Goodman WMC145D User Manual

Engineered for flexibility and performance™
Magnitude™ Magnetic Bearing Centrifugal Chillers Catalog 602-2
Model WMC, B Vintage • 145 to 400 tons • 500 to 1400 kW • R-134a
Cutaway View of Magnetic Bearing Compressor
MicroTech II® Controller Operator Interface, Home Screen
Table of Contents
Manufactured in an ISO Certified Facility
Document: Catalog 602-2
Modbus
Applies to 60 HZ only
The New Compressor Technology ........................................................................................................................ 4
Benefit Summary ............................................................................................................................................ 4
The Compressor Technology .......................................................................................................................... 5
Low Operating Costs ...................................................................................................................................... 6
Environmental Responsibility ........................................................................................................................ 6
Unit Control Features ..................................................................................................................................... 7
MicroTech II ® Control Features and Benefits ................................................................................................ 8
Unit Design Features ........................................................................................................................................... 12
Chiller Identification ........................................................................................................................................... 16
Sound Data ........................................................................................................................................................... 17
One-Third Octave Band ................................................................................................................................ 17
Dimensions ........................................................................................................................................................... 19
Marine Water Box Dimensions ..................................................................................................................... 25
Physical Data and Weights ................................................................................................................................. 27
Physical Data ................................................................................................................................................ 28
Relief Valves ......................................................................................................................................................... 29
Electrical Data ..................................................................................................................................................... 30
Power Factor Correction ............................................................................................................................... 40
VFD Line Harmonics ................................................................................................................................... 40
Application Considerations ................................................................................................................................ 42
Location ........................................................................................................................................................ 42
Optimum Water Temperatures and Flow ...................................................................................................... 42
System Water Volume ................................................................................................................................... 44
Pump Control ................................................................................................................................................ 44
Retrofit Knockdown ..................................................................................................................................... 45
Pressure Drop Curves ................................................................................................................................... 46
Options and Accessories...................................................................................................................................... 49
Refrigerant Recovery Units ................................................................................................................................ 51
Refrigerant Monitors .......................................................................................................................................... 52
Specifications ....................................................................................................................................................... 54
*Unit Controllers are LONMARK certified with an optional LONWORKS communication module.
Original Issue Date: February 2009 Revision Issue Date: May 2013 Replaces: February 2013 Software Version V08.20
©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, granted and used by LONMARK International under a license granted by Echelon Corporation; Modbus from Schneider Electric; MicroTech II, Open Choices from Daikin.
Catalog 602-2 3
Applies to 60 HZ only
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 optimum chiller control system. We invite you to look at how the features and benefits compare to older compressor technologies.

Benefit Summary

Highest Efficiency- in its size range; as low as
0.328 kW/ton.
Increased Reliability This frictionless
magnetic bearing design needs no oil. With no oil to coat the heat transfer surfaces, a gain in heat exchanger efficiency can be realized.
Ultra Quiet A compressor sound level as low
as 76 dBA, with virtually no structure-borne
vibration, eliminates the need for expensive sound attenuation accessories.
Sustainable Performance All oil-lubricated
chillers will deposit oil on heat transfer surfaces and eventually lose some efficiency. Since the Magnitude chiller uses a positive pressure refrigerant and has no oil, its industry-leading efficiency is maintained for the life of the chiller. Additionally, over time negative pressure chillers may draw air and moisture into the system, which can significantly increase energy consumption.
Smart refrigerant choice The compressor is
optimized for HFC 134a, the positive pressure refrigerant with no phase-out schedule and no ozone depletion.
Smart controls. The compressor is self-
correcting and incorporates a system of sophisticated self-diagnostics, monitoring and controls. event of a power failure, the compressor motor acts as a generator, providing power for the bearing control system during coast down. It also has a system to gently de-levitate the shaft.
Safe power interruption In the
4 Catalog 602-2
Oil-Free Design Benefits
Totally Oil-Free Operation = Greater Efficiency
With no oil to coat the heat tr ansfer surfaces, a gain in heat exchanger efficiency can be realized.
No Oil Loss = Sustainable Performance
With no possibility of oil loss at light loads or due to worn seals, the original energy saving efficiency can be maintained for the life of the chiller.
No Oil Handling Equipment = Greater Reliability
With magnetic bearings operating in a magnetic electrical field instead of oil-lubricated bearings, the oil handling equipment is removed. No need for:
oil pumps
oil reservoi rs
oil coolers
oil filters
water r egulating valves
oil relief valves
oil system controls, starter, piping, heaters, etc...
that are needed to maintain oil quality. These devices can be a fault source in tr aditional chillers, and removing them significantly increases unit and system reliability.
No Oil System = Reduced Maintenance Costs
With oil removed from the system, oil samples, oil changes, oil system maintenance, oil f ilter changes and leaks are eliminated.

The Compressor Technology

The advanced, magnetic bearing, permanent magnet synchronous motor technology used in Magnitude chillers offers many owner benefits.
Figure 1, Compressor Cutaway
Magnetic Bearings and
11..
Bearing Sensors
Permanent Magnet
22..
Synchronous Motor
Touchdown Bearings
33..
Shaft and Impellers
44..
Compressor Cooling
55..
VFD
66..
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 variable-speed drive.
The compressor speed reduces as the condensing temperature and/or cooling load reduces, optimizing energy performance through the entire operating range. Movable inlet guide vanes redirect gas flow into the first stage impeller during low loads, after the compressor has reached minimum speed.

