Carrier HH12ZZ165 Limit Switch 323080-701 protecting the combustion chamber and

protecting the combustion chamber and surroundings

Designed for use with Weil-McLain EG and PEG series boilers

and the "A" model is for systems with vent dampers

Common Questions: What is the temperature range for the operating control

Carrier HH12ZZ165 Limit Switch 323080-701 protecting the combustion chamber andThe Carrier HH12ZZ165 Limit Switch is a critical OEM safety component engineered for precision thermal monitoring in HVAC furnaces and industrial heating systems. As a fixed temperature L165F 40 limit control, this switch features a normally closed (NC) circuit designed to open on a temperature rise at its 165F set point, effectively preventing heat exchanger damage. With a 40F differential, the automatic reset engages when the internal temperature