Daikin WGZ030DW Spécifications

Operating and Maintenance Manual OMM 1130-2 Group: ChillerPart Number: OMM1130-2 Date: March 2014 Water-Cooled Scroll Compressor Chillers WGZ030DW to

10 WGZ030D through WGZ200D OMM 1130-2 Control Panel Layout Table 1, Typical Control Panel, 4-Compressor Unit NOTES: 1. Additional space prov

OMM 1130-2 11 Start-Up and Shutdown Pre Start-up 1. The chilled-water system should be flushed and cleaned. Proper water treatment is required topre

12 WGZ030D through WGZ200D OMM 1130-2 12. Start the system by setting the system switch S1 to on.13. After running the unit for a short time, check

OMM 1130-2 13 11. Check that the MicroTech II controller is set to the desired chilled water temperature.12. Check resets of all equipment protection

14 WGZ030D through WGZ200D OMM 1130-2 41.5°F40.0°F38.5°F½DB½DBEWT50.0°F10.0°F40.0°FEvapDelta-TSetLWTSetStartDeltaT46.5°F36.5°FStop Delta TStart Up T

OMM 1130-2 15 When staging down, one compressor on each circuit will be left on until each circuit has only one compressor running. In other words,

16 WGZ030D through WGZ200D OMM 1130-2 directions and the sequence of operation can be found on page 65. Some means of discharge pressure control mu

OMM 1130-2 17 MicroTech II Controller Controller Software Version This manual is based on software version WGZD20102F. The “02F” is the version desc

18 WGZ030D through WGZ200D OMM 1130-2 Keypad/Display A 4-line by 20-character/line liquid crystal display and 6-key keypad is mounted on the unit co

OMM 1130-2 19 Table 4, Analog Outputs # Description Output Signal Range 1 Cooling Tower Bypass Valve Position 0 to 10 VDC 0 to 100% Open 2 Cooling To

2 OMM 1130-2 Table of Contents Introduction ... 3General Description ... 3 Nomenclatur

20 WGZ030D through WGZ200D OMM 1130-2 Table 6, Continued # Description Type Load Output OFF Output ON 5 Motor Control Relay #3 = Compr#3 C1 Starter

OMM 1130-2 21 Setpoints The following parameters are remembered during power off, are factory set to the Default value, and can be adjusted to any va

22 WGZ030D through WGZ200D OMM 1130-2 Table 7, Continued Description Default Range PW Expansion Valve Type Electronic Thermal, Electronic M Circu

OMM 1130-2 23 Automatic Adjusted Limits The following are set points that will be limited based on the option selected. Evaporator Leaving Water Temp

24 WGZ030D through WGZ200D OMM 1130-2 Dynamic Defaults Some set points will have a particular default value loaded when another setting is changed.

OMM 1130-2 25 When the alarm occurs due to this trigger, it can auto reset the first two times each day, with the third occurrence being manual reset

26 WGZ030D through WGZ200D OMM 1130-2 When the evaporator pressure goes below the Low Evaporator Pressure Unload set point, a timer starts. If this

OMM 1130-2 27 Action Taken: Normal stop all circuits Reset: This alarm can be cleared manually via the keypad, but only if the sensor is back in ran

28 WGZ030D through WGZ200D OMM 1130-2Alarm Log An alarm log stores the last 25 alarms and/or events to occur. When an alarm or event occurs, it is

OMM 1130-2 29 High Condenser Pressure - Unload Event description (as shown on screen): CondPressHighUnloadN Trigger: This event is triggered if all

OMM 1130-2 3 Introduction General Description Daikin Type WGZ water chillers are designed for indoor installations Equipment room temperature for ope

30 WGZ030D through WGZ200D OMM 1130-2 Liquid Line Temperature Sensor Fail (TGZ unit only) Event description (as shown on screen): Low Source Temp Tr

OMM 1130-2 31 Controller Operation Calculations The Control Band defines the temperatures around the Controlling Leaving Water Temperature set point w

32 WGZ030D through WGZ200D OMM 1130-2 The Stage Down temperature is calculated as: Stage Down Temperature = Heat LWT + (Control Band/2) The Heat Sta

OMM 1130-2 33 Parameters used: 1. Heating Leaving Water Temperature set point (Heat LWT)2. Heating Maximum Reset set point (Htg MaxRes)3. LWT Reset s

34 WGZ030D through WGZ200D OMM 1130-2 Heating Mode Return ResetHeat LWT set pointHtg MaxRes set pointHeat LWT (–) Htg MaxResHtg StrtResDT setpoint(r

OMM 1130-2 35 Evaporator Saturated Temperature Evaporator saturated temperature is calculated from the evaporator pressure for each circuit. R410a Ev

36 WGZ030D through WGZ200D OMM 1130-2 Changing the Unit Enable Set Point is accomplished according to the following table. NOTE: An “x” indicates th

OMM 1130-2 37 Power Up Start Delay After powering up the unit, the motor protector modules may not reset for up to 150 seconds. After the control is