Ultra-Smart Controls

The chillers utilize digital control electronics to proactively manage unit operation and providing control of external chilled water and cooling tower pumps.
Greater Reliability

Oil Handling Equipment Removed

With magnetic bearings operating in a magnetic electrical field instead of oil lubricated ball or roller friction type bearings as the basis of design, the oil handling equipment is removed.
Catalog 602-2 5
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.

Low Operating Costs

Shrink Your Utility Costs with Ultra Efficient Part-Load Performance

The Magnitude chiller Integrated Part Load Value (IPLV) is as low as 0.328 kW/Ton. Compare this with most screw compressor chillers - approximately 0.575 kW/Ton. There is a potential for up to 40% energy savings at part load compared to other chillers.

Virtually Eliminate Maintenance Costs

Oi
l samples, oil change-outs, oil system maintenance, oil filter changes are eliminated. The bearing system, shafting and impellers are shown here.

Flexible BAS Interface Modules

Every Magnitude chiller with MicroTech®II controls and the Open Choices™ feature can be provided with L Modbus communications modules for an easy, low cost connection to the building automation system of your choice. Expensive and complex interface gateways are not required.
Modules can also be easily retrofitted after installation.
ONWORKS, BACnet, or

Variable Frequency Drives

Compressor unloading and subsequent chiller capacity reduction is accomplished by a compressor-mounted variable frequency drive. It operates in conjunction with the inlet guide vanes.
The VFDs are a key factor in providing the tremendous energy savings at part load operation.

Seismic Certification Option

WMC units are OSHPD Pre-Approved and so labeled. (California only).
WMC units are certified to IBC 2009
nvironmental Responsibility
E

Long Term Refrigerant Solution

The Magnitude chiller uses R-134a refrigerant, which does not have a phase-out date and does not attack the ozone layer.

Ultra Quiet Sound Levels

The Magnitude chiller is the quietest chiller in the industry for its size range. It is perfect for sound sensitive applications. See ratings on page 17.
The best way to appreciate how quiet these units are is to hear one operate. It is important to compare the sound data in this catalog to other offerings. Remember that a sound pressure difference of only two to three dBA is a very noticeable difference. A number of owners have asked for a large indicating light on the unit so they can tell when it’s on!
6 Catalog 602-2

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.

Unit Control Features

Magnitude Chillers Feature MicroTech

It is only fitting that the world’s most revolutionary chiller design be matched with the advanced Daikin MicroTech control technology to give you the ultimate in chiller performance and control. The control includes many energy-saving features and interface
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 30 years of experience in designing and manufacturing the highly regarded WDC line of
conventional, dual centrifugal compressor chillers.
The operator interface panel is a 15-inch Super VGA touch-screen, utilizing graphics to provide clear and concise information on the chiller status, (see page 9) alarms, trends, and setpoint adjustment. Should the touch-screen become inoperable, the unit controller will continue uninterrupted operation of the chiller.
The controller minds those functions that are common to the chiller as a whole (pumps, cooling
tower, valves, etc.) and is the interface point for BAS connection and other control inputs to the chiller, as well as outputs such as operation of the electronic expansion valve.
The control panel contains a USB port for downloading the unit’s fault history, major parameter trends, and the unit operating manual that is stored in the microprocessor.
Catalog 602-2 7
energy conservation

MicroTech II ® Control Features and Benefits

FEATURE BENEFIT
Easy integration into Building Automation System
(BAS) via the exclusive Open Choice™
communication module
Easy to read, adjustable, 15 inch, Super VGA color
touch screen operator interface
Historic trend data-downloadable
Precise ± 0.2 °F chilled water control
Proactive pre-shutdown correction of “unusual
conditions” allows chiller to stay online
Automatic control of chilled water and condenser
water pumps
Controls up to four stages of tower fans and modulation of tower fan and/or bypass valve
Twenty-five previous alarm descriptions are stored
in memory
Up to four WMC chillers* can be interconnected
for coordinated operation

Designed with the Operator in Mind

Reliable, economic use of any chiller depends largely on an easy operator interface. That’s why operation simplicity was one of the main considerations in the development of the MicroTech controller. The operator’s interface with the chiller is through a 15-inch, Super VGA color monitor with touch-screen capability. The operator can clearly see the entire chiller graphically displayed with the key operating parameters viewable on the screen. Pressing a single on-screen button will access the set screens where setpoints can be reviewed and changed, if necessary. Other screens, such as alarm history, are easily accessed through touch screen buttons. See the following page for some typical screens.
By constantly monitoring chiller status, the MicroTech controller will automatically take proactive measures to relieve abnormal conditions or shut the unit down if a fault occurs. For example, if a problem occurs in the cooling tower and discharge pressure starts to rise, the controller will automatically hold the load point and activate an alarm signal. A further rise in pressure will initiate compressor unloading in an effort to maintain the setpoint pressure and stay online. If the pressure continues to rise, the unit will shut off at the cutout pressure setting.
Designer can select any BAS supplier using standard open protocols and know the MicroTech II control will
interface with it.
Provides stability in chilled water system
Valuable asset for trouble shooting
Simplifies multi-chiller installations
Operators can observe chiller operation and easily
select various data screens and change setpoints
Water temperatures, refrigerant pressures, and motor
load plots can provide valuable information for
Activates alarm and modifies chiller operation to
provide maximum possible cooling
Integrated lead/lag and automatic engagement of
backup pump
Optimum integrated, efficient, control of cooling tower
water based on system conditions
The MicroTech controller's memory retains a record of faults and the time/date stamp. The controller's memory (no batteries required) can retain and display the cause of the current fault and the last twenty-five fault conditions. This method for retaining the fault is extremely useful for trouble shooting and maintaining an accurate record of unit performance and history. The controller features a two-level password security system to provide protection against unauthorized use.
The Home Screen shown in Figure 2 is usually used as the primary viewing screen. It provides real time data on unit status, water temperatures, chilled water set point and motor amp draw. In other words, it very clearly answers the vital question: is the chiller doing what it is supposed to do?
*Note: WMC B-vintage chillers may not be interconnected with any
other model, including WMC A-vintage models. See IM 1029­2 for more information.
8 Catalog 602-2
Figure 2, MicroTech II Home Screen
an alarm occurs, a red button appears on the
If 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 fault can be quickly and easily cleared at this point.

