Help me prove a point to shut up a blowhard who thinks he knows it all. He say's; Once the overheating problem has been corrected, you can substute a damaged "snap-disc," style Hi-Limit (Like Carrier and Luxaire use) w/a 3" Camstat.
I've told him he's wrong. You should never substitute a limit. The best ammo I have to prove my point is from the
RUUD Installation Instruction book for their Two-Stage Gas Furnaces(-)GRK SERIES: page 10:OVERTEMPERATURE SAFETY SWITCHES. Furnaces are equipped with safety switches in the control compartment to protect against overtemperature conditions caused by inadequate combustion air supply. If a switch is tripped it must be manuslly reset.
(Sounds like they're refering to a "spill," or "rollout," switch.)
WARNING: DO NOT JUMPER THESE DEVICES! IF ONE OF THESE SWITCHES SHOULD TRIP, A QUALIFIED INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER MUST BE CALLED TO CHECK AND/OR CORRECT FOR ADEQUATE COMBUSTION AIR SUPPLY. BLA....BLA...BLA... REPLACE THESE SWITCHES ONLY WITH THE IDENTICAL REPLACEMENT PART. That's the best I can come up with so far. I do Recall that Carrier does specifically mention not to substitute Hi-Limits. I'm looking for manufacture printed material forbiding the use of substitute parts. HELP!