Daikin WGZ030DW Operating instructions

Operating and Maintenance Manual OMM 1130-2
Group:Chiller
Part Number:OMM1130-2
Date:March 2014
Water-Cooled Scroll Compressor Chillers
WGZ030DW to WGZ200DW, Packaged Water-Cooled Chiller
WGZ030DA to WGZ200DA, Chiller with Remote Condenser
30 to 200 Tons, 105 to 700 kW
R-410a
50-60 Hertz

2OMM 1130-2
Table of Contents
Introduction .......................................3
General Description.............................. 3
Nomenclature........................................ 3
Water Pressure Drop ............................. 3
Components .......................................... 6
Unit Configuration ............................7
Field Wiring Diagrams.......................... 8
Control Panel Layout.......................... 10
Motor Protection Module.................... 10
Start-Up and Shutdown..................11
Sequence of Operation ....................13
Start-up/Compressor Staging.............. 13
MicroTech II Controller..................17
Controller Software Version................ 17
General Description............................ 17
Expansion I/O Controller.................... 20
Setpoints.............................................. 21
Automatic Adjusted Limits................. 23
Dynamic Defaults ............................... 24
Events & Alarms..............................24
Unit Stop Alarms................................. 24
Limit Events........................................ 28
Controller Operation.......................31
EXV Control....................................... 49
Using the Controller........................ 51
Menu Screens...................................... 52
Menu Descriptions.............................. 53
BAS Interface .................................. 72
Parameter Details................................ 73
Compressor Motor protection
Module.............................................. 76
Optional Controls............................ 78
Phase/Voltage Monitor (Optional) ...... 78
Hot Gas Bypass (Optional)................. 78
System Maintenance....................... 79
General................................................ 79
Electrical Terminals ............................ 79
POE Lubrication ................................. 80
Sightglass and Moisture Indicator....... 80
Crankcase Heaters............................... 80
Maintenance Schedule ........................ 81
System Service................................. 82
Troubleshooting Chart ........................ 84
Warranty Statement ....................... 85
Products manufactured in an ISO Certified facility
© 2014Daikin Applied. Illustrations and data cover the Daikin Applied product atthe time ofpublication and wereserve
the right to make changes indesign andconstruction at anytime without notice.
™® The following are trademarks orregistered trademarks oftheir respective companies: BACnet from ASHRAE; LONMARK,
LonTalk, LONWORKS,and the LONMARK logo are managed, granted and used byLONMARK International under a license
granted by Echelon Corporation; Compliant Scroll from Copeland Corporation; Modbus from Schneider Electric;, MicroTech
II, Open Choices from Daikin Applied.
Cover Picture: WGZ130DW without piping insulation installed for clarity

OMM 1130-23
Introduction
General Description
Daikin Type WGZ water chillers are designed for indoor installations Equipment room temperature for
operating and standby conditions is 40°F to 122°F (4.4°C to 50°C).They are available with water-cooled
condensers (Model DW), or arranged for use with remote air-cooled or evaporative condensers (Model
DA). Each water-cooled unit is completely assembled and factory wired before evacuation, charging and
testing. They consist of hermetic scroll compressors, brazed-plate evaporator, water-cooled condenser (WGZ-
DW), and complete refrigerant piping.
Units manufactured for use with remote condensers (Models WGZ-DA) have all refrigerant specialties factory-
mounted and connection points for refrigerant discharge and liquid lines.
Liquid line components that are included are manual liquid line shutoff valves, charging valves, filter-driers,
liquid line solenoid valves, sight glass/moisture indicators, and thermal expansion valves. Other features
include compressor crankcase heaters, and a MicroTech IImicroprocessor controller.
The electrical control center includes all equipment protection and operating controls necessary for dependable
automatic operation.
NOTE: This manual contains information on the chiller unit control software operating with various
refrigerants as follows:
•R-410A, used with the current “D” vintage of the WGZ chiller.
•R-134a, used with only with Model TGZ Templifiers. The operating manual devoted exclusively to
Templifiers is OMM 1136.
BOOT & BIOS
BOOT Version: 3.0F BIOS Version 3.56
Manuals: Information in unit initial installation and routine maintenance is contained in Installation and
Maintenance Manual IM 1131. Nomenclature
W G Z 100 - D W
Water Pressure Drop
Water flow rates should be maintained as closely as possible to job design values. The vessel flow rates must
fall between the minimum and maximum values shown on the appropriate evaporator and condenser curves.
Measure the water pressure drop through the vessels at field-installed pressure taps and check the flow rate
using the following tables. Do not include valves or strainers in these readings.
The evaporator flow rates and pressure drops shown on the following page are for full load design purposes.
The maximum flow rate and pressure drop are based on a 6-degree temperature drop. Avoid higher flow rates
with resulting lower temperature drops to prevent potential control problems resulting from very small control
bands and limited start up/shut off temperature changes.
The minimum flow and pressure drop is based on a full load evaporator temperature drop of 16-degrees.
Water-Cooled
Global Design
Scroll Compressor
Nominal Capacity (Tons)
W = Water-Cooled Cond.
A = Unit Less Cond.
Design Vintage

