Hydrolevel 500SV Safgard Low Water Cut-Off 24V Manual Reset with Short Probe

The Hydrolevel 500SV Safgard is an electronic low water cut-off designed for commercial hot water boilers and can also serve as a secondary low water cut-off on steam boilers. This 24VAC unit features manual reset functionality with an integrated test button and LED indicating lights to ensure reliable boiler protection.

Key Features:

• Electronic low water cut-off with 24VAC, 60 Hz operation (3.6 VA power consumption)
• Manual reset prevents automatic restart, ensuring operator awareness of low water conditions
• Shorter EL1214-SV ceramic probe designed for mounting in standard reducing tees and short clearance installations
• Test button allows burner circuit verification without lowering water level
• LED indicating lights provide visual status confirmation
• SPDT switch contacts with 5.8A full load and 34.8A locked rotor capacity at 24VAC
• 50 VA pilot duty alarm contact rating
• 15-second burner off delay and 30-second burner on delay for stable operation
• 316 stainless steel probe tip with brass probe nut and galvanized steel housing
• Rated for 160 PSI maximum pressure and 250°F water temperature
• 3/4-inch NPT threaded connection
• Meets ASME CSD-1 requirements for commercial water boilers

The Hydrolevel 500SV uses water as a conductor to complete the circuit between the ceramic probe and the boiler shell. When water is in contact with the probe, the circuit remains closed and the burner can operate. If the water level drops below the probe, the circuit opens and the control immediately de-energizes the burner circuit to prevent dangerous low water conditions and potential boiler damage.