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VR1816 ECM High-Efficiency Circulator

Variable speed ECM technology has come of age and with it, savings of up to 85% in electrical costs as compared to conventional circulators. The VR1816 ECM High-Efficiency Circulator (wet rotor) features infinitely variable fixed speed and 6 pressure presets to fit your job. It’s simple to install and intuitive to set up. Get into high-efficiency ECM savings with the turn of a dial – it’s efficiency uncomplicated.

Fixed Speed Mode

Fine tune the VR1816 ECM High-Efficiency Circulator flow rate to precisely match design load conditions. It is infinitely variable between min/max settings. Ideal for zoning with circulators.

Constant Pressure Mode

The VR1816 ECM High-Efficiency Circulator maintains a constant pressure differential in the system as the heating load increases or decreases. The best option for zoning with zone valves.

Proportional Pressure Mode

Maintains a variable pressure differential in the system as heating load increases or decreases. Flow will change in relationship to the change in pressure differential. The best option for panel radiators with TRV’s.

Instruction Sheet
Submittal Data
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Performance Data

Flow Range: 0-16 GPM
Head Range (ft): 0-18′
Max. Operating Pressure: 125 PSI
Max. Water Temp.: 230°F (110°C)
Min. Water Temp.: 36°F (2°C)
Voltage: 120V, 60 Hz Single phase
Operating Power: 4W-44W
Max. AMP Rating: 0.54

  • High-efficiency ECM motor uses up to 85% less electricity
  • Infinitely variable speed settings to fine tune flow for any system
  • SureStart®, a Taco exclusive feature, is your no-callback safety net. It automatically purges air and unblocks the pump to keep it trouble-free.
  • BIO Barrier® filter protects pump from system contaminants
  • Easy to use dial to set operating speed or pressure control
  • Operates in 3 Different Modes:
    • Infinitely Variable Fixed Speed
    • Constant Pressure
    • Self-adjusting, Variable Speed
    • Proportional Pressure — Self-adjusting, Variable Speed
  • 5 color LED displays:
    • Operating mode (Blue, Orange or Green)
    • Error code diagnostics (Red or White)
  • Use with a Taco ZVC Zone Valve Control or SR Switching Relay for ON/OFF operation
  • Dual electrical knock-outs
  • 6″ stranded wire leads for easy wiring
  • Double Insulated. No ground necessary.
  • Integral Flow Check (IFC®) included
  • Whisper quiet operation
  • Optional 2-way flange reduces SKU’s and provides universal fit-up to any flange position
  • Zoning with Circulator
  • Zoning with Valves
  • Panel Radiators with Thermostatic Radiator Valves (TRV)
  • Closed Loop Systems Only
  • Indoor Use Only
  • Water or maximum of 50% water/glycol solution
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