McDonnell & Miller 93-M Pump Controller R-410A twisted-pair wiring is recommended for

twisted-pair wiring is recommended for long runs

Its heavy-duty construction and ball bearing mechanism support reversible rotation (CW/CCW) to match specific blower wheel configurations found in the field

this flat-style igniter is engineered to function reliably with both natural gas and liquid propane (LP) burner systems

The Robertshaw Y-30128-AF35 Gas Valve is a heavy-duty bimetal gas control valve engineered for precision flow management in residential and commercial gas appliances

McDonnell & Miller 93-M Pump Controller R-410A twisted-pair wiring is recommended forThe 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