Lennox 87J71 Sequencer 318518-761 Smith 100295916 O-rings provide superior

Smith 100295916 O-rings provide superior resistance to the chemical reactions occurring within the neutralizing media

the 63W40 prevents hazardous operation by interlocking the gas valve if flue obstructions or inducer failure are detected

reducing labor time during maintenance or troubleshooting

it is frequently used to provide the pilot signal for larger pneumatic actuators or positioners in HVAC sequences

valve must be used to ensure safe manifold pressure levels

Lennox 87J71 Sequencer 318518-761 Smith 100295916 O-rings provide superiorThe 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