Taco VR1816 - Viridian High-Efficiency Variable Speed Circulator Pump - Cast Iron, Universal Flanged

The Taco VR1816-HY2-4C2A00 is a high-efficiency, variable-speed hydronic circulator pump with a wet rotor and durable cast iron body. Designed for closed-loop heating systems, this model is part of Taco’s Viridian 00e series, delivering flexible performance with low energy use. It is not intended for potable water applications.

Specifications

Flow rate: 0 to 16 gallons per minute (GPM)
Maximum head: 18 feet
Operating pressure (max): 125 pounds per square inch (psi)
Operating temperature: Maximum 230°F (110°C), Minimum 36°F (2°C)
Motor speed: 1,590 to 4,830 rotations per minute (RPM)
Voltage: 120V, 60 Hz, single phase
Horsepower: 1/25 HP
Maximum amperage: 0.54 amps
Power consumption: 4 to 44 watts

Features

High-efficiency ECM motor: Uses up to 85% less electricity than traditional circulators
Variable speed settings: Adjustable with three operation modes (infinitely variable fixed speed, constant pressure, proportional pressure)
Operating mode presets: Six pressure presets simplify setup for different systems
SureStart®: Automatically unblocks the pump and purges air to prevent call-backs
Built-in diagnostics: Five-color LED displays operating mode and diagnostic error codes
Integral Flow Check (IFC): Included in carton, eliminating need for an external check valve
BIO Barrier®: Protects the pump from contaminants within the system
Quiet operation: Engineered for whisper-quiet performance
Universal flange: Fits pipe sizes from 3/4 to 1 1/2 inches for flexible installation
Dual knockouts: Two electrical knockouts and 6-inch stranded wire leads for easy wiring
Double insulated: No ground connection required

Applications

Closed-loop hydronic heating systems
Residential and light commercial circulation
High-efficiency system upgrades requiring variable speed control

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VR1816 - Viridian High-Efficiency Variable Speed Circulator Pump - Cast Iron, Universal Flanged