Changing Setpoints

The mystery of changing set points is a thing of the past. Look at how easy the job becomes with the Daikin MicroTech. For example, to change the chilled water set point, press SET from any screen, then press the WATER button and this screen appears, press button #1, Leaving Water Temperature, and you are ready to input a new value. Selected setpoints can also be changed by the BAS.
Fi
gure 3, MicroTech II Setpoints 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

MicroTech Controller Increases Chiller Operating Economy

Many standard features have been incorporated into MicroTech control in order to maintain the operating economy of Daikin centrifugal chillers. In addition to replacing normal relay logic circuits, we’ve enhanced the controller's energy saving capabilities with the following features:
Direct control of water pumps. Optically
isolated, digital output relays provide automatic lead-lag of the evaporator and condenser pumps, permitting pump operation only when r
equired.
User-programmable compressor soft loading.
Prevents excessive power draw during pull down from high unoccupied chilled water temperature conditions.
Chilled-water reset. Accomplished directly on
he unit by resetting the leaving water
t temperature based on the return water temperature. A remote 4-20 ma or 1-5 VDC BAS signal can also be used to reset th
eaving water. Raising the chilled water

Trend Logging

Ever wonder how your chiller performed last week? Were you holding the required chilled water temperature? What kind of cooling load did the chiller have?
Catalog 602-2 9
l setpoint during periods of light loads dramatically reduces electrical consumption.
e
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 performance based upon specific job requirements.
Staging Options (Multiple Chiller
Installations). Lead-lag and load-balance: the MicroTech II controller is capable of compressor lead-lag decisions and balancing compressor loads between two compressors on one unit or two separate Magnitude chillers, using defaults or operator defined staging. For example, in the 30 to 60 percent load segment, one compressor running on each of two chillers will provide better efficiency than two compressors running on one chiller.
Plotting Historic Trends. Past operation of the
chiller can be plotted as trend lines and even downloaded to spread sheets for evaluation - a valuable tool for optimizing efficiency.

Versatile Communications Capabilities Give You Even More Control

For complete flexibility there are four ways to interface with the MicroTech II controller:
1. Direct entry and readout locally at the operator
interface panel on the unit.
2. Direct entry as above plus digital and analog
input/output signals for certain functions such as: enable run input, alarm signal output, 4-20 ma or 0-5 VDC inputs for chilled water reset and load limiting, pump and tower fan control, analog output for variable speed fan and tower bypass.
3. Interface with BACnet, L
ONWORKS, or
Modbus.
4. Direct communication between three
Magnitude WMC chillers (not compatible with WME models).

Building Automation Systems

All MicroTech II controllers are capable of communications providing seamless integration and comprehensive monitoring, control, and two­way data exchange with industry standard protocols Lon Talk

Open Choice Benefits

Easy to integrate into your building automation
system supplier of choice
Factory- or field-installed communications
module
Provides efficient equipment operation
Integrated control logic for factory options
Easy-to-use local user interface
Owner/designer can select the BAS that best
meets building requirements
Comprehensive data exchange
®
or BACnet or Modbus.
10 Catalog 602-2
Capacity Limit Output
R
Cond EWT
R
Evap Water Pump Status
R
Chiller Enable
W
Cond LWT
R
Run Enabled
R
Chiller Local/Remote
R
Cond Refrigerant Pressure
R
Liquid Line Refrigerant Temp
R
Chiller Mode Setpoint
W
Cond Water Pump Status
R
Minimum Send Time
R
Chiller Status
R
Evap Flow Switch Status
R
Cool Setpoint
W
Compressor Percent RLA
R
Evap LWT for Compressor
R
Default Values
W
Compressor Select
W
Evap Refrigerant Pressure
R
Actual Capacity
R
BACnet MS/TP
LonTalk (FTT-10A)
BACnet IP
Modbus RTU
BACnet Ethernet
Figure 5, Sample System Architecture
Table 1, Typical Data Point Availability
Typical Data Points
Capacity Limit Setpoint W Cond Flow Switch Status R Pump Select W
Chiller Limited R Cond Pump Run Hours R Liquid Line Refrigerant Pressure R
Chiller Mode Output R Cond Sat. Refrigerant Temp R Maximum Send Time W
Chiller On/Off R Evap EWT R Network Clear Alarm W
Compressor Discharge Temp R Evap LWT for Unit R Current Alarm R
Compressor Run Hours R Evap Pump Run Hours R Active Setpoint R
Compressor Starts R Evap Sat. Refrigerant Temp R Compressor Suction Line Temp R
Notes: Data points available are dependent upon options selected
1
(W = Write, R = Read)

