McQuay WME0400 Installation Manual

Installation and Maintenance Manual IM 1033-3

Group: Chillers

Part Number: 331499601

Date: July 2012

Supersedes: May 2012

MagnitudeMagnetic Bearing Centrifugal Chillers

Model WME

400 to 700 tons (1400 to 2461 kW)

3/60/460-575

R-134a

Note: The unit shown is for the default configuration; your unit may be configured differently. Refer to your selection for configuration.

Contents

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; L

ONMARK, LonTalk, LONWORKS, and the LONMARK logo are

managed, granted and used by L

ONMARK International under a license granted by Echelon Corporation; Modbus from Schneider

Electric; MicroTech E, Open Choices from McQuay International; LEED from the U.S. Green Building Council.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

System Water Volume . . . . . . . . . . . . . . . . . . . 5

Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Chiller Identification. . . . . . . . . . . . . . . . . . . . . . . . 11

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical Notes . . . . . . . . . . . . . . . . . . . . . . . 14

Field Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . 15

Dimension Drawings . . . . . . . . . . . . . . . . . . . . . . . 16

Safety labels used in this manual:

Cautions indicate potentially hazardous situations, which can result in personal injury or equipment damage if not avoided.

Warnings indicate potentially hazardous situations, which can result in property damage, severe personal injury, or death if not avoided.

Dangers indicate a hazardous situation which will result in death or serious injury if not avoided.

Standard Head Connection Dimensions . . . . 27

Marine Water Box Dimensions . . . . . . . . . . . 28

Optional External Harmonic Filter Dimensions 29

Physical Data & Weights. . . . . . . . . . . . . . . . . . . . 31

Lifting and Mounting Weights . . . . . . . . . . . . 31

Physical Data - Evaporator . . . . . . . . . . . . . . 32

Physical Data - Condenser . . . . . . . . . . . . . . 32

Refrigeration Diagram . . . . . . . . . . . . . . . . . . . . . . 33

Optional External Harmonic Filter . . . . . . . . . . . . 34

Optional External Harmonic Filter . . . . . . . . . 34

Startup, Operation, and Storage . . . . . . . . . . . . . 37

Long Term Storage . . . . . . . . . . . . . . . . . . . . 39

CAUTION

WARNING

DANGER

Introduction

Lifting Points

Lifting P oint

Lifting Point (Outside Corner Hidden)

VFD Power Panel

Power Cable Entry

Note: This drawing is for general reference only. Refer to dimension drawings for actual location of components.

W M E 0500

Water-cooled

Magnetic Bearing

Vintage

Chiller Model

Introduction

Figure 1: Required Lifting Arrangement

General Description

Daikin McQuay Magnitude model WME frictionless centrifugal chillers are complete, self-contained, automatically controlled fluid chilling units. Each unit is completely assembled and factory tested before shipment. Model WME is cooling-only.

Each Magnitude Model WME unit features one compressor connected to a condenser and evaporator. The chillers use refrigerant R-134a to reduce the size and weight of the package compared to negative pressure refrigerants and since R-134a operates at a positive pressure over the entire operation range, no purge system is required. The controls are pre-wired, adjusted and tested. Only normal field connections such as piping, electrical and interlocks, etc. are required, thereby simplifying installation and increasing reliability. Most necessary equipment protections and operating controls are factory-installed in the control panel.

The chillers are designed for indoor, non-freezing locations. If indoor freezing temperatures are possible, special procedures

Figure 2: Nomenclature

described in this manual must be followed to drain the unit. Outdoor locations require a special weatherproof design. For WME chillers selected with optional Retrofit Knockdown, refer to IM Knockdown, available on www.daikinmcquay.com for detailed dimensions and installation instructions.

Application

The procedures presented in this manual apply to standard Model WME chillers. Refer to the Operating Manual, OMM 1034 for detailed information about chiller operation and the MicroTech-E unit controller.

All Daikin McQuay centrifugal chillers are factory tested prior to shipment and must be initially started at the job site by a factory trained McQuay service technician. Failure to follow this startup procedure can affect the equipment warranty.

The standard limited warranty on this equipment covers parts that prove defective in material or workmanship. Specific details of this warranty can be found in the warranty statement furnished with the equipment.

