Velocity Boiler Works (Crown) 105591-01 LWCO
When you are responding to a "no heat" call on a high-efficiency condensing unit, a faulty Low Water Cut Off (LWCO) is often the silent culprit behind a hard lockout. The Velocity Boiler Works (Crown) 105591-01 LWCO is the direct OEM replacement engineered for the Phantom 80-180 and the full Raptor series. This 24 VAC safety device utilizes advanced PHNTM technology, integrating multi-level sensing to provide precise water level monitoring without the failure rates associated with mechanical float switches in tight heat exchangers.
Designed for professional-grade reliability, this probe-type LWCO features 3/4" NPT threading and a rugged stainless steel sensor capable of withstanding system pressures up to 160 PSI. Whether you are performing a boiler safety control replacement or upgrading a hydronic heating system, this auto-reset LWCO ensures the burner circuit is interrupted before low-water conditions lead to flashed steam or cracked heat exchanger sections. The 105591-01 is a critical Crown boiler replacement part for maintaining ASME CSD-1 compliance and ensuring long-term HVAC system protection in residential and light commercial applications.
Key Benefits- Precision Sensing: Employs PHNTM multi-level technology for accurate water detection, eliminating the "hanging up" issues common with older float-style devices.
- Direct OEM Compatibility: Purpose-built for Phantom 80-180 and all Raptor boilers, ensuring seamless integration with existing Sage controls.
- High-Pressure Tolerance: Rated for operations up to 160 PSI, making it suitable for high-demand hydronic loops.
- Durable Construction: Features stainless steel and brass wet components to resist corrosion and scale buildup.
- Safety Compliance: Acts as an essential low water safety switch to prevent dry firing and catastrophic equipment failure.
Is the 105591-01 an auto-reset or manual-reset device?
This specific model is the auto-reset LWCO. It is designed to automatically restore the burner circuit once the water level returns to a safe operating range above the probe, though the boiler’s primary control may still require clear-down of any logged soft lockouts.
Can I use this on a steam system?
While designed primarily for the Phantom and Raptor hydronic series, the sensor's materials are rated for steam boiler safety environments; however, always verify the specific terminal voltage (24 VAC) and control logic requirements against the manufacturer’s wiring diagram.
What are the signs of a failing LWCO probe?
Technicians typically see frequent hard lockouts or the boiler refusing to fire despite having a green light on the transformer. If the probe is coated in minerals or the internal circuitry has shorted, it will fail to complete the 24V end-switch circuit.
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: $186.35
-65%$186.35
$65.22Velocity Boiler Works (Crown) 105591-01 LWCO
When you are responding to a "no heat" call on a high-efficiency condensing unit, a faulty Low Water Cut Off (LWCO) is often the silent culprit behind a hard lockout. The Velocity Boiler Works (Crown) 105591-01 LWCO is the direct OEM replacement engineered for the Phantom 80-180 and the full Raptor series. This 24 VAC safety device utilizes advanced PHNTM technology, integrating multi-level sensing to provide precise water level monitoring without the failure rates associated with mechanical float switches in tight heat exchangers.
Designed for professional-grade reliability, this probe-type LWCO features 3/4" NPT threading and a rugged stainless steel sensor capable of withstanding system pressures up to 160 PSI. Whether you are performing a boiler safety control replacement or upgrading a hydronic heating system, this auto-reset LWCO ensures the burner circuit is interrupted before low-water conditions lead to flashed steam or cracked heat exchanger sections. The 105591-01 is a critical Crown boiler replacement part for maintaining ASME CSD-1 compliance and ensuring long-term HVAC system protection in residential and light commercial applications.
Key Benefits- Precision Sensing: Employs PHNTM multi-level technology for accurate water detection, eliminating the "hanging up" issues common with older float-style devices.
- Direct OEM Compatibility: Purpose-built for Phantom 80-180 and all Raptor boilers, ensuring seamless integration with existing Sage controls.
- High-Pressure Tolerance: Rated for operations up to 160 PSI, making it suitable for high-demand hydronic loops.
- Durable Construction: Features stainless steel and brass wet components to resist corrosion and scale buildup.
- Safety Compliance: Acts as an essential low water safety switch to prevent dry firing and catastrophic equipment failure.
Is the 105591-01 an auto-reset or manual-reset device?
This specific model is the auto-reset LWCO. It is designed to automatically restore the burner circuit once the water level returns to a safe operating range above the probe, though the boiler’s primary control may still require clear-down of any logged soft lockouts.
Can I use this on a steam system?
While designed primarily for the Phantom and Raptor hydronic series, the sensor's materials are rated for steam boiler safety environments; however, always verify the specific terminal voltage (24 VAC) and control logic requirements against the manufacturer’s wiring diagram.
What are the signs of a failing LWCO probe?
Technicians typically see frequent hard lockouts or the boiler refusing to fire despite having a green light on the transformer. If the probe is coated in minerals or the internal circuitry has shorted, it will fail to complete the 24V end-switch circuit.
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
When you are responding to a "no heat" call on a high-efficiency condensing unit, a faulty Low Water Cut Off (LWCO) is often the silent culprit behind a hard lockout. The Velocity Boiler Works (Crown) 105591-01 LWCO is the direct OEM replacement engineered for the Phantom 80-180 and the full Raptor series. This 24 VAC safety device utilizes advanced PHNTM technology, integrating multi-level sensing to provide precise water level monitoring without the failure rates associated with mechanical float switches in tight heat exchangers.
Designed for professional-grade reliability, this probe-type LWCO features 3/4" NPT threading and a rugged stainless steel sensor capable of withstanding system pressures up to 160 PSI. Whether you are performing a boiler safety control replacement or upgrading a hydronic heating system, this auto-reset LWCO ensures the burner circuit is interrupted before low-water conditions lead to flashed steam or cracked heat exchanger sections. The 105591-01 is a critical Crown boiler replacement part for maintaining ASME CSD-1 compliance and ensuring long-term HVAC system protection in residential and light commercial applications.
Key Benefits- Precision Sensing: Employs PHNTM multi-level technology for accurate water detection, eliminating the "hanging up" issues common with older float-style devices.
- Direct OEM Compatibility: Purpose-built for Phantom 80-180 and all Raptor boilers, ensuring seamless integration with existing Sage controls.
- High-Pressure Tolerance: Rated for operations up to 160 PSI, making it suitable for high-demand hydronic loops.
- Durable Construction: Features stainless steel and brass wet components to resist corrosion and scale buildup.
- Safety Compliance: Acts as an essential low water safety switch to prevent dry firing and catastrophic equipment failure.
Is the 105591-01 an auto-reset or manual-reset device?
This specific model is the auto-reset LWCO. It is designed to automatically restore the burner circuit once the water level returns to a safe operating range above the probe, though the boiler’s primary control may still require clear-down of any logged soft lockouts.
Can I use this on a steam system?
While designed primarily for the Phantom and Raptor hydronic series, the sensor's materials are rated for steam boiler safety environments; however, always verify the specific terminal voltage (24 VAC) and control logic requirements against the manufacturer’s wiring diagram.
What are the signs of a failing LWCO probe?
Technicians typically see frequent hard lockouts or the boiler refusing to fire despite having a green light on the transformer. If the probe is coated in minerals or the internal circuitry has shorted, it will fail to complete the 24V end-switch circuit.
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.