38 WGZ030D through WGZ200D OMM 1130-2 OffPumpdown AutoT1T4T3T2Power OnUnit State DiagramEvaporator Water Pump State Control (Evap State) The state-t

OMM 1130-2 39 Primary/Standby Pump Staging The pump designated as primary will start first. If the evaporator state is start for a time greater than

4 WGZ030D through WGZ200D OMM 1130-2 Figure 1, Evaporator Pressure Drop, WGZ030D – WGZ200D GPM Ft L/S kPa GPM Ft L/S kPa GPM Ft L/S kPaWGZ030D A

40 WGZ030D through WGZ200D OMM 1130-2 8-Fan Remote Condenser, R22, R407C Stage Fans Operating on Circuit 1 Fans Operating on Circuit 2 1 Fan 1 Fan 2

OMM 1130-2 41 When stage down occurs or the saturated temperature rises back within the Stage Down dead band the Stage Down Error Accumulator is rese

42 WGZ030D through WGZ200D OMM 1130-2 Auto – The primary pump is the one with the least run hours, the other is used as a backup. #1 Primary – Pump

OMM 1130-2 43 Additional stages can turn on (up to the number specified by the Tower Stages set point) when above conditions are met for the next sta

44 WGZ030D through WGZ200D OMM 1130-2 Valve Stage Mode This mode is only operational when the Valve/VFD Control set point is set to Valve Stage. In

OMM 1130-2 45 Stage Down Now The Stage Down Now flag is set based on the following tests: If Unit Mode = Cool AND LWT error < -0.5 * Control band

46 WGZ030D through WGZ200D OMM 1130-2 compressor will shutdown if the evaporator pressure gets down to 5.0 psi. For R410a, the absolute limit for lo

OMM 1130-2 47 Hold Clear Reset Value = High Pressure Unload set point – [“Initial Offset” + [“Step-Increase” x [“number of occurrence”-1]]] Initial

48 WGZ030D through WGZ200D OMM 1130-2 Network Limit The maximum unit capacity can be limited by a network signal. This function is only enabled if

OMM 1130-2 49 • A normal stage down occurs, and only one compressor on the circuit is running• Unit mode = Ice AND the ice set point is reachedPump D

OMM 1130-2 5 Figure 2, Condenser Pressure Drop, WGZ030D – WGZ200D Unit Model Ref # Min. Flow & PD Nom. Flow & PD Max. Flow & P

50 WGZ030D through WGZ200D OMM 1130-2 Manual EXV Control The EXV position can be set manually. Manual control can only be selected when the circuit

OMM 1130-2 51 Using the Controller Getting Started There are two basic procedures to learn in order to utilize the MicroTech II controller: • Navigat

52 WGZ030D through WGZ200D OMM 1130-2Figure 9, Display in the Shortcut (SCROLL) Mode and Keypad Layout ENTER Key Pressing the ENTER key changes the

OMM 1130-2 53 Figure 10, Menu Matrix “MENU” “VIEW” MENUS UNIT CIRCUITS REFRIGERANT FANS EVENTS VIEW UNIT STATUS (1) VIEW UNIT TEMP (1) VIEW CIRC #1 S

54 WGZ030D through WGZ200D OMM 1130-2 VIEW menu: VIEW < COMPRESSOR< UNIT< EVAPORATOR< FANS/TOWERVIEW UNIT menu: VIEW <

OMM 1130-2 55 This menu gives the status of digital inputs (D.I.), 1=ON, 0=OFF. Numbers are 1 through 18. See Table 5 on page 19 for number referen

56 WGZ030D through WGZ200D OMM 1130-2 VIEW UNIT TEMP (3)Control TempsStart Up XX.X°FStage Up XX.X°FVIEW UNIT TEMP (4)Control TempsStage Down XX

OMM 1130-2 57 VIEW CIRCUIT#2 (3)Comp 4 = OFFHours = XXXXXStarts = XXXXXIf # of Compresors = 6 Only for R410A or R134a VIEW CIRCUIT 1 (4) Comp6=

58 WGZ030D through WGZ200D OMM 1130-2 VIEW REFRG Cir 2 (1)Evap Press XXX.X psiCond Press XXX.X psiR 134a, R22, R410A R407C VIEW REFRG Cir 2 (2) VI

OMM 1130-2 59 Water Cooled = Y Only or TGZ Unit (R134a) VIEW TOWER (2) Bypass Valve = XXX% VFD Speed = XXX% The Bypass Valve value shall be “None

6 WGZ030D through WGZ200D OMM 1130-2 Components Figure 3, Compressor Locations NOTE: Models WGZ150 to WGZ200 add a #5 compressor to circuit #1 and a

60 WGZ030D through WGZ200D OMM 1130-2 Screen Definitions – EVENT LOG EVENT LOG (X)Event DescriptionTime DateScreen Definitions – SET Set Unit Se

