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#1
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Historical furnace or heater question.
On Dec 10, 7:11*pm, Molly Brown wrote:
Can anyone give me any information on when a fail safe circuit using a thermocouple or pilot generator for a heater became standard for household use or when it became mandatory for manufacturers of furnaces. I have an Adrews floor heater. Yes it’s VERY old. It doesn’t seem to have a fail safe circuit. I am very curious as the whether it never had it or if someone messed with it. Yes I know all about pushing in and holding down the pilot control rod to light the pilot but this rod isn’t going down or up, it only turns. Yes I know I should replace the entire heater and I am in the process of replacing it now or very soon. I am simply curious about its operation that is all. Any historic information you can give would be greatly appreciated. Thank you. conversion burners installed in the 1950s had thermocouple protection. but I dont know how early it started, except I checked out a really ancient water heater from the 20s, that had no thermocouple |
#2
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Historical furnace or heater question.
On Thu, 10 Dec 2009 16:17:34 -0800 (PST), "
wrote: On Dec 10, 7:11Â*pm, Molly Brown wrote: Can anyone give me any information on when a fail safe circuit using a thermocouple or pilot generator for a heater became standard for household use or when it became mandatory for manufacturers of furnaces. I have an Adrews floor heater. Yes its VERY old. It doesnt seem to have a fail safe circuit. I am very curious as the whether it never had it or if someone messed with it. Yes I know all about pushing in and holding down the pilot control rod to light the pilot but this rod isnt going down or up, it only turns. Yes I know I should replace the entire heater and I am in the process of replacing it now or very soon. I am simply curious about its operation that is all. Any historic information you can give would be greatly appreciated. Thank you. conversion burners installed in the 1950s had thermocouple protection. but I dont know how early it started, except I checked out a really ancient water heater from the 20s, that had no thermocouple Some had flame sensors instead of thermocouples. (CaDS - cadmium disulphide) photocells. |
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