York Parts S1-02634028001 Gas Furnace Limit SwitchGas Furnace Limit Switch, York Parts S1 02634028001, is a critical safety component that protects your heating system by interrupting power when temperatures reach the preset limit. This York Parts limit switch is designed for reliable operation in upflow and horizontal gas furnaces and features a temperature rating of 155F (open) and 125F (close). Built for straightforward replacement, this limit switch seamlessly fits compatible York and other OEM

robust power venting solution designed for oil and gas furnaces

controllable humidity

Diaphragm Gas Valve by Honeywell Thermal Solutions FSG V48A2169 delivers precise control for atmospheric boiler systems and commercial water or rooftop heaters

Selectable Recycle/Non-Recycle programming

Adjustable time delay 0–720 seconds for anti-short cycle protection

Precise temperature sensing to prevent overheating

Ideal for use on air heat coils

Used On: PAI-4 Combustion Air Intake Equipment

Designed for reliable pneumatic control

ensuring dependable operation across commercial

Compatibility: Specifically designed for water heater gas spillage sensing and safety shutoff

The 24V coil allows safe