Belimo B278+AFRX24-MFT-S Valve Assembly 328140-751 Bearing wear or debris in

Bearing wear or debris in the blower wheel are the typical culprits

and "FAN" (Condenser Fan) terminals

As a direct OEM replacement heat kit

this non-potable hydronic expansion tank prevents dangerous pressure surges that trigger relief valve discharge

Belimo B278+AFRX24-MFT-S Valve Assembly 328140-751 Bearing wear or debris inThe Belimo B278+AFRX24 MFT S is a high performance 2 way characterized control valve assembly engineered for demanding HVAC applications requiring precise hydronic regulation. Featuring a 3 inch NPT internal thread connection and a high 130 Cv rating, this assembly utilizes a stainless steel ball and stem to ensure long term reliability and resistance against scaling or corrosion. The characterized control valve (CCV) design incorporates a specialized