4 IM 1033-3

Installation

Receiving and Handling

The unit should be inspected immediately after receipt for possible damage.

All Daikin McQuay centrifugal water chillers are shipped FOB factory and all claims for handling and shipping damage are the responsibility of the consignee.

Insulation corners from the evaporator's rigging hole locations are shipped loose and should be glued in place after the unit is finally placed. Neoprene vibration pads are also shipped loose. Check that these items have been delivered with the unit.

If so equipped, leave the shipping skid in place until the unit is in its final position. This will aid in handling the equipment.

Extreme care must be used when rigging the equipment to prevent damage to the control panels or refrigerant piping. See the certified dimension drawings included in the job submittal for the center of gravity of the unit. Consult the local Daikin McQuay sales office for assistance if the drawings are not available.

The unit can be lifted by fastening the rigging hooks to the four outside corners of the unit where the rigging eyes are located. Lengthwise and crossway spreader bars must be used between the rigging lines to prevent damage to the control panels, piping and especially the large Variable Frequency Drive (VFD) power panel located at one end of the unit. See

Figure 1, page 4.

outside edge of the feet. Most Model WME units have six mounting feet although only the outer four are required. Six pads are shipped and the installer can place pads under the middle feet if desired.

Mounting

Make sure that the floor or structural support is adequate to support the full operating weight of the unit.

It is usually not necessary to bolt the unit to the mounting slab or framework; but should this be desirable, 1 1/8" (28.5 mm) mounting holes are provided in the unit support at the four

corners.

CAUTION

Note: Units are shipped with refrigerant valves closed to isolate the refrigerant for shipment. Valves must remain closed until start-up by the McQuay technician.

Nameplates

There are several identification nameplates on the chiller:

"The unit nameplate is located on the side of the VFD panel. This plate also lists the unit refrigerant charge, electrical data and the unit model number and serial number, which should be used when communicating with McQuay International.

"Vessel nameplates are located on the evaporator and condenser. Along with other information, they have a National Board Number (NB) and serial number, either of which identifies the vessel (but not the entire unit).

Location and Mounting

The unit must be mounted on a level concrete or steel base and must be located to provide service clearance at one end of the unit for possible removal of evaporator tubes and/or condenser tubes. The length of the vessel should be allowed at one end for this purpose. Doors or removable wall sections can be utilized for tube clearance. Evaporator and condenser tubes are rolled into the tube sheets to permit replacement if necessary. Minimum clearance at all other points, including the top, is 3 feet (1 meter) unless greater clearance is required by other codes or job conditions. The National Electric Code (NEC) can require four feet or more clearance in and around electrical components and must be checked.

Location

The WME chillers are intended only for installation in an indoor or weather protected area consistent with the NEMA 1 rating on the chiller, controls, and electrical panels. Equipment room temperature for operating and standby conditions is 40°F to 122°F (4.4°C to 50°C).

Vibration Pads

The shipped-loose neoprene vibration pads should be located under the corners of the unit (unless the job specifications state otherwise). They are installed to be flush with the sides and

"A compressor nameplate is located on the compressor itself and contains identification numbers.

System Water Volume

All chilled water systems need adequate time to recognize a load change, respond to that load change and stabilize, without undesirable short cycling of the compressors or loss of control. In air conditioning systems, the potential for short cycling usually exists when the building load falls below the minimum chiller plant capacity or on close-coupled systems with very small water volumes.

Some of the things the designer should consider when looking at water volume are the minimum cooling load, the minimum chiller plant capacity during the low load period and the desired cycle time for the compressors.

Assuming that there are no sudden load changes and that the chiller plant has reasonable turndown, a rule of thumb of "gallons of water volume equal to two to three times the chilled water gpm flow rate" is often used.

A properly designed storage tank should be added if the system components do not provide sufficient water volume. Note: Water volumes can be found in the Physical Data tables on page 27.

