Velocity Boiler Works (Crown) 400821 LWCO
Maintain critical safety in steam systems with the Velocity Boiler Works 400821 LWCO. This Hydrolevel CycleGard CG-400 series control uses advanced conductance-sensing technology to monitor water levels without the mechanical failure points found in traditional float-style cut-offs. As a veteran technician knows, surging and foaming in steam boilers can lead to false readings; this unit leverages Intermittent Level Test (ILT) logic to periodically cycle the burner, allowing the water level to settle for a precise, "true" reading. This ensures the burner only fires when safe, preventing dry-fire conditions that cause catastrophic heat exchanger damage.
The 400821 low water cut-off features a 3/4" NPT probe and is designed for 24VAC operation. Its integrated 15-second burner-off delay prevents nuisance shutdowns caused by momentary water line fluctuations, while the 30-second burner-on delay provides ample time for an automatic water feeder to replenish the system. With SPDT switch contacts and rugged solid-state circuitry, this steam boiler LWCO is the industry standard for reliable, low-maintenance protection in both residential and light commercial applications.
Key Benefits- Intermittent Level Test (ILT) technology effectively eliminates false signals caused by foaming or volatile water conditions.
- Solid-state 3/4" probe provides high-accuracy longitudinal sensing without moving parts that can scale or hang up.
- Burner-off time delay (15 seconds) significantly reduces short-cycling during periods of surging and priming.
- Direct boiler mounting simplifies the installation process by utilizing existing 3/4" NPT tappings.
- LED status indicators provide immediate visual diagnostic feedback for low water conditions and test cycles.
Is the 400821 compatible with automatic water feeders?
Yes, the SPDT contacts are designed to signal secondary devices like the Hydrolevel VXT water feeder to restore safe operating levels without manual intervention.
Can I use Teflon tape on the probe threads?
Avoid excessive use of thread sealant or tape; the probe requires a clean metal-to-metal contact with the boiler shell to establish a proper electrical ground for sensing.
How often should the probe be inspected?
Technicians should pull and inspect the probe annually to remove any sediment or scale build-up, ensuring the conductance signal remains strong.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $345.68
-65%$345.68
$120.99Velocity Boiler Works (Crown) 400821 LWCO
Maintain critical safety in steam systems with the Velocity Boiler Works 400821 LWCO. This Hydrolevel CycleGard CG-400 series control uses advanced conductance-sensing technology to monitor water levels without the mechanical failure points found in traditional float-style cut-offs. As a veteran technician knows, surging and foaming in steam boilers can lead to false readings; this unit leverages Intermittent Level Test (ILT) logic to periodically cycle the burner, allowing the water level to settle for a precise, "true" reading. This ensures the burner only fires when safe, preventing dry-fire conditions that cause catastrophic heat exchanger damage.
The 400821 low water cut-off features a 3/4" NPT probe and is designed for 24VAC operation. Its integrated 15-second burner-off delay prevents nuisance shutdowns caused by momentary water line fluctuations, while the 30-second burner-on delay provides ample time for an automatic water feeder to replenish the system. With SPDT switch contacts and rugged solid-state circuitry, this steam boiler LWCO is the industry standard for reliable, low-maintenance protection in both residential and light commercial applications.
Key Benefits- Intermittent Level Test (ILT) technology effectively eliminates false signals caused by foaming or volatile water conditions.
- Solid-state 3/4" probe provides high-accuracy longitudinal sensing without moving parts that can scale or hang up.
- Burner-off time delay (15 seconds) significantly reduces short-cycling during periods of surging and priming.
- Direct boiler mounting simplifies the installation process by utilizing existing 3/4" NPT tappings.
- LED status indicators provide immediate visual diagnostic feedback for low water conditions and test cycles.
Is the 400821 compatible with automatic water feeders?
Yes, the SPDT contacts are designed to signal secondary devices like the Hydrolevel VXT water feeder to restore safe operating levels without manual intervention.
Can I use Teflon tape on the probe threads?
Avoid excessive use of thread sealant or tape; the probe requires a clean metal-to-metal contact with the boiler shell to establish a proper electrical ground for sensing.
How often should the probe be inspected?
Technicians should pull and inspect the probe annually to remove any sediment or scale build-up, ensuring the conductance signal remains strong.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
Maintain critical safety in steam systems with the Velocity Boiler Works 400821 LWCO. This Hydrolevel CycleGard CG-400 series control uses advanced conductance-sensing technology to monitor water levels without the mechanical failure points found in traditional float-style cut-offs. As a veteran technician knows, surging and foaming in steam boilers can lead to false readings; this unit leverages Intermittent Level Test (ILT) logic to periodically cycle the burner, allowing the water level to settle for a precise, "true" reading. This ensures the burner only fires when safe, preventing dry-fire conditions that cause catastrophic heat exchanger damage.
The 400821 low water cut-off features a 3/4" NPT probe and is designed for 24VAC operation. Its integrated 15-second burner-off delay prevents nuisance shutdowns caused by momentary water line fluctuations, while the 30-second burner-on delay provides ample time for an automatic water feeder to replenish the system. With SPDT switch contacts and rugged solid-state circuitry, this steam boiler LWCO is the industry standard for reliable, low-maintenance protection in both residential and light commercial applications.
Key Benefits- Intermittent Level Test (ILT) technology effectively eliminates false signals caused by foaming or volatile water conditions.
- Solid-state 3/4" probe provides high-accuracy longitudinal sensing without moving parts that can scale or hang up.
- Burner-off time delay (15 seconds) significantly reduces short-cycling during periods of surging and priming.
- Direct boiler mounting simplifies the installation process by utilizing existing 3/4" NPT tappings.
- LED status indicators provide immediate visual diagnostic feedback for low water conditions and test cycles.
Is the 400821 compatible with automatic water feeders?
Yes, the SPDT contacts are designed to signal secondary devices like the Hydrolevel VXT water feeder to restore safe operating levels without manual intervention.
Can I use Teflon tape on the probe threads?
Avoid excessive use of thread sealant or tape; the probe requires a clean metal-to-metal contact with the boiler shell to establish a proper electrical ground for sensing.
How often should the probe be inspected?
Technicians should pull and inspect the probe annually to remove any sediment or scale build-up, ensuring the conductance signal remains strong.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
