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New Products Taco Viridian Circulators

Taco Viridian Circulators


Viridian High Efficiency Circulators By Taco

ViridianThe Taco Viridian is a web-enabled, high efficiency, wet rotor, variable speed commercial pump product line for chilled and hot water applications. All settings and pump access can be done over an internet connection making installation, setup and service easy. The ECM motor saves up to 80% of the electrical energy compared with conventional pumps and its multiple operating modes fit most applications.

Efficiency as the Basis of Design

The ECM based design combines a brushless electronically commutated synchronous motor with a strong permanent magnet rotor. An ECM motor does not consume any energy in order to magnetize the rotor and the position of the magnetic poles of the rotor and stator generate continuous thrust in the rotating direction of the rotor. The integral electronics precisely drive the rotor as fast as the rotating flux, significantly reducing motor efficiency losses while greatly increasing starting torque.

Full Variable Speed Control Matches System Requirements

The electronics continually change the power adjustment (speed) tomatch the requirements of the system. Because the electrical motor is being driven by an onboard frequency converter with an integrated PFC filter the supplied electric current is rectified and converted into the appropriate shape to maximize energy efficiency, even when operating at hydraulic partial load conditions.The superior motor efficiency, optimized speed control, and intelligent sensorless variable speed pump control delivers dramatic cost savings over the life of the system.

Flexibility to Fit the Job

The hydraulic characteristics of the pump can be set at will. Pump regulation can be done by pressure, speed, electrical power or a combination of these, so it can be adapted to different hydraulic systems requirement without the need for external regulators or sensors.

Ready-to-go out of the box, the Viridian will automatically adjust its speed based on internally sensed variable differential pressure control, providing optimal energy savings across the industry’s largest operating range. Additional modes of control can be selected to provide constant pressure control, proportional pressure control, constant curve duty (uncontrolled pump), RPM regulation or power limitation control.

The Viridian pumps can be operated as single or parallel variable speed pumps. The onboard electronics allows the user to choose to run dual pumps in parallel, standby or alternating modes. The built-in normally open, common and normally closed relay contacts can be used to activate or deactivate a primary or secondary pump contact, actuate a damper for combustion air or switch another piece of equipment. In addition, the Viridian comes standard with 2 external digital inputs and 1 external digital output to be available for additional mechanical room control.

Heating, Air Conditioning or Chilled Water Systems

Taco Viridian pumps are built around exacting specifications to meet the widest range of closed loop hydronic heating and cooling applications.They are suitable for use with fluids at temperatures from 14°-230°F (-10°- 110°C), feature 175psi working pressure and have a stainless steel impeller and shaft. Continuous duty rated with a built-in soft start-up circuit the VR15 and VR20 can accept 110-240volts and the VR25 and VR30 operateon 230-240 volts supply power.

Lower Installation, Commissioning and TCO Costs

A simple ethernet connection on the pump gives instant remote control, monitoring and adjustment without requiring highly skilled network IT orcommissioning personnel. Any Viridian pump can be accessed directly through a common cross-over cable from a connected laptop or through a web enabled computer or smartphone.

The in-line design and standard ANSI class 125 flanges make for a technician friendly installation. The pump and motor form an integral unit without a mechanical seal. The bearings are lubricated by the pumped fluid, ensuring years of quite, maintenance free operation.

To protect your investment in the Viridian it provides over current, line surge and current limit protection, thermal monitoring, heat sink status and over temperature protection.

Given all the advantages stated above,the total cost of ownership (TCO) of a Viridian pump is by far the lowest for its performance range.

Web Based Simplicity

Viridian_Performance__GraphSimply launch any common browser, like Internet Explorer or Firefox,type in “VIRIDIAN” or the pump’s IPaddress in the browser’s address line and you have instant, automaticand full control over the pump(s).The HTTP or FTP protocol ensures a user-friendly, commonly used environment.

The Environment is Always a Consideration

Not only do these pumps use 80% less energy than a standard commercial pump but we also made the choice to use components, processes and manufacturing capabilities which keep the environment n mind. For instance all ofthe magnets used in the Viridian are time stable, non-toxic ceramic magnets as opposed to the more widely used rare earth Neodium compounds which are sourced only from Chinese mines.

ADA CompliantNo
Housing MaterialCast Iron
Impeller MaterialStainless Steel
Industry StandardsUL Listed for Indoor Use Only
Inlet Size1-1/2", 2", 2-1/2", 3"
Manufacturer Product LineViridian Series
Motor EnclosureClass 2, IP44
Motor TypeECM
Mounting TypeHorizontal, Vertical
Number of Phases1
Outlet Size1-1/2", 2", 2-1/2", 3"
Working Pressure175 psi
Working Temperature230 deg F

Last Updated on Thursday, 19 June 2014 14:27 


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1010 North D Street
Sacramento, CA 95811

P (916) 451-5858
F (916) 451-8417


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