IM 1033-3 5

Installation

0 102030405060708090100

ECWT (°F)

Percent Load

46°F LChW T

44°F LChW T

42°F LChW T

Bypass,MildWeatherOperation

Condenser Water Temperature

Figure 3: MODEL WME Minimum Entering Condenser Water Temperature (EXV) (10 F Range at Full Load)

When the ambient wet bulb temperature is lower than design, the entering condenser water temperature of Magnitude model WME chillers can be lowered to improve chiller performance.

Chillers can start with entering condenser water temperatures as low as 40°F (4.4°C). For short periods of time during startup, the entering condenser water temperature can even be lower than the leaving chilled water temperature.

Magnitude model WME chillers are equipped with electronic expansion valves (EXV) and will run with entering condenser water temperatures as low as shown in Figure 2 or as calculated from the following equation on which the curves are based:

MECWT = 5.25+(LWT)-0.75*DTFL*(PLD/100)+14 *(PLD/100)2

Figure 4 illustrates two temperature-actuated tower bypass

arrangements. The "Cold Weather" scheme provides better startup under cold ambient air temperature conditions. The bypass valve and piping are indoors and thus warmer, allowing for warmer water to be immediately available to the condenser. The check valve may be required to prevent air at the pump inlet.

Figure 4: Possible Bypass Arrangements

Where:

MECWT = Min entering condenser water temperature

LWT = Leaving chilled water temperature

DTFL = Chilled Water Delta-T at full load

PLD = The percent chiller load point to be checked

For example; at 44°F LWT, 10°F Delta-T at full load, and 50% full load operation, the entering condenser water temperature could be as low as 49°F. This provides excellent operation with water-side economizer systems.

Depending on local climatic conditions, using the lowest possible entering condenser water temperature may be more costly in total system power consumed than the expected savings in chiller power would suggest, due to the excessive fan power required.

In this scenario, cooling tower fans would continue to operate at 100% capacity at low wet bulb temperatures. The trade-off between better chiller efficiency and fan power should be analyzed for best overall system efficiency. McQuay's Energy Analyzer program can optimize the chiller/tower operation for specific buildings in specific locales.

Even with tower fan control, some form of water flow control, such as tower bypass, is recommended.

6 IM 1033-3

Condenser water temperature control

The standard MicroTech controller is capable of three stages of tower fan control plus an analog control of either a three-way tower-bypass valve or variable speed tower-fan motor. Stages are controlled from condenser-water temperature. The threeway 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.

Pumps

The condenser water pump(s) must be cycled off when the last compressor of the system cycles off. This will keep cold condenser water from migrating refrigerant to the condenser. Cold liquid refrigerant in the condenser can make start-up difficult. In addition, turning off the condenser water pump(s) when the chillers are not operating will conserve energy.

Include thermometers and pressure gauges at the chiller inlet and outlet connections and install air vents at the high points of piping. Where noise and vibration are critical and the unit is

Installation

mounted on spring isolators, flexible piping and conduit connections are necessary.

Variable Fluid Flow Rates and Tube Velocities

Many chiller system control and energy optimization strategies require significant changes in evaporator and condenser water flow rates. The Magnitude model WME chiller line is particularly well suited to take full advantage of these energy saving opportunities provided that the maximum and minimum fluid flow rates are taken into consideration for a specific application. The sales engineer has the flexibility to use different combinations of shell size, number of tubes, and pass arrangements to select the optimum chiller for each specific application.

Both excessively high and excessively low fluid flow rates should be avoided. Excessively high fluid flow rates and correspondingly high tube velocities will result in high fluid pressure drops, high pumping power, and potentially tube corrosion and or tube corrosion damage. Excessively low fluid flow rates and correspondingly low velocities should also be avoided as they will result in poor heat transfer, high compressor power, sedimentation and tube fouling. Excessively high and low tube velocities can be particularly problematic and damaging in open loop systems.

Rates of Fluid Flow Change

If it is decided to vary the evaporator water flow rate the rate of change should not exceed 50% per minute and should not exceed the minimum or maximum velocity limits as determined by the Daikin McQuay chiller software program.

Vibration Mounting

The Magnitude model WME chillers are almost vibration-free. Consequently, floor mounted spring isolators are not usually required. Rubber mounting pads are shipped with each unit. It is wise to continue to use piping flexible connectors to reduce sound transmitted into the pipe and to allow for expansion and contraction.

