It shares the same 1-inch NPT connections and 75 PSI relief setting

Proper installation by a licensed contractor is required to ensure correct venting system calibration and long-term operational reliability

Key Benefits: Ensures combustion safety by monitoring for blocked venting or inlet air restrictions

replacing a faulty 1873148 circuit board is often the direct solution to restore 24V control logic and operational stability

Grundfos 00595657 Aquastat Els PW 17895 It shares the same 1-inchThe 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