Weil McLain 510-312-150 Operating Limit THPU32HP7Y installing this HVAC selection board

installing this HVAC selection board ensures the system operates within its engineered performance envelope

and M1MB models

Vibration Resistance: Built to withstand the mechanical stress of HVACR compressor operations without nuisance tripping

allowing the piston actuator to maintain its full rated stroke without adding significant resistance

Weil McLain 510-312-150 Operating Limit THPU32HP7Y installing this HVAC selection boardThe Weil McLain 510 312 150 Operating Limit is a professional grade combination operating limit and fixed high limit temperature control engineered for hydronic heating systems. This dual function component is a primary safety and control interface for Weil McLain EG, EGH, and PFG boilers, specifically optimized for sizes 85 and 95. It features a versatile operating temperature range of 140F to 240F and a factory set fixed high limit at 240F to