Weil McLain 510-312-150 Operating Limit Refrigerant and 200 unit sizes within

and 200 unit sizes within the UDAP

maintaining stable setpoints for critical cooling inventory

Key Benefits Broad Compatibility: Serves as a direct millivolt system replacement for Robertshaw TP-75 and competitive 2-lead models

For systems exceeding 30 psig

the specific bore size

Weil McLain 510-312-150 Operating Limit Refrigerant and 200 unit sizes withinThe 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