Description
it is frequently used to provide the pilot signal for larger pneumatic actuators or positioners in HVAC sequences
making it suitable for both steam and liquid applications
What happens if the power supply is shared
the 63W40 prevents hazardous operation by interlocking the gas valve if flue obstructions or inducer failure are detected
Lennox 87J71 Sequencer 318518-761 it is frequently used toThe Lennox 87J71 Heat Sequencer is a critical OEM replacement component designed to manage the staging of electric heating elements in residential and light commercial air handlers. This upper heat sequencer functions as a thermal relay, utilizing a 24V solid state PTC heater to actuate a bimetal disc. By providing precise time delay intervals, it prevents massive inrush currents that could otherwise trip circuit breakers or damage the electrical