McDonnell & Miller 93-M Pump Controller 30067439-890 it must be properly vented

it must be properly vented through the roof or a chimney to safely exhaust combustion byproducts

You should exclusively use Schneider Electric AH series high-temperature actuators with the VS2325 for steam applications to prevent premature component failure

often supporting both orientations depending on the unit's cabinet design

Is this part compatible with the old B1360713 switch

Broad Fluid Range: Rated for a specific gravity range of 0

McDonnell & Miller 93-M Pump Controller 30067439-890 it must be properly ventedThe McDonnell & Miller 93 M is a commercial grade combination low water cut off and pump controller designed specifically for steam boiler applications. Engineered for systems with a maximum steam pressure of 150 PSI, this unit features dual snap acting manual reset SPDT switches. These switches provide decisive electrical contact, preventing the rapid cycling or "chattering" often found in mercury free alternatives during turbulent water level