this comprehensive TXV kit includes the necessary internal orifice and sensing bulb for a seamless field installation

ensuring long-term reliability without frequent re-packing

also identified as 05

Excess tubing should be carefully coiled and secured away from heat sources

Why does this manual reset limit switch keep tripping on my boiler

Carrier HH12ZZ165 Limit Switch 319848-301 this comprehensive TXV kit includesThe 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