an open circuit or infinite resistance indicates a fractured element requiring immediate replacement

Precise Fitment: Engineered to replace Fasco H8

Key Technical Benefits Rapid Ignition Sequence: Features 0-second prepurge for immediate burner activation upon 24V signal

Genuine OEM Nordyne part guarantees drop-in compatibility and reduces installation time

Precise Capacity Control: The full port design ensures maximum flow capacity while the normally closed safety feature prevents unintended downstream flow

Belimo SY4-120MFT Actuator R-22 an open circuit or infiniteThe Belimo SY4 120MFT is a high torque, non spring return industrial actuator designed for precise control of large butterfly and ball valves. Delivering 3560 in lb of torque, this unit operates on 120VAC and utilizes Multi Function Technology (MFT), allowing for field adjustable input signals. Whether your site requires 4 20mA control (via 500 Ohm internal resistance), PWM control (via 1500 Ohm), floating point, or standard on off actuation, the SY4