4WGZ030D 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 kPa
WGZ030D A56.3 2.6 3.5 7.7 90.0 6.3 5.6 18.8 150.0 16.6 9.4 49.7
WGZ035D B64.9 3.6 4.1 10.8 103.8 8.8 6.5 26.3 173.0 23.2 10.8 69.4
WGZ040D C76.3 2.9 4.8 8.6 122.1 7.0 7.6 20.9 203.5 18.5 12.7 55.2
WGZ045D D85.3 3.9 5.3 11.6 136.5 9.5 8.5 28.4 227.5 25.1 14.2 74.9
WGZ050D E96.4 3.0 6.0 9.1 154.2 7.4 9.6 22.1 257.0 19.5 16.1 58.4
WGZ055D F105.8 4.1 6.6 12.1 169.2 9.9 10.6 29.6 282.0 26.1 17.6 78.1
WGZ060D G113.4 5.2 7.1 15.4 181.5 12.6 11.3 37.7 302.5 33.3 18.9 99.4
WGZ070D H131.6 4.3 8.2 12.8 210.6 10.5 13.2 31.4 351.0 27.7 21.9 82.8
WGZ080D I146.8 3.9 9.2 11.6 234.9 9.5 14.7 28.4 391.5 25.1 24.5 74.9
WGZ090D J163.3 3.8 10.2 11.3 261.3 9.2 16.3 27.5 435.5 24.3 27.2 72.6
WGZ100D K183.4 3.8 11.5 11.3 293.4 9.2 18.3 27.5 489.0 24.3 30.6 72.6
WGZ115D L237.6 5.0 14.8 15.1 380.1 12.3 23.8 36.8 633.5 32.5 39.6 97.0
WGZ130D M237.6 6.6 14.8 19.8 380.1 16.2 23.8 48.4 633.5 42.8 39.6 127.8
WGZ150D N277.9 6.5 17.4 19.3 444.6 15.8 27.8 47.2 741.0 41.7 46.3 124.7
WGZ170D O317.4 5.7 19.8 17.1 507.9 14.0 31.7 41.8 846.5 37.0 52.9 110.5
WGZ200D P352.7 7.7 22.0 23.0 564.3 18.8 35.3 56.2 940.5 49.6 58.8 148.3
Inch-Pound
S.I.
Minimum Flow & Pr. Drop
Nominal Flow & Pr. Drop
Maximum Flow & Pr. Drop
Inch-Pound
Inch-Pound
S.I.
S.I.
Curve
Ref
Model
Notes: Minimum, nominal, and maximum flows are at a 16º F, 10º F, and 6º F chilled water temperature range respectively at AHRI tons.

