Taco VR1816 ECM High-Efficiency Circulators for Hydronic Heating, Zone Valve Systems, Panel Radiators, and Closed-Loop HVAC Applications
Taco VR1816 ECM High-Efficiency Circulators are variable speed wet rotor circulators designed for closed-loop hydronic heating systems, zoning applications, and panel radiator systems with thermostatic radiator valves. Built with high-efficiency ECM motor technology, the VR1816 helps reduce electrical consumption while giving contractors a flexible circulator platform for different system control strategies.
The VR1816 is designed around three operating approaches: infinitely variable fixed speed, constant pressure, and proportional pressure. Fixed Speed Mode allows the circulator flow rate to be fine-tuned to match design load conditions, making it useful for systems zoned with circulators. Constant Pressure Mode maintains a constant pressure differential as heating load changes, making it well suited for zone valve systems. Proportional Pressure Mode adjusts the pressure differential as flow demand changes, making it a strong fit for panel radiators with thermostatic radiator valves.
With an easy-to-use dial, six pressure presets, and 5-color LED feedback for operating mode and diagnostics, the VR1816 is designed to make ECM setup simple in the field. Taco’s SureStart® feature automatically purges air and unblocks the pump, helping reduce callbacks, while the BIO Barrier® filter helps protect the pump from system contaminants.
The VR1816 also includes contractor-friendly installation details such as dual electrical knockouts, 6-inch stranded wire leads, double-insulated construction, Integral Flow Check, whisper-quiet operation, and optional 2-way flange compatibility for universal fit-up. With flow capacity up to 16 GPM, head up to 18 feet, 125 PSI maximum operating pressure, and 120V single-phase power, the Taco VR1816 is a practical high-efficiency replacement and upgrade option for residential and light commercial closed-loop hydronic systems.
Features
- ECM high-efficiency wet rotor circulator design
- Uses up to 85% less electricity than conventional circulators
- Variable speed operation for flexible system performance
- Infinitely variable fixed speed mode
- Constant pressure mode for zone valve systems
- Proportional pressure mode for panel radiators with TRVs
- Six pressure presets to fit different system requirements
- Easy-to-use dial for operating speed or pressure control
- SureStart® automatically purges air and unblocks the pump
- BIO Barrier® filter helps protect the pump from system contaminants
- 5-color LED display for operating mode and diagnostic feedback
- Integral Flow Check, or IFC®, included
- Dual electrical knockouts
- 6" stranded wire leads for easier wiring
- Double-insulated construction with no ground required
- Whisper-quiet operation
- Switching Relays for ON/OFF operation
Applications
- Closed-loop hydronic heating systems
- Zoning with circulators
- Zoning with zone valves
- Panel radiators with thermostatic radiator valves
- Residential heating systems
- Light commercial heating systems
- Variable speed circulator replacement
- Indoor hydronic circulation
- Water systems
- Water/glycol systems up to 50%
