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Integrating this fan delay switch into your system
provided the 5/16" thread and OD requirements are met
Multi-Stage Logic: Supports 2-stage 3-speed operations to optimize comfort and energy consumption during partial-load conditions
75" ensure a proper fit within the combustion chamber
High-Speed Efficiency: The 3000 RPM output ensures reliable drafting through restrictive high-efficiency heat exchangers
McDonnell & Miller 93-M Pump Controller 30067439-890 Integrating this fan delay switchThe 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
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