Grundfos 00595657 Aquastat 320788-704 you can wire it to

you can wire it to either open or close the circuit on temperature rise

and all necessary body bolts and O-rings required for a full internal rebuild

Dual Voltage Versatility: Operates on either 115V or 230V (50/60 Hz) without needing manual jumpers

the furnace will likely display a diagnostic code and fail to ignite

Field Serviceable Design: Large flat diaphragm construction permits easy removal and replacement

Grundfos 00595657 Aquastat 320788-704 you can wire it toThe Grundfos 00595657 Aquastat is a high temp thermostatic control kit specifically engineered for UP Series circulator pumps. Designed for professional hydronic heating and domestic hot water applications, this 3 4" clip on aquastat mounts directly onto 7 8" OD copper tubing to ensure precise thermal management. The bi metallic, snap acting disc provides responsive control, activating the pump when temperatures drop to 105F and deactivating it once