Network Protocol Options

Catalog 602-2 11

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 most efficient chiller based on the all-important IPLV value. See “IPLV/NPLV Defined” on page 14 for details on the AHRI IPLV efficiency rating.
Starting Inrush: The use of a VFD on centrifugal chillers also provides an excellent method of reducing motor starting inrush-even better than "solid state" starters. Starting current can be closely controlled since both the frequency and voltage are regulated. This can be an important benefit to a building's electrical distribution system. The low inrush feature, combined with two one-half size compressors having a staggered start, is particularly attractive where chillers will be asked to operate on emergency generators. Since inrush has much to do with sizing the generators, much smaller generators can be used.

Optional Harmonic Filter

An optional field-mounted harmonic filter is available. See page 40 for details.

HFC-134a

Daikin Positive Pressure Design:
No
No Vacuum Prevention System
No Contaminants
HFC-134a operates above atmospheric pressure in the entire refrigerant circuit and at normal temperatures. All Daikin centrifugal chillers use a positive pressure refrigerant, with the following benefits:
N
circuit
No breakdown of motor insulation, refrigerant
or lubricant
No increase in operating cost due t
d condensables
Purge
o absorption of impurities into the refrigerant
o
isplacement of heat transfer surface by non-
No crevice corrosion and tube failure due t
m
oisture in the system
No annual service expense to maintain a
rebuild purge unit
No abnormal annual service expense for oil
ilter, and refrigerant replacement
f
No periodic emissions of refrigerant into the
atmosphere
o
nd
,

Heat Exchangers

Daikin Magnitude chillers are equipped with high performance heat exchangers. The unique design greatly increases heat transfer and reduces unit footprint and refrigerant charge. Vessels are designed, constructed and tested in accordance with ASME Section VIII, ASHRAE Standard 15 requirements and TEMA recommendations.
T
he replaceable water tubes are internally rifled and externally enhanced copper, and are mechanically bonded to steel tube sheets. Standard tubes are 0.025-inch wall thickness. Consult factory for other options.
Vessels are available for 1, 2 or 3 pass water flow. A 3/4" or 1-1/2 thick layer of vinyl/nitrate polymer evaporator insulation is optional. All seams are glued to form an effective vapor barrier. Detailed information on the insulation can be found under “Physical Data” on page 27.

Pumpdown

Pumpout systems provide a means to collect and contain the refrigerant charge without loss when access to internal chiller components is required for service.
Daikin condensers and evaporators are sized to hold the entire unit refrigerant charge when not more than 90% full and at 90°F (32°C) ambient temperature. They are equipped with valves in the compressor discharge lines, suction lines, and in the liquid line. These valves, coupled with the vessel design, satisfy the stringent requirements of the U.S. Department of Transportation for refrigerant shipping containers, as well as ASME vessel codes. When service is required, the refrigerant charge can be pumped down into either the condenser or evaporator by compressor operation and use of a refrigerant transfer unit.
12 Catalog 602-2
Elimination of the cost and space requirements of an external pumpout system on most jobs is a major Daikin advantage.

Electronic Expansion Valve

Controlled refrigerant flow over the entire capacity range saves energy and dollars. Cooling loads and condenser water temperatures can change constantly. On Magnitude chillers, a modern electronic expansion valve meters refrigerant flow in direct response to the unit controller input, which looks at unit kW and lift (discharge minus suction pressure) to set the valve position. The controller then balances suction superheat and liquid subcooling to reach the optimum efficienc y, regardless of changing load or condensing temperatures. In doing so, full utilization of compressor, evaporator, and condenser efficiency over the entire operating range is achieved.

Flow Switch

All chiller units must be provided with flow switches for the evaporator and condenser. Daikin furnishes factory-installed and wired, thermal dispersion-type flow switches as standard equipment on Magnitude chillers. This eliminates the expense of field mounting and wiring conventional paddle or differential pressure switches.
e flow switches
Th prevent the unit from starting without sufficient water flow through the vessels. They also serve to shut down the unit in the event that water flow is
interrupted to guard against evaporator freeze-up or excessive discharge pressure.

Optional Witness Test

A factory engineer oversees the testing in the presence of the customer or their designate and translates the test data onto an easy-to-read spreadsheet. Tests are run to AHRI tolerances of capacity and power. 50 Hertz units are tested using an on-site 50 Hertz generator.
Daikin Factory Service Startup
All Daikin centrifugal chillers are commissioned by local Daikin Factory Service personnel or by authorized Daikin startup technicians. This procedure helps assure that proper starting and checkout procedures are employed and helps speed up the commissioning process.

