preventing heat exchanger damage and ensuring system safety

Rugged Electrical Specs: Rated for 5

and vent float required for a full rebuild

By allowing for non-direct mounting and flexible orientation

Technicians should use a manometer to measure the actual vacuum at the switch port

Lennox 52M74 Rollout Switch preventing heat exchanger damage andThe Lennox 52M74 Rollout Switch is a critical safety component designed for precise over temperature protection in Lennox furnace units and residential HVAC systems. As a Single Pole Single Throw (SPST) switch, this manual reset flame rollout switch is engineered to interrupt the ignition circuit when it detects temperatures reaching the 320 degrees F threshold. This prevents hazardous conditions resulting from heat exchanger failure or flue