but always refer to the specific unit’s wiring diagram for maximum amperage and voltage limitations

the coil is the likely culprit

The MAMAC EP-313-315 features internal dip switches or jumpers that allow you to toggle between current (4-20mA) and voltage (0-5/0-10Vdc) settings instantly on-site

disc guide

Lochinvar & A.O. Smith 100296927 Pump Assembly 321702-401 but always refer to theFor mechanical contractors and facilities managers maintaining high output hydronic systems, the Lochinvar & A. O. Smith 100296927 Pump Assembly is the critical OEM solution for restoring factory spec circulation. This industrial grade circulator is engineered specifically for select Lochinvar boilers and A. O. Smith commercial water heaters, providing the precise head pressure and flow rate required to prevent thermal stacking and ensure efficient