Part Load Efficiency

According to ASHRAE, chillers usually spend 99% of their operating hours under part load conditions and most of this time at less than 60% of design capacity. One compressor of a dual chiller operates with the full heat transfer surface of the entire unit. For example, one 75-ton compressor on a 150-ton dual chiller utilizes 150 tons of evaporator and condenser surface. This results in very high unit efficiency and also increases the compressor’s capacity. The inclusion of VFDs, as standard, to the dual compressor chiller can produce astonishing AHRI Certified IPLVs, selections can vary from this example.
as low as 0.328 kW/ton. Specific

Compliance with ASHRAE Std. 90.1

With the Magnitude chiller capacity range of 145 to 400 tons, they fall into three ASHRAE Std. 90.1 efficiency groups and revisions.
Additionally, for a higher margin of protection, normally open auxiliary contacts in the pump starters can be wired in series with the flow switches as shown in the Field Wiring Diagram.

Optional Certified Test

A factory engineer oversees the testing, certifies the accuracy of the computerized results, and translates the test data onto an easy-to-read spreadsheet. The tests are run to AHRI tolerance of capacity and power. 50 Hertz units are tested using an on-site 50 Hertz generator.
Catalog 602-2 13
Table 2, ASHRAE 90.1 Requirements (kW/ton)
Path A
Path B
Load-
Load-
150 Tons
< 300 Tons
300 Tons
600 Tons
DCBA
IPLVorNPLV
12.0
+
45.0
+
42.0
+
01.0
1
=
DCBAIPLVorNPLV 12.0+45.0+42.0+01.0=
Std. 90.1
Capacity
Range
< 150 Tons 0.703 0.669
≥ <
NOTE: Beginning in 2010, the 90.1 efficiency requirements have been divided into two groups, designated as Path A and Path B. Path B is a new category created for units with VFD compressor drives that by nature have superior part-load efficiencies. WMC
Pre 2010 Starting in 2010
Full
IPLV
Load
0.634 0.596 0.634 0.596 0.639 0.450
0.576 0.549 0.576 0.549 0.600 0.400
Full
IPLV
0.634 0.596
Full
IPLV
0.639 0.450
Magnitude chillers, with their built-in VFDs, fall into
Path B.
The Path B IPLV values for 2010 are about 30 percent less than the 2007 equivalent values. Also beginning in 2010, the minimum efficiency values are formula derived instead tabular so that they can take flows and temperatures other than AHRI standard into account.

AHRI Certification

Daikin has an on-going commitment to supply chillers that perform as specified. To this extent, Daikin centrifugal chillers are part of the AHRI Certification Program. On-going performance verification of chiller capacity and power input plus AHRI certified computerized selection output provide the owner with specified performance in accordance with the latest version of AHRI Standard 550/590.
All c
hillers that fall within the scope of the certification program have an AHRI certification label at no cost to the owner. Equipment covered by the AHRI certification program includes all water-cooled centrifugal and screw water chilling packages rated up to 2500 tons (8800 kW) at AHRI standard rating conditions, hermetic or open drive, with electric driven motor not exceeding 5000 volts, and cooling water (not glycol).
Published certified ratings verified through testing by AHRI include:
and performance tolerances of all units that fall within the application rating conditions.
Leaving chilled water temp.: 40°F to 48°F (44°F standard)
Entering condenser water temp.: 60°F to 95°F
Leaving chilled water temp.: 44°F
Evap. waterside field fouling allowance: 0.0001
Chilled water flow rate: 2.4 gpm/ton
Entering condenser water temp.: 85°F
Condenser waterside field fouling allowance:
0.00025
Condenser water flow rate: 3.0 gpm/ton

IPLV/NPLV Defined

Part load performance can be presented in terms of Integrated Part Load Value (IPLV), which is based on AHRI standard rating conditions (listed above), or Non-Standard Part Load Values (NPLV), which is based on specified or job site conditions. IPLV and NPLV are based on the following weighting equation from AHRI 550/590:
Us
ing kW/ton:
Wher
e:
A = kW/ton at 100% B = kW/ton at 75% C = kW/ton at 50% D = kW/ton at 25%
Or
, using COP values:
Where:
A = COP at 100% B = COP at 75% C = COP at 50% D = COP at 25%
The AHRI Standard 550/590 for Centrifugal or Screw Water-Chilling Packages and associated manuals define certification and testing procedures
14 Catalog 602-2
Capacity, tons (kW)
Power, kW/ton (COP)
Pressure drops, ft. of water (kPa)
Integrated Part Load Value (IPLV) or Non-
Standard Part Load Value (NPLV)
% . ( . % )
%
Tolerance x FL
DTFLx FL
= +
 
 
10 5 0 07
1500

Weighting

The percent of annual hours of operation at the four load points are as follows:
ton (kW/ton), and heat balance is:
100% Load at 1%
75% Load at 42%
50% Load at 45%
25% Load at 12%
Note that the vast majority of hours are at the operating range where dual compressor chillers excel.

