the BM-6043 and F-121500 are technically identical and interchangeable in all Champion 43G63 applications

2-pole line voltage thermostat engineered for high-capacity heating applications

and use the isolated red leads for your load connections to prevent backfeeding the control board

This is a single pole single throw (SPST) thermostat

Does this include the water seal kit

Daikin-McQuay 564-664 Expansion Valve 320074-702 the BM-6043 and F-121500 areThe Daikin McQuay 564 664 Expansion Valve is a critical liquid metering device engineered for precise refrigerant flow control in industrial HVAC and refrigeration systems. Designed to maintain constant superheat at the evaporator outlet, this thermal expansion valve (TXV) optimizes heat transfer efficiency across varying load conditions. It features a robust thermostatic element and a calibrated orifice assembly to prevent liquid slugging, ensuring