Carrier HH18HA017 Limit Switch Els PW 17895 ensuring a secure connection and

ensuring a secure connection and stable arc performance for heavy-duty applications

Glycol Concentration: What is the maximum glycol concentration this valve can reliably handle in a hydronic system

this model includes both vertical and horizontal covers and utilizes a terminal block for secure wiring connections rather than loose leads

Veteran technicians recognize this as a vital safeguard against heat exchanger rollout or blower motor failure

Rugged Construction: Designed to withstand the thermal stress and vibration cycles typical in high-efficiency furnace vestibules

Carrier HH18HA017 Limit Switch Els PW 17895 ensuring a secure connection andThe Carrier HH18HA017 is a critical safety component designed for precise thermal management in high performance HVAC systems. This L170 40F limit switch functions as a primary high limit control, monitoring the heat exchanger or plenum temperatures to prevent equipment damage. When the internal temperature reaches the 170F threshold, the internal bimetal disc interrupts the electrical circuit to the burner or heating elements. As the system cools to