Tolerances

The AHRI test tolerance, per AHRI Standard 550/590-98, for capacity (tons), power input per
Where: FL = Full Load DTFL = Chilled Water Delta-T at Full Load This formula results in a ±5% tolerance on tons and kW/ton at the 100% load point and AHRI conditions.
Catalog 602-2 15
MODEL CODE EXAMPLE:
Packaged Water Cooled
M = Magnetic
Centrifugal Compressor Model
Unit Model Code
Motor/Voltage Code
Evaporator Shell Description
Tube Count Code
Tube Type Code
Number of Passes (1, 2, 3)
Water Inlet Location (R = Right Inlet; L = Left Inlet)
Connection Type
Condenser Shell Description [Diameter (in.), Length (ft.)]
Tube Count Code
Tube Type Code
Tube Count Code (Heat Recovery Condenser)
Tube Type Code (Heat Recovery Condenser)
Number of Passes (1, 2, 3)
Wate
r Inlet Location (R = Right Inlet; L = Left Inlet)
Connection Type
Number of Passes (Heat Recovery Condenser)
Water Inlet Location (Heat Recovery Condenser)
Motor Manufacturer
N/A
N/A

Chiller Identification

Magnitude centrifugal chillers are selected by computer and identified by their components on the selection printout as a Model #. The unit model code is as follows:
Figure 6, Chiller Identification
C O M P R E S S
Vintage/Single Refrigerant Circuit
O R
E V
[Diameter (in.), Length (ft.)]
A P O R A T O R
W M C - 150D - BS - 13R / E2212 - B E - 2 RA / C2012 - B L Y Y - 2 R A Y Y Y R 134
C
O
N
D
E
N
S
E
R
Connection Type (Heat Recovery Condenser)
Refrigeration Type (134 = HFC-134a)
16 Catalog 602-2
63 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
75
78.0
Octave Band
63 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
100
37.5
49.5
56.0
65.0
72.0
70.0
66.5
64.0
75.5
75
39.5
48.5
55.0
61.0
69.5
64.5
64.0
60.0
72.5
25
36.0
48.5
54.5
57.5
65.5
60.5
57.5
52.0
68.0
Octave Band
63 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
100
37.5
51.5
59.5
72.0
75.0
72.5
76.5
75.0
81.5
75
37.0
50.5
62.5
66.5
70.0
69.5
74.0
70.5
78.0
50
75.0
25
37.5
49.0
59.0
63.0
65.0
66.0
69.5
64.0
73.5
Octave Band
63 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
100
83.5
25
44.5
51.5
61.0
64.5
67.5
73.0
73.0
62.0
77.0
50

Sound Data

The following sound pressure ratings are for measurements one meter from the unit and in accordance with ANSI/AHRI Standard 575. The ratings are for the various part loads shown and at
lowering of sound level as the units unload. Ratings are “A” weighted measured at one-meter from the unit. The 25 percent values are with one compressor running.
the center bands. Note that there is a considerable
Table 3, WMC 145S Sound Pressure (dB), 50/60 Hz
Percent
Load
100
50 25
37.0 50.0 61.0 67.0 74.5 71.5 73.0 75.5
39.5 49.0 60.5 66.0 72.5 69.0 71.0 72.0
37.0 47.5 60.0 64.5 66.5 68.0 69.5 68.0
38.0 50.0 58.0 66.5 68.5 70.0 69.5 70.0
Octave Band
Table 4, WMC 145D/150D, Sound Pressure (dB), 50/60 Hz
Percent
Load
50
35.5 48.0 54.5 58.0 66.0 61.0 58.5 53.5
Table 5, WMC 250D/290D, Sound Pressure (dB), 50/60 Hz
Percent
Load
A-Weighted
80.5
75.0
76.5
A-Weighted
68.5
A-Weighted
37.5 50.0 60.0 65.0 65.5 66.0 71.5 66.0
Table 6, WMC 400D, Sound Pressure (dB), 50/60 Hz
Percent
Load
46.0 55.5 65.5 70.5 74.5 76.0 80.0 74.5
75 50
45.5 55.5 65.5 69.5 73.5 76.5 79.0 72.5
45.0 54.5 64.0 69.0 71.0 74.5 77.5 70.0