A properly designed storage tank should be added if the system components do not provide sufficient water volume.

System Analysis

The McQuay Energy Analyzer program is an excellent tool to investigate the entire system efficiency, quickly and accurately. It is especially good at comparing different system types and operating parameters. Contact your local Daikin McQuay sales office for assistance on your particular application.

Water Piping

Vessel Drains at Start-up

Unit vessels are drained of water in the factory and are shipped with the drain plugs in the heads removed and stored in the control panel or with open ball valves in the drain hole. Be sure to replace plugs or close the valves prior to filling the vessel with fluid.

Evaporator and Condenser Water Piping

All evaporators and condensers come standard with ANSI/ AWWA C-606 grooved nozzles (also suitable for welding), or optional flange connections. The installing contractor must provide matching mechanical connections or transitions of the

size and type required.

CAUTION

If welding is to be performed on the mechanical or flange connections, remove temperature sensors and thermal dispersion flow switch from the nozzles to prevent damage to those components. Also properly ground the unit or severe damage to the MicroTech E unit controller can occur.

Water pressure gauge connection taps and gauges must be provided in the field piping at the inlet and outlet connections of both vessels for measuring the water pressure drops. The pressure drops and flow rates for the various evaporators and condensers are job specific and the original job documentation can be consulted for this information.

System Water Volume

Some of the things the designer should consider when looking

Be sure that water inlet and outlet connections match certified drawings and stenciled nozzle markings. The condenser is connected with the coolest water entering at the bottom to

maximize subcooling.

CAUTION

When common piping is used for both heating and cooling modes, care must be taken to provide that water flowing through the evaporator cannot exceed 110°F which can cause the relief valve to discharge refrigerant or damage controls.

at water volume are the minimum cooling load, the minimum chiller plant capacity during the low load period and the desired cycle time for the compressors.

The piping must be supported to eliminate weight and strain on the fittings and connections. Piping must also be adequately insulated. If a pump strainer is not close to a vessel, a

Assuming that there are no sudden load changes and that the chiller plant has reasonable turndown, a rule of thumb of

cleanable 20-mesh water strainer must be installed in the water inlet line. Sufficient shutoff valves must be installed to permit

"gallons of water volume equal to two to three times the chilled water gpm flow rate" is often used.

IM 1033-3 7

Installation

FactoryMountedFlowSwitch

Paddle‐typeFlowSwitch

draining the water from the evaporator or condenser without draining the complete system.

CAUTION

Freeze Notice: Neither the evaporator nor the condenser is self-draining; Both must be blown out to help avoid damage from freezing.

The piping should also include thermometers at the inlet and outlet connections and air vents at the high points.

The water heads can be interchanged (end for end) so that the water connections can be made at either end of the unit. If this is done, new head gaskets must be used and control sensors relocated.

In cases where the water pump noise can be objectionable, vibration isolation sections are recommended at both the inlet and outlet of the pump. In most cases, it will not be necessary to provide vibration eliminator sections in the condenser inlet and outlet water lines. But they can be required where noise and vibration are critical.

Mechanical Clamped Couplings

Use the following steps when installing clamped couplings:

1.Check for smooth pipe between the pipe end and the groove. Remove any indentations, projections, or weld seams. Failure to do this can result in a leaking joint.

bleed-off is operating. Atmospheric air contains many contaminants, which increases the need for water treatment.

CAUTION

The use of untreated water will result in corrosion, erosion, slime buildup, scaling, or algae formation. Water treatment service must be used. McQuay International is not responsible for damage or faulty operation from untreated or improperly treated water.

Special care must be taken when utilizing open system water that is usually not treated (such as lakes, rivers, and ponds). Special tube and water head material may be required to reduce damage from corrosion.

Flow Switches

Factory-mounted thermal dispersion flow switches are provided as standard..

An additional paddle-type flow switch can be installed in the vessel outlet piping as an added precaution to signal the presence of adequate water flow to the vessels before the unit can start. 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. They are not necessary for unit operation.

Figure 5: Flow Switch Options

2.Apply a thin coat of Victaulic or silicon lubricant to the gasket lips and exterior.