OMM 1130-2 61 SET UNIT SPs (4)Start Delta= XX.X°FStop Delta= XX.X°FDemand Limit = ONSee page 13 for an explanation of compressor staging. WGZ Unit

62 WGZ030D through WGZ200D OMM 1130-2 SET UNIT SPs (9) SET UNIT SPs (9)Units = °F/psi Units = °F/psiLang = ENGLISH Lang = ENGLISHRefrig = R410

OMM 1130-2 63 WGZ Unit (R22,R407C,R410A) TGZ Unit (Refrig = 134a) SET UNIT SPs (17) SET UNIT SPs (17)ENTER PASSWORD: XXXX Clg ResType = XActive

64 WGZ030D through WGZ200D OMM 1130-2 # of Compressors = 4 # of Compressors = 6 SET COMP SPs (3)SET COMP SPs (3)Comp 1 = EnableComp 1 = EnableC

OMM 1130-2 65 The last action to take place is the shutoff of all compressors running when the LowEvPrStop setting is reached (default is 58 psi). Re

66 WGZ030D through WGZ200D OMM 1130-2 Set Air-Cooled Condenser Fans Water-cooled = Off SET FANS SPs (1) Fan Stages=X Speedtrol=Yes/No Water-coole

OMM 1130-2 67 Bypass valve position is > the Stage Up @ setpoint (only if Valve/VFD Control setpoint = Valve Stage) Additional stages can turn on

68 WGZ030D through WGZ200D OMM 1130-2 Water-cooled = Y SET TOWER SPs (4) Valve/VFD Control=ValveSP/VFDStage Valve Type=NC to TwrValve/VFD Control s

OMM 1130-2 69 Figure 11, Initial Valve Position Operation After Start When the condenser pump is in the RUN state, the valve output shall be controll

OMM 1130-2 7 Unit Configuration The chiller units have two refrigerant circuits, Models WGZ 030 to WGZ 130 have two tandem scroll compressors (total

70 WGZ030D through WGZ200D OMM 1130-2 TEST The test screens are only available when the unit is in TEST mode. Using these screens, any digital outp

OMM 1130-2 71 SET UNIT SPs (X) <D(data) <C(data) <+(data) <-Additional fields can be edited by pressing the ENTER key

72 WGZ030D through WGZ200D OMM 1130-2 BAS Interface The BAS interface will use the supervisor port on the controller as a connection point. Protocol

OMM 1130-2 73 Table continued Type Index I/O Description LONworks BACnet Modbus I 11 O Active alarms 11 x x x I 12 O Active alarms 12 x x x I

74 WGZ030D through WGZ200D OMM 1130-2 Chiller Mode Applies to Integer 17 and Integer 19. Network Chiller Mode Set Point and Active Chiller Mode use

OMM 1130-2 75 setting is checked. If this is set low, then the defaults for BAS cool set point, network limit, unit enable, and unit mode will be lo

76 WGZ030D through WGZ200D OMM 1130-2 Compressor Motor protection Module The 20, 26, and 30 HP compressors are equipped with an module that provides

OMM 1130-2 77 longer than 6 hours. Once the module has locked out the compressor, a power cycle or Modbus reset command will be required to clear the

78 WGZ030D through WGZ200D OMM 1130-2 Optional Controls Phase/Voltage Monitor (Optional) The phase/voltage monitor is a device that provides protect

OMM 1130-2 79 System Maintenance General To provide smooth operation at peak capacity and to avoid damage to package components, a program of periodi

8 WGZ030D through WGZ200D OMM 1130-2 Field Wiring Diagrams Figure 5, WGZ030DW – WGZ200DW Field Wiring Diagram (Packaged Unit)

80 WGZ030D through WGZ200D OMM 1130-2 POE Lubrication POE type oil is used for compressor lubrication. This type of oil is extremely hygroscopic,

OM 1130-2 81 Maintenance Schedule I. Compressor A. Performance Evaluation (Log & Analysis) * O B. Motor •Meg. WindingsX • Ampere Balance (wit

82 OM 1130-2 System Service DANGER Service on this equipment is to be performed only by qualified refrigeration personnel. Causes for repeated trippi

OM 1130-2 83 Table 8, Thermostatic Expansion Valve Note: Superheat will vary with compressor unloading, but should be approximately as follows: betwe

84 OM 1130-2 Troubleshooting Chart PROBLEM POSSIBLE CAUSES POSSIBLE CORRECTIVE STEPS Compressor Will Not Run 1. Main switch, circuit breakers open.2.

OM 1130-2 85 PROBLEM POSSIBLE CAUSES POSSIBLE CORRECTIVE STEPS Compressor Loses Oil 8. Lack of refrigerant.9. Velocity in risers too low (A-C only).1

© 2014 Daikin Applied • (800) 432-1342 • www.DaikinApplied.com OMM 1130-2 (03/14) Daikin Applied Training and Development Now that you have made

OMM 1130-2 9 Figure 6, WGZ030DA – WGZ200DA Field Wiring Diagram (Remote Condenser)