Magnitude™ Magnetic Bearing Centrifugal Chillers Catalog 602-2 Model WMC, B Vintage • 145 to 400 tons • 500 to 1400 kW • R-134a Engineered for flexibility and performance™

Cutaway View of Magnetic Bearing Compressor Compressor Major Running Gear Components Sensor Ring Sensor Ring

Modbus™ Applies to 60 HZ only *Unit Controllers are LONMARK certified with an optional LONWORKS communication module. Document: Original Issue Date: Revision Issue Date: Replaces: Software Version Manufactured in an ISO Certified Facility ©2013 Daikin Applied. Illustrations and data cover the Daikin product at the time of publication and we reserve the right to make changes in design and construction at anytime without notice. ™® The following are trademarks or registered trademarks of their respective companies: BACnet from ASHRAE; LONMARK, LonTalk, LONWORKS, and the LONMARK logo are managed,...

The New Compressor Technology For Magnitude™ Model WME information see Catalog 604 Next Generation Centrifugal Here Today The industry’s next generation of centrifugal chillers is here today with Daikin Magnitude chillers. The new technology begins with centrifugal compressors utilizing frictionless magnetic bearings for oil-free operation, integral variable-frequency drives, and high-speed direct drive technology. The high efficiency compressor is matched with highly efficient heat exchanges to make an impressive chiller. The control system is based on Daikin’s MicroTech II family to provide...

The Compressor Technology The advanced, magnetic bearing, permanent magnet synchronous motor technology used in Magnitude chillers offers many owner benefits. Figure 1, Compressor Cutaway 1. Magnetic Bearings and 2. 3. 4. 5. 6. Bearing Sensors Permanent Magnet Synchronous Motor Touchdown Bearings Shaft and Impellers Compressor Cooling VFD VFD = Ultra-Low IPLV The well-proven energy performance advantages of large central plant type variable-speed centrifugal chiller compressors now benefit mainstream, middle-market applications through the use of high-speed, centrifugal compression with integral...

Exceptional Control User-Friendly Touch Screen Panel Every Magnitude chiller is provided with the userfriendly operator interface touch screen panel mounted on the moveable positioning arm for easy viewing and operation. View chiller status, clear faults and change parameters by merely touching the screen. For added convenience, the unit operating and maintenance manual is viewable on the screen and can be downloaded and printed via the USB port located in the control panel. Shrink Your Utility Costs with Ultra Efficient Part-Load Performance The Magnitude chiller Integrated Part Load Value (IPLV)...

Extremely Low Vibration Levels As a result of the magnetic bearings and low inertia design, the compressor vibration levels are extremely low, minimizing vibration that could be transmitted to the structure. The unit is shipped with rubber mounting pads and spring vibration isolators are not required. enhancements not found in any other unit controller system on the market today. MicroTech controller's innovative design will help keep your chiller running efficiently . . . day in, day out, for years to come. Control Architecture The Magnitude chiller takes advantage of Daikin International’s...

MicroTech II ® Control Features and Benefits FEATURE Easy integration into Building Automation System (BAS) via the exclusive Open Choice™ communication module Designer can select any BAS supplier using standard open protocols and know the MicroTech II control will interface with it. Easy to read, adjustable, 15 inch, Super VGA color touch screen operator interface Operators can observe chiller operation and easily select various data screens and change setpoints Historic trend data-downloadable Water temperatures, refrigerant pressures, and motor load plots can provide valuable information for...

Figure 2, MicroTech II Home Screen The Daikin MicroTech controller can record and plot water temperatures, refrigerant pressures, and motor load in order to trend performance. These values can also be downloaded through a convenient USB port in the control panel, and exported into a spreadsheet for further evaluation and record purposes. Figure 4, Trend Logging Screen If an alarm occurs, a red button appears on the screen (a remote signal is also available). Pressing this button immediately accesses the Active Fault Screen that gives complete fault information. The problem can be fixed and the...

Demand limit control. Maximum motor current draw can be set on the panel, or can be adjusted from a remote 4-20 ma or 1-5 VDC BAS signal. This feature controls maximum demand charges during high usage periods. Condenser water temperature control. Capable of four stages of tower fan control plus an optional analog control of either a three-way tower-bypass valve or variable speed tower-fan motor. Stages are controlled from condenserwater temperature. The three-way valve can be controlled to a different water temperature or track the current tower stage. This allows optimum chilled water plant...

Figure 5, Sample System Architecture Table 1, Typical Data Point Availability Typical Data Points (W = Write, R = Read) 1 Capacity Limit Output Capacity Limit Setpoint Chiller Enable Chiller Limited Chiller Local/Remote Chiller Mode Output Chiller Mode Setpoint Chiller On/Off Chiller Status Compressor Discharge Temp Compressor Percent RLA Compressor Run Hours Compressor Select Compressor Starts Cond EWT Cond Flow Switch Status Cond LWT Cond Pump Run Hours Cond Refrigerant Pressure Cond Sat. Refrigerant Temp Cond Water Pump Status Evap EWT Evap Flow Switch Status Evap LWT for Unit Evap LWT for...

Unit Design Features Variable Frequency Drive Efficiency: The standard variable frequency drive is a technology that has been used for decades to control motor speed on a wide variety of motordrive applications. When applied to centrifugal compressor motors, significant gains in part load performance can be realized. The improvement in efficiency and reduction of annual energy cost is maximized when there are long periods of part load operation, combined with low compressor lift (lower condenser water temperatures). The attributes of VFD and the compressor technology produces one of the industry's...