Maxitrol TD121A Selector Freon This specific model is calibrated

This specific model is calibrated for hydronic (hot water) systems

Engineered with an isolated coil configuration

Field Conversion Ready: Designed specifically to adapt 700 and 710 Series manual valves to 120VAC thermostat control

the internal bi-metal disc may have fatigued

The Bard HVAC 8402-096BX Thermal Cutoff is a critical safety component designed for precise overheat protection in Bard climate control systems

Maxitrol TD121A Selector Freon This specific model is calibratedThe Maxitrol TD121A is a precision remote temperature selector engineered for high accuracy atmospheric gas fired heating systems. Designed for use with the Selectra series modulation systems, this component provides a specific setpoint range of 80F to 130F. As a veteran technician knows, maintaining the integrity of the electronic modulation signal is critical; the TD121A ensures stable communication with the amplifier to modulate the gas valve based