unlike manual versions that require a physical button press

using genuine Lennox parts like the 28W38 ensures precise fitment without the rattling or vibration common in universal aftermarket alternatives

supporting a maximum pressure of 175 PSI and temperatures up to 250°F

Internal Protection: Acts as a safeguard by containing the flame within intended combustion zones

Titus HVAC D21-TS Thermistor 323613-751 unlike manual versions that requireThe Titus HVAC D21 TS Relay Thermistor Thermostat Signal is a high precision electronic controller engineered for industrial grade thermal management. Designed for seamless integration into terminal unit control sequences, the D21 TS thermistor provides critical temperature feedback to the system's logic board, ensuring stable environmental regulation. This HVAC relay thermistor is compatible with 24 VAC control voltages and features a specialized DC