qid=263886
Thanks for all of your help!





RE: Direct Fired Heating cETL vs usETL rating
The way we build has a far greater impact on our comfort, energy consumption and IAQ, than any HVAC system we install
RE: Direct Fired Heating cETL vs usETL rating