3.Position the gasket over the pipe end without overhanging the pipe.

4.Join the pipes together and slide the gasket into position, centering it between the groves.

5.Install the housing halves over the gasket, making sure that the housing' keys engage the groves on both pipes.

6.Install the bolts and thread the nuts on hand tight. Make sure that the oval heads of the bolts seat properly in the bolt holes.

7.Tighten the nuts evenly by alternating sides until metal to metal contact is made on the housing bolt pads. Make sure that the housing keys completely engage the pipe grooves.

Tower Filtering and Treatment

Owners and operators must be aware that if the unit is operating with a cooling tower, cleaning and flushing the cooling tower is required. Make sure tower blow-down or

If field-mounted flow switches (normally paddle-type) are being used, electrical connections in the Unit Control Panel must be made per the field wiring diagram on page 14. The

8 IM 1033-3

Installation

normally open contacts of the flow switch must be wired between the terminals. Flow switch contact quality must be

separate conduit from any high voltage conductors (115 VAC and higher).

suitable for 24 VAC, low current (16ma). Wire switches in

Pipe Size (NOTE)

Min.

Adjst.

Max.

Adjst.

Note 1: A segmented 3-inch paddle (1, 2, and 3 inches) is furnished mounted, plus a 6-inch paddle loose. Note 2: Flow rates for a 2-inch paddle trimmed to fit the pipe. Note 3: Flow rates for a 3-inch paddle trimmed to fit the pipe. Note 4: Flow rates for a 3-inch paddle. Note 5: Flow rates for a 6-inch paddle Note 6: There is no data for pipe sizes above 8-inch. A switch minimum setting should provide protection against no flow and close well before design flow is

Flow

No Flow

Flow

No Flow

reached.

Freeze Notice: Neither the evaporator nor the condenser is self-draining; Both must be blown out to help avoid damage from freezing.

inch 1 1/4 1 1/2 2 2 1/2 3 4 5 6 8

mm 32 (2) 38 (2) 51 63 (3) 76 102 (4) 127 (4) 153 (4) 204 (5) gpm Lpm gpm Lpm

gpm

Lpm gpm Lpm

5.8 7.5 13.7 18.0 27.5 65.0 125.0 190.0 205.0

1.3 1.7 3.1 4.1 6.2 14.8 28.4 43.2 46.6

3.7 5.0 9.5 12.5 19.0 50.0 101.0 158.0 170.0

0.8 1.1 2.2 2.8 4.3 11.4 22.9 35.9 38.6

13.3 19.2 29.0 34.5 53.0 128.0 245.0 375.0 415.0

3.0 4.4 6.6 7.8 12.0 29.1 55.6 85.2 94.3

12.5 18.0 27.0 32.0 50.0 122.0 235.0 360.0 400.0

2.8 4.1 6.1 7.3 11.4 27.7 53.4 81.8 90.8

CAUTION

Field Insulation Guide

Factory insulation is an available option (0.75" or 1.5"). If field insulated, the following components should be insulated to prevent condensation on Magnitude model WME chillers.

The piping should also include thermometers at the inlet and outlet connections and air vents at the high points.

The water heads can be interchanged (end for end) so that the water connections can be made at either end of the unit. If this is done, new head gaskets must be used and control sensors relocated.

System Pumps

Operation of the chilled water pump can be to:

1 Cycle the pump with the unit enable

2 Operate continuously

3 Start automatically by a remote source

The cooling tower pump must cycle with the compressor. The holding coil of the cooling tower pump motor starter must be rated at 115 volts, 60 Hz, with a maximum volt-amperage rating of 100. A control relay is required if the voltageamperage rating is exceeded. See the Field Wiring Diagram or in the cover of control panel for proper connections.

Table 1: Insulation Guide

Evaporator Motor Cooling

Stator cooling Evaporator Tube

Notes:

1 The discharge line can also be insulated for sound reduction, as an option. 2 The compressor body does not require insulation.

3 Insulation quantity: E3612=129 sq.ft. (12 m

Evaporator Water

Suction Elbow

), E3012=115 sq ft. (11 m2).

