ICM Controls ICM450A Monitor 321042-401 With a standard 1/2" NPT

With a standard 1/2" NPT connection and a fixed 4" WC manifold pressure

allowing technicians to quickly troubleshoot ignition failure

provided the valve stroke matches the actuator's capabilities

Broad compatibility with Belimo LRB

The Lennox 57M66 Pressure Switch is a critical safety component designed for precise combustion air proving in high-efficiency gas furnaces

ICM Controls ICM450A Monitor 321042-401 With a standard 1/2" NPTThe ICM450A programmable 3 phase line voltage monitor provides essential protection against common electrical faults that lead to premature compressor and motor failure. Designed as a direct replacement for the ICM450, 6831, and F6872, this 3 phase voltage monitor tracks incoming power to prevent damage from phase loss, phase reversal, and voltage unbalance. For technicians working in the field, the backlit LCD simplifies setup, showing real time RMS