One-Third Octave Band

Table 7, WMC 145S, One-Third Octave Band Sound Ratings
Percent
Load
100
75
25
50 Hz 63 Hz 80 Hz 100 Hz 125 Hz 160 Hz 200 Hz 250 Hz 315 Hz 400 Hz 500 Hz 630 Hz 800 Hz
33.5 32.0 30.5 38.0 46.5 46.5 49.0 59.0 56.0 60.5 63.0 63.0 69.5
34.0 36.0 33.0 39.0 45.0 45.5 49.5 58.5 54.5 58.5 60.0 63.5 71.0
31.5 33.5 31.5 37.5 44.5 43.5 48.0 58.5 54.0 53.0 57.0 63.5 58.0
32.0 32.5 34.5 37.0 47.0 46.5 49.5 55.5 53.0 55.0 59.0 65.0 59.5
Table 7, continued
Percent
Load
1 kHz 1.25 kHz 1.6 kHz 2 kHz 2.5 kHz 3.15 kHz 4 kHz 5 kHz 6.3 kHz 8 kHz 10 kHz 12.5 kHz
100
75
50
25
64.0 72.5 66.0 67.5 66.5 66.5 68.0 69.5 72.0 71.0 69.5 67.5
64.0 65.5 64.5 65.5 63.0 64.0 66.0 68.0 69.5 66.5 64.5 62.0
60.5 64.0 63.5 64.5 61.0 61.5 65.5 65.5 65.5 62.5 60.0 58.5
62.5 66.5 65.0 66.5 64.0 63.5 65.0 66.0 67.0 64.5 62.5 60.0
Octave Band
Octave Band
A-Weighted
82.5
81.0
A- Weighted
80.5
78.0
75.0
76.5
Catalog 602-2 17
Load
Octave Band
50 Hz
63 Hz
80 Hz
100 Hz
125 Hz
160 Hz
200 Hz
250 Hz
315 Hz
400 Hz
500 Hz
630 Hz
800 Hz
100
32.5
32.0
34.0
38.0
48.0
42.0
46.0
53.5
51.0
53.0
62.5
60.5
61.0
75
32.0
32.0
37.5
37.0
47.0
41.0
45.5
52.5
50.0
53.5
58.0
55.5
62.5
50
26.5
30.5
33.0
36.5
47.0
39.0
43.5
52.5
48.5
52.0
53.5
54.5
62.0
25
100
70.5
65.0
68.0
62.0
63.0
62.5
61.0
61.5
60.0
59.0
59.0
58.0
75.5
Load
Octave Band
50 Hz
63 Hz
80 Hz
100 Hz
125 Hz
160 Hz
200 Hz
250 Hz
315 Hz
400 Hz
500 Hz
630 Hz
800 Hz
100
32.0
32.5
33.0
38.0
49.0
47.5
50.5
56.0
56.0
70.0
65.5
65.0
71.0
75
32.0
32.5
32.5
37.5
48.0
46.0
48.5
54.0
61.5
60.5
58.0
64.0
63.0
50
33.0
33.0
32.0
37.0
48.5
43.5
47.5
53.0
58.5
52.5
57.5
64.0
57.5
25
Load
Octave Band
Weighted
1 kHz
1.25 kHz
1.6 kHz
2 kHz
2.5 kHz
3.15 kHz
4 kHz
5 kHz
6.3 kHz
8 kHz
10 kHz
12.5 kHz
100
67.0
71.0
68.0
67.0
68.5
69.5
71.5
73.0
71.0
72.0
67.0
64.5
81.5
75
66.0
65.5
64.5
64.5
64.5
67.5
69.5
70.5
66.5
67.0
63.5
60.5
78.0
50
75.0
25
58.5
62.0
60.5
61.0
62.0
63.5
66.0
64.5
59.5
61.0
55.5
54.4
73.5
Octave Band
75
Octave Band
Table 8, WMC 145D/150D, One-Third Octave Band Sound Ratings
Percent
31.5 30.5 32.0 36.5 47.5 40.5 43.5 52.5 49.5 50.5 52.5 54.5 57.5
Table 8, continued
Percent
Load
1 kHz 1.25 kHz 1.6 kHz 2 kHz 2.5 kHz 3.15 kHz 4 kHz 5 kHz 6.3 kHz 8 kHz 10 kHz 12.5 kHz
Octave Band
A- Weighted
75 50 25
67.5 61.5 59.5 58.5 60.5 59.0 60.0 58.0 55.0 54.0 56.5 57.5
57.5 62.5 57.0 55.5 55.5 54.5 55.5 50.0 48.0 45.5 51.0 50.5
63.5 58.0 56.5 56.0 54.0 53.5 54.0 49.5 48.0 45.0 47.5 48.0
Table 9, WMC 250D/290D, One-Third Octave Band Sound Ratings
Percent
33.0 33.0 31.5 35.5 48.0 42.0 45.5 56.0 56.0 49.5 58.5 61.0 59.0
Table 9, continued
Percent
60.0 63.0 60.5 61.0 62.0 65.0 68.5 66.5 62.0 62.0 59.0 57.5
Table 10, WMC 400D, One-Third Octave Band Sound Ratings
Percent
Load
100
50 25
50 Hz 63 Hz 80 Hz 100 Hz 125 Hz 160 Hz 200 Hz 250 Hz 315 Hz 400 Hz 500 Hz 630 Hz 800 Hz
36.0 42.5 42.5 45.5 52.0 52.0 56.0 60.0 63.5 64.5 65.5 67.0 69.5
35.5 42.5 42.0 45.5 51.5 52.0 55.5 60.0 63.5 64.0 65.0 65.0 70.5
34.0 41.5 42.0 43.5 49.0 52.5 56.0 61.5 58.5 63.5 65.0 64.0 66.0
34.0 41.5 41.0 41.5 45.5 50.0 57.0 55.5 55.5 58.5 59.0 61.0 62.0
72.5
68.5
68.0
A-
Table 11, continued
Percent Load
100
75 50 25
1 kHz 1.25 kHz 1.6 kHz 2 kHz 2.5 kHz 3.15 kHz 4 kHz 5 kHz 6.3 kHz 8 kHz 10 kHz 12.5 kHz
71.0 68.5 70.0 72.0 72.0 72.0 75.0 77.5 71.5 69.5 66.0 63.0
68.0 67.5 69.5 71.0 73.5 72.0 74.5 75.5 69.5 68.0 65.0 61.5
65.5 66.5 68.0 69.0 71.5 70.0 73.0 74.5 67.0 65.0 63.5 57.5
62.0 63.5 65.5 71.5 64.5 66.0 71.0 64.0 59.5 57.0 53.5 49.0
18 Catalog 602-2
A-Weighted
83.5
82.5
81.0
77.0
6.2 157
14.7 375
112.1 2846
101.6 2579
128.3 3259
5.3
TYP.BOTH
ENDS
133
29.3
CONDENSER
RELIEF
VALVES
744
58.3
EVAPORATOR
RELIEFVALVE
1480
134.7
(UNITOVERALL)
3421
18.0 458
11.1 283
17.1 435
FRONT
END
BOX
UNIT
CTRL
BOX
EVAPORATOR
CONDENSER
COMPRESSOR
FRONTVIEW
X
Y
5,7,8
3
3
3
3
114.8 2916
57.5
1460
22.5
EVAPORATOR
RELIEFVALVE
571
22.6
SUCTION
RELIEF
VALVE
574
26.9
CONDENSER
RELIEF
VALVES
684
TOPVIEW
RB
RF
LF
LB
Z
X
4
3
3,4
3,4
5,13
5,13,14
5,7,8
4.0
102
26.5 673
34.5 876
10.0 254
32.7 8
31
37.8 960
44.3
(OVERALLWIDTH)
1126
16.8 425
44.8
1137
65.9
TOP UNIT
CTRL BOX
1675
74.3
TOP FRONT
ENDBOX
1887
81.0
TOP
COMPR.
2058
69.8
SUCTION
RELIEF
VALVE
1774
O.I.T.S.
IN
IN
OUT
OUT
RIGHTVIEW
Y
Z
5
5
5,10,12
5
4
5
5
5.6
INLET
142
5.6
OUTLET
142
8.0
NOM.
TYP.(2X)
203
EVAPORATORHEAD2-PASS
VICTAULIC150 PSI WATERSIDE
C
L
C
L
OUT
IN
7,8
13.0
INLET
330
19.0
OUTLET
483
5.6
OUTLET
143
5.6
INLET
143
6.0
NOM.
TYP.(2X)
152
CONDENSERHEAD2-PASS
VICTAULIC150 PSI WATERSIDE
C
L
C
L
IN
OUT
7,8
13.0
INLET/
OUTLET
330
11.3 287
114.8 2916
34.5 876
1.13
MTG. HOLE
(TYP.)
29
6.3
160
8.9
225
16.0 407
31.9 809
34.0 864
9.0
230
14.0 357
13.8 352
8.0 203
8.0
203
MOUNTING
FOOT(TYP.)
ELECTRICAL
CONNECTIONS
FRONTEND BOX
UNITCTRL BOX
ALLDIMENSIONSAREIN DECMAL
INCHESAND [MILLIMATERS]
SEEDRAWING332835001FORNOTES
RB
LB
LF
RF
5,13,14
5,13
WMC145SBS
332834001 00 NONE
DRAWINGNUMBER REV. SCALE

