McDonnell & Miller 150S-M Pump Controller Refrigerant The Robertshaw 1950-002 Thermopile is

The Robertshaw 1950-002 Thermopile is a field-proven millivolt pilot generator engineered for self-powered gas control systems in wall furnaces

Technicians should verify the WC rating and normally open contacts during diagnostic cycles to prevent inducer motor pressure switch lockout

Broad Compatibility: Services a wide range of York-family equipment

High Force Output: Rated at 450N to ensure positive shut-off and stable positioning against system pressure

maintaining a strict safety boundary for field installations

McDonnell & Miller 150S-M Pump Controller Refrigerant The Robertshaw 1950-002 Thermopile isThe McDonnell & Miller 150S M is a commercial grade float type combination low water cut off and pump controller designed for steam boilers in high pressure industrial applications. Engineered for systems with a maximum pressure of 150 psi, this unit features a manual reset mechanism, ensuring that the burner circuit remains locked out following a low water event until a technician can verify the system's safety. The internal Monel bellows provides