Taco LFM1203S-1 Low Water Cutoff (LWCO), 3/4″ NPT, Manual Reset 120V

Condition: New, in factory-sealed packaging.

Product Overview:

The Taco LFM1203S-1 Low Water Cutoff provides reliable protection for hydronic heating systems, ensuring boilers operate safely. This manual-reset LWCO halts boiler operation if water levels drop below safe thresholds, safeguarding against damage and hazards. It is equipped with advanced signal processing technology and DualVision to enhance accuracy and mitigate issues such as particulate buildup and foam interference.

The Taco LWCO can act as either the primary or secondary low water cutoff on low-pressure steam boilers, the primary limit control on hot water boilers or to protect pumps from running dry in condensate receiver tank applications. The LWCO can also activate alarm systems or automatic water feeders.

Key Specifications:

• Model Number: LFM1203S-1
• Connection Type: Threaded, NPT
• Connection Size: 3/4 Inch
• Voltage: 120V
• Max Fluid Temperature: 250°F
• Max Operating Pressure: 250 PSI
• Type: Electronic, probe-style control
• Reset Type: Manual
• Application: Hot water and low-pressure steam boilers.
• Dimensions:
  • Height: 5 43/48 Inches
  • Width: 4 5/12 Inches
  • Depth: 5 3/4 Inches
• Weight: 2.75 lbs

Features:

1. Manual Reset:
   • Ensures the system doesn’t restart automatically after a low-water event, allowing inspection before reactivation.
2. Signal Processing Technology:
   • Compensates for particulate buildup on the probe to maintain consistent performance.
3. DualVision Technology:
   • Differentiates between water and foam for more accurate operation.
4. Built-in Test Button:
   • Simplifies testing of the LWCO functionality.
5. Simplified Installation:
   • External LEDs and tri-barrier terminals make wiring and setup straightforward.
6. Durable Construction:
   • Built for residential and industrial environments, with NEMA-certified on-board or remote housings.
7. Versatility:
   • Can be used as a primary or secondary LWCO for boilers or as pump protection in condensate receiver tanks.

Applications:

• Hot Water Boilers: Ensures minimum safe operating levels for water-based systems.
• Steam Boilers: Protects low-pressure steam boilers, with an additional rating of 15 PSI for steam applications.
• Condensate Receiver Tanks: Prevents pumps from running dry.
• Alarm or Auto Feeder Activation: Works seamlessly with alarm systems or automatic water feeders for added safety.

Certifications:

• UL Listed
• CSA Listed
• NEMA Certified

Compatibility:

The Taco LFM1203S-1 is compatible with:

• Residential boilers for hydronic heating systems.
• Low-pressure commercial and industrial steam boilers.
• Systems requiring threaded NPT 3/4-inch probe connections.
• Applications requiring a manual-reset safety mechanism.
• It can replace similar probe-style LWCO systems from other manufacturers but verify with Taco or the boiler’s manufacturer for direct compatibility.

Pros:

• Advanced signal processing and DualVision improve reliability.
• Compatible with a wide range of boiler and tank systems.
• Durable, high-quality construction for demanding environments.
• Manual reset ensures thorough inspection post-event.

Cons:

• Limited to 120V systems; other models needed for different voltages.
• Requires specific installation expertise for optimal operation.

Comparable Products:

1. Hydrolevel Safgard 400 LWCO – Similar 120V manual-reset control for steam and hot water boilers.
2. McDonnell & Miller PS-801 – 24V/120V LWCO with comparable manual-reset functionality.
3. Weil-McLain LWCO Kits – Compatible with Weil-McLain boilers, offering alternative protection.

Keywords for Search and Listings:

• Taco LFM1203S-1 low water cutoff
• Manual-reset LWCO for hydronic boilers
• 3/4 NPT low-water sensor
• Boiler protection LWCO 120V
• Taco electronic probe low water cutoff

Disclaimer:

Taco is a trademark of Taco Comfort Solutions. The use of this name is for identification purposes only and does not imply endorsement. Ensure compatibility with your specific boiler model and consult installation manuals or a professional technician for proper setup and operation.

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