Expansion valve VFD cooling

Relief Valves

Figure 6: Typical Vent Piping

All interlock contacts must be rated for no less than 10 inductive amps. The alarm circuit provided in the control center utilizes 115-volts AC. The alarm used must not draw more than 10 volt amperes.

IM 1033-3 9

Installation

Common

DD D



 



 



....

As a safety precaution and to meet code requirements, each chiller is equipped with pressure relief valves located on the condenser and evaporator vessels for the purpose of relieving excessive refrigerant pressure (caused by equipment malfunction, fire, etc.) to the atmosphere. Most codes require that relief valves be vented to the outside of a building, and this is a desirable practice for all installations. Relief piping connections to the relief valves must have flexible connectors.

Whenever vent piping is installed, the lines must be run in accordance with local code requirements; where local codes do not apply, the latest issue of ANSI/ASHRAE Standard 15 code recommendations must be followed.

Condensers have two relief valves as a set with a three-way valve separating the two valves (large condensers will have two such sets). One valve remains active at all times and the

second valve acts as a standby. Note: Remove plastic shipping plugs (if installed) from the inside of the valves prior to making pipe connections.

Table 2: Relief Valve Data

Model Relief Valve Location Pressure Setting Discharge Cap. Conn. Size No. of Valves

WME

Figure 7: Condenser 3-Way Valve

Evaporator Top of Evaporator 200 psi 75.5 lb air/min 1 in. FPT 1 Condenser Top of Condenser 200 psi 75.5 lb air/min 1 in. FPT 2



Refrigerant Vent Piping

Twin relief valves mounted on a transfer valve are used on the condenser so that one relief valve can be shut off and removed, leaving the other in operation. Only one of the two is in operation at any time.

Vent piping is sized for only one valve of the set since only one can be in operation at a time. In no case would a combination of evaporator and condenser sizes require more refrigerant than the pumpdown capacity of the condenser. Condenser pumpdown capacities are based on the current ANSI/ ASHRAE Standard 15 that recommends 90% full at 90°F (32°C). To convert values to the older AHRI standard, multiply pumpdown capacity by 0.888.

Sizing Vent Piping (ASHRAE Method)

Relief valve pipe sizing is based on the discharge capacity for the given evaporator or condenser and the length of piping to be run. Discharge capacity for R-134a vessels is calculated using a complicated equation that accounts for equivalent length of pipe, valve capacity, Moody friction factor, pipe ID, outlet pressure and back pressure. The formula, and tables derived from it, are contained in ASHRAE Standard 15-2001.

Using the ASHRAE formula and basing calculations on the 225 psi design yields a conservative pipe size, which is summarized in Tabl e 3. The table gives the pipe size required

per relief valve. When valves are piped together, the common

piping must follow the rules set out in the following paragraph

on common piping.

Table 3: Relief Valve Piping Sizes

Equivalent

length (ft)

Pipe Size inch

(NPT)

Moody Factor 0.0209 0.0202 0.0190 0.0182 0.0173 0.0163

2.2 18.5 105.8 296.7 973.6 4117.4

1 1/4 1 1/2 2 2 1/2 3 4

NOTE: A 1-inch pipe is too small for the flow from the valves.

A pipe increaser must always be installed at the valve outlet.

Common Relief Valve Piping

According to ASHRAE Standard 15, the pipe size cannot be

less than the relief valve outlet size. The discharge from more

than one relief valve can be run into a common header, the

area of which cannot be less than the sum of the areas of the

connected pipes. For further details, refer to ASHRAE

Standard 15. The common header can be calculated by the

formula:

The above information is a guide only. Consult local codes

and/or latest version of ASHRAE Standard 15 for sizing data.

