S1-7624A3591 180°F Manual Reset L180 Upper Limit Switch, Fit for York Coleman Luxaire Tempstar Evcon Gas Furnace (60,000-120,000 BTU), Compatible with 7624-A3591 S1-7990-3591 Supco L180MR
Core Specification & Function: This L180 upper limit switch features a 180°F (82°C) temperature trigger and manual reset design, which automatically cuts off the burner power for furnace overheat protection when internal temperature exceeds the safe limit, preventing equipment damage and fire hazards. It adopts a single pole normally closed (SPNC) structure, works for -40°F to 250°F, suitable for HVAC temperature control systems of home and light commercial gas furnaces
Brand Compatibility & Application Scenario: Fit for York (GTA060/GTS090/Affinity LX100), Coleman (COAT066BDD/COAT084BDD/DGAA075/Evcon), Luxaire (GSH080/GSL110), Tempstar (NXA060/NXC090) gas furnaces (forced air/condensing type); exclude oil furnaces, electric furnaces and industrial furnaces. It fits 60,000-120,000 BTU mainstream gas furnaces, the key HVAC safety control part
Replacement Part Numbers: Directly compatible with original part numbers S1-7624A3591, 7624A3591, 7624-A3591, 7624-A359; also fits for S1-7706A3591, S1-7706-3591, S1-7724-3791, S1-7675-3591, S1-7990-3591, and third-party models like L180MR, 47-21504-01 for furnace limit switch replacement
Installation Details: Easy to install with snap-on or screw-fixed design, mounted on the furnace upper part adjacent to the heat exchanger air outlet. Equipped with 6.3mm plug-in quick terminals (3in silicone high-temperature wire), no wire stripping needed, directly connects to 24VAC control circuit and 120/240VAC main circuit of gas furnaces
Compatibility Rules & Notes: Only fits 180°F manual reset upper limit switch replacement, not for automatic reset or other temperature (160°F/200°F) models. Compatible with single-stage/two-stage gas furnace control systems, IP20 protection level, suitable for closed furnace internal environment (avoid outdoor/humid occasions) to ensure HVAC safety