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consistent combustion by monitoring the millivolt signal and initiating a safety lockout if a flame is not detected during the trial-for-ignition period
limit switch lockout) located on the furnace's wiring diagram or service manual
The Robertshaw 705-461 requires a 240VAC power supply
Cost Efficiency: Extends the service life of existing valve bodies
Only uncoil the length necessary to reach the gas valve plug to avoid unnecessary stress or damage to the mercury-filled tube
Lennox 10M61 Limit Switch 321894-706 consistent combustion by monitoring theThe Lennox 10M61 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial furnace heating systems. As an OEM replacement part, this L180 40F limit control is engineered to open the electrical circuit when the plenum temperature reaches 180F, effectively preventing heat exchanger damage and ensuring safe appliance operation. It features a 40F differential, meaning the switch will
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