Hydrolevel Safgard 450 is a 120V non-cycling low water cut-off (LWCO), designed for use as a primary control on steam boilers (residential or light commercial). 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.
Features:
Suitable for residential and light commercial steam boilers
Connections for optional wiring to a water feeder
15-second off-time burner shut down delay prevents short-cycling due to surging and priming
30-second on-time delay allows automatic feeders or solenoid valves to fill water above probe to a safe level
Auto-reset - automatically restarts boiler after on-time 30-second delay
Multiple wiring options
Low maintenance - no blowdown or moving parts
Rugged solid state circuitry for top-level performance and reliability.
Technical Specifications:
System Type: Steam Boilers
Reset: Automatic
Connection: 3/4" NPT
Electrical Specs: 120V, 60 Hz, 4 VA (Power Consumption); SPDT (Relay Type), NEMA 1 Enclosure
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