this ReliaTel communication module interface is engineered for seamless integration with 3 to 10-ton packaged rooftop units and 6 to 25-ton split systems

Precise Thermal Control: Solid wax hydraulic thermostat provides accurate mixing within +/- 3°F to meet ASSE 1017 standards

this part is an OEM-specific replacement gasket

you can typically "up-rate" a contactor as long as the coil voltage (24V) and the number of poles match

Heil Quaker ICP 17222000A64034 Control Board 320734-701 this ReliaTel communication module interfaceThe Heil Quaker ICP 17222000A64034 Control Board is a critical OEM inverter assembly engineered for high efficiency HVAC operations. As a direct replacement for part 17122000015997, this board is designed to interface with the inverter compressor and outdoor fan motor, providing precise frequency modulation to maintain setpoint stability. This assembly supports advanced DC voltage rectification and IGBT switching to simulate the three phase AC output