10 IM 1033-3

Chiller Identification

ater-Cooled C

Unit Size

Single Circuit Motor Code

 M2 – Standard  M3 –

Low THD (WME0500)

Voltage Code, 3/60/480



A – 3/60/ 440V



R – 3/ 60/460V



S – 3/60/480V

Sound Package

Evap: Size, dia (in)

-length (ft)

Evap Tubes: B=Count, E=Type

Evap Heads: 2=Pass, R=Right, A=Conn, Type

Evap Design Press: Ref=200 psi Waterside: C4=150 psi C5 =300 psi

Leaving Water Temp (x 10)

NOT USED

Cond: Size, dia (in) length (ft)

Cond. Tubes: Type and Count

Heads: 2=Pass, R=Right, A=Conn, Type

Evap Tube Sheet and Head Material

Refrigerant

Compressor Revision

WME 0500S S M2 S S AAB E3612 BE 2RA C4 440 CC Y A C3012 BYLL 2RA C4 1050 CC Y A A 134

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Passes: 1, 2, 3 Handednesss: R-Right; L-Left Connection: A-Victaulic; B- Flanged; C/E-Marine Waterbox

Evaporator Revision

Passes: 1, 2, 3 Handednesss: R-Right; L-Left Connection: A-Victaulic; B- Flanged; C/E-Marine Waterbox

Cond Design Press: Ref=200 psi

Waterside: C4=150 psi C5 =300 psi Max. Leaving Water Temp F (x 10) Cond. Tube Sheet and Head Material NOT USED

Compressor Revision

ASME Pressure Vessel Code

 M4 –

Low THD (WME0700)

t#$%wFWBQPSBUPSUVCFT t&'(wFWBQPSBUPSUVCFT t+,..JYFEFWBQPSBUPSUVCFT

If code begins with:

t-/1wFWBQPSBUPSUVCFT t"#$wFWBQPSBUPSUVCFT

If code begins with:

Figure 8: Magnitude Code String Chiller Identification

Chiller Identification

IM 1033-3 11

hiller

Chiller Identification

080 E1 YY EAYYY MBYYYYYY YYYY YY B 1 4 B Y Y 5 1 B A 0500 U Y H Y Y Y Y 2 B

26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

Refrigerant Weight

Expansion Valve

NOT USED

Controls: MicroTech-E

BAS Card: MB = Modbus; LY = LONworks; BM= Bacnet

NOT USED

Shell and Head Insulation: H_ = 3/4” Insulation 3_ = 1.5” Insulation YY = None

Flow Switch (standard)

Standard Finish

Crating: 4=Shipping Bag/Wood Skid (std.)

Refrigerant: A - Full Charge B/N - Holding Charge

Special

Future

Knockdown: Y-None 1-Type I 2- Type II 3- Type III

Standard/Certied/Witness Test Option

ARI/ETL/CETL Listing

Unit Revision

Chiller Startup (Std on Domestic)

Extended Warranty

Refrigeration Tons

Standard 1st Year Warranty

Future

Refrigerant Warranty

Delayed Start Warranty

Figure 9: Magnitude Code String Chiller Identification

12 IM 1033-3

Electrical Data

Wiring, fuse and wire size must be in accordance with the National Electric Code (NEC).

Important: Voltage unbalance not to exceed 2% with a resultant current unbalance of 6 to 10 times the voltage unbalance per NEMA MG-1, 1998 Standard. This is an important restriction that must be adhered to.

Power Wiring

Power entrance is on top of the enclosure. Remove cover plate when making hole to avoid entrance of foreign material into the enclosure.

Power connection lug size is 3/0 AWG - 500kcmil, three conductors per phase

The ground connection is a stand-off adjacent to the circuit breaker, marked "MGND". Field provide a 3/8-16 x ¾ in. screw with a flat washer and lock washer and appropriate "O"

terminal.

CAUTION

Qualified and licensed electricians must perform wiring. Shock hazard exists.

Electrical Data

CAUTION

Connections to terminals must be made with copper lugs and copper wire..

Use only copper supply wires with ampacity based on 75°C conductor rating. (Exception: for equipment rated over 2000 volts, 90°C or 105°C rated conductors should be used).

The VFD nameplate will indicate the RLA setting required in the MicroTech-E controller. The RLA setting is for the VFD output amps not the input amps. Follow name plate values for output RLA.

Power Factor Correction Capacitors

Do not use power factor correction capacitors with WME chillers. They can cause harmful electrical resonance in the system. Correction capacitors are not necessary since VFDs inherently maintain high power factors.

Control Wiring

The control circuit power on Magnitude model WME chillers is supplied by the unit-mounted VFD.

Figure 10: Unit Control Panel

IM 1033-3 13

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