the diaphragm must be positioned in a vertical plane

consistent pilot flame that maintains proper thermocouple heat saturation for reliable gas valve operation

Extended Reach: The 72" lead length is ideal for large-scale equipment where the distance between the pilot burner and the control module is significant

Always verify the model number of your outdoor unit before installation

An open-circuit test should show 500mV to 750mV when the pilot flame is impinging on the top 3/8" of the tip

Johnson Controls T-4100-1 Thermostat Els PW 17895 the diaphragm must be positionedThe Johnson Controls T 4100 1 is a professional grade single temperature pneumatic thermostat engineered for precise proportional control of industrial and commercial HVAC systems. This direct acting pneumatic thermostat features a low volume output design, making it a reliable drop in replacement for legacy pneumatic control systems. Operating within a dial range of 55 to 85? F, the T 4100 1 is optimized for vertical mount thermostat configurations