400 Series

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  • 15 Second Burner Off Delay
  • 30 Second Burner On Delay
  • Automatic Reset
  • Low Water Indicating Light
  • Direct Boiler Mounting  Eliminates Blowdowns
Specifications Model 400 Model 450
Power Consumption 2 VA 4 VA
Switching Capacity 50 VA 5.8 FLA, 34.8 LRA
Switch Contacts SPDT SPDT
Max. Pressure 15 PSI 15 PSI
  24 VAC
  120 VAC

Burner circuit contacts open after 15 second delay in a low water condition. Delay prevents short cycling caused by momentary fluctuations in the boiler water level. Automatically reactivates burner circuit 30 seconds after water reaches the probe, allowing optional water feeder to raise water level above the probe.