Resideo TH105PLUS Programmable Thermostat R-22 The plug-in relay design allows

The plug-in relay design allows for "hot-swapping" or quick field replacements without the need to de-solder connections

This specific model is a CW rotation (Clockwise) unit

this ignitor control board is a certified cross-reference for specific Bryant and Payne models that share the Carrier internal architecture

this 24-inch fan blade features a CCW (Counter-Clockwise) rotation as viewed from the discharge side

this 71L17 pressure switch hose is the standard for resolving "Pressure Switch Open" or "Stuck Closed" fault codes (often alerts 223 or 224 in Lennox communicating systems) caused by cracked

Resideo TH105PLUS Programmable Thermostat R-22 The plug-in relay design allowsThe Resideo TH105PLUS is a high performance line voltage programmable thermostat purposefully engineered for precise control of electric baseboard heaters, convectors, and fan forced heating systems. Operating on a 120 240 Vac supply, this unit features advanced Triac switching technology, which provides 100% silent operation by eliminating the mechanical clicking common in traditional relay based models. Industrial grade Triac for electric heat