McDonnell & Miller 157S-RLS-MD Control 30067439-890 Is this board a direct

Is this board a direct replacement for my original Honeywell ST9120C

Compatible with high-capacity Copeland scroll motor-compressors from 7

Maintains consistent 24Vac output to ensure optimal performance of sensitive 24V thermostats and building automation sensors

Verify your unit's model number on the data plate

this drier is the industry standard for field replacement and OEM self-contained systems

McDonnell & Miller 157S-RLS-MD Control 30067439-890 Is this board a directThe McDonnell & Miller 157S RLS MD (Part Number 177251) is a high performance mechanical combination low water cut off and pump controller designed for commercial and industrial steam boilers. Engineered for high pressure applications up to 150 psi, this unit features a maximum differential operation that effectively prevents nuisance burner shutdowns in systems experiencing rapid water level fluctuations. Its integral water column design simplifies