Dimensions

Figure 7, WMC 145S (B-vintage), 2-Pass, Right-hand (See page 26 for notes.)
Catalog 602-2 19
7.6 194
6.2
157
9.5
241
101.6 2579
112.1 2846
5.3
TYPICAL
BOTH ENDS
133
128.3 3259
29.2
CONDENSER
RELIEF
VALVES
742
58.6
EVAPORATOR
RELIEF
VALVES
1487
134.7
(UNITOVERALL)
3421
17.1 435
11.1 283
UNIT CTRL
BOX
FRONT
END
BOX
CONDENSER
EVAPORATOR
FRONTVIEW
#1 #2
3
3
3
3
5
5,7,8
Y
X
114.8 2916
15.4 391
46.0
1168
22.6
SUCTION
RELIEF
VALVE
574
25.3
EVAPORATOR
RELIEF
VALVE
643
26.3
CONDENSER
RELIEF
VALVES
667
TOPVIEW
4
4
3,4
3,4
5,13,14
5,13
RB
RF
LF
LB
5,7,8
3
X
Z
34.5 876
26.5
673
10.0 254
44.3
(OVERALLWIDTH)
1126
37.8 960
69.8
SUCTION
RELIEF
VALVES
1774
74.3
TOP FRONT
ENDBOX
1887
81.1
TOP
COMPR.
2060
4.0
102
44.8 1137
16.8 425
66.1
TOP UNIT
CTRLBOX
1678
32.7 831
IN
RIGHTVIEW
IN
OUT
5,10,12
5
5
5
5
4
OUT
Y
Z
5.6
OUTLET
143
5.6
INLET
143
6.0
NOM.
TYP.(2X)
152
CONDENSERHEAD 2-PASS
VICTAULIC150PSI WATERSIDE
OUT
IN
7,8
13.0
INLET/
OUTLET
330
5.6
142
5.6
142
8.0
NOM.
TYP.(2X)
203
EVAPORATORHEAD2-PASS VICTAULIC150PSI WATERSIDE
OUT
IN
7,8
13.0
INLET
330
19.0
OUTLET
483
114.8 2916
34.5 876
8.0
203
8.0
203
11.3 287
14.0 357
34.0 864
38.6 981
9.1 232
16.0 407
6.3 160
9.0 230
1.13
MTG.HOLE
(TYP.)
29
13.8 352
FRONTENDBOX
UNITCTRL BOX
MOUNTING
FOOT(TYP.)
ELECTRICAL
CONNECTIONS
ALLDIMENSIONSAREIN DECIMAL
INCHESAND [MILLIMETERS]
SEEDRAWING 332835001 FORNOTES
TOPVIEW
LB
LF
RF
RB
5,13,14
5,13
WMC145DBS
332834101 00 NONE
DRAWINGNUMBER REV. SCALE
Figure 8, WMC 145D (B-vintage), 2-Pass, Right-hand (See page 26 for notes)
20 Catalog 602-2
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