OMM 1130-25
Figure 2, Condenser Pressure Drop, WGZ030D – WGZ200D
Unit Model Ref
#
Min. Flow & PD
Nom. Flow & PD
Max. Flow & PD
IP
SI
IP
SI
IP
SI
GPM
Ft.
L/S
kPa
GPM
Ft.
L/S
kPa
GPM
Ft.
L/S
kPa
WGZ030D
A 56.1 2.4 3.5 7.2 89.7 6.3 5.7 18.8 149.5 17.4 9.4 52.0
WGZ035D
B
64.9
3.4
4.1
10.2
103.8
8.6
6.5
25.7
173.0
23.9
10.9
71.4
WGZ040D
C
76.3
2.7
4.8
8.1
122.1
6.9
7.7
20.6
203.5
19.3
12.8
57.7
WGZ045D
D
85.3
3.6
5.4
10.8
136.5
9.2
8.6
27.5
227.5
25.7
14.4
76.8
WGZ050D
E
96.4
2.9
6.1
8.7
154.2
7.5
9.7
22.4
257.0
20.7
16.2
61.9
WGZ055D
F 105.8 3.8 6.7 11.4 169.2 9.7 10.7 29.0 282.0 26.8 17.8 80.1
WGZ060D
G
113.4
4.5
7.2
13.5
181.5
11.6
11.5
34.7
302.5
32.3
19.1
96.5
WGZ070D
H
132.8
4.1
8.4
12.3
212.4
10.4
13.4
31.1
354.0
29.0
22.3
86.7
WGZ080D
I
146.8
3.7
9.3
11.1
234.9
9.5
14.8
28.4
391.5
26.5
24.7
79.2
WGZ090D
J
165.0
3.4
10.4
10.2
264
8.8
16.7
26.3
440.0
24.5
27.8
73.2
WGZ100D
K 183.4 3.4 11.6 10.2 293.4 8.8 18.5 26.3 489.0 24.4 30.9 72.9
WGZ115D
L
211.7
4.8
13.4
14.3
338.7
12.3
21.4
36.8
564.5
34.1
35.6
101.9
WGZ130D
M
235.1
6.1
14.8
18.2
376.2
15.5
23.7
46.3
627.0
43.1
39.6
128.8
WGZ150D
N
274.9
6.2
17.3
18.5
439.8
15.8
27.7
47.2
733.0
43.8
46.2
130.9
WGZ170D
O
317.4
5.5
20.0
16.4
507.9
14.0
32.0
41.8
846.5
38.9
53.4
116.3
WGZ200D
P 352.7 7.4 22.3 22.1 564.3 18.8 35.6 56.2 940.5 52.3 59.3 156.3
Pressure Drop (ft of water)
Flow Rate (GPM)

6WGZ030D through WGZ200D OMM 1130-2
Components
Figure 3, Compressor Locations
NOTE: Models WGZ150 to WGZ200 add a #5 compressor to circuit #1 and a #6 compressor to
circuit #2.
4 2 3 1
Circuit 2 Circuit 1 Control Panel
Evaporator Evaporator and
Condenser
Connections

OMM 1130-27
Unit Configuration
The chiller units have two refrigerant circuits, Models WGZ 030 to WGZ 130 have two tandem scroll
compressors (total of four), a single two-circuited brazed plate evaporator, a single two-circuited water-
cooled condenser, interconnecting refrigerant piping and a control panel with associated sensors and
transducers.
Models WGZ 150 to WGZ 200 have two refrigerant circuits, two trio scroll compressors (total of six), a
single two-circuited shell-and-tube evaporator, a single two-circuited water-cooled condenser,
interconnecting refrigerant piping and a control panel with associated sensors and transducers.
Figure 4, Schematic Piping Diagram (One of Two Circuits for WGZ030D – 130D)
NOTE: WGZ 150 to WGZ 200 have a shell-and-tube evaporator, three compressors per circuit, and
electronic expansion valves.
Comp
#2
Comp
#1
Condenser Condenser
Water
Evaporator
Chilled
Water
SF-D
T
SS
CV
SP
P
1
LWT
T
T
Legend:
Temperature Sensor
Pressure Transducer
Pressure (High Pressure Cutout)
Temperataure Sensor, Leaving
Chilled Water Control
T
T
T
P
P
1
LWT
Relief Valve
Schrader Fitting
Thermal Expansion Valve
Sight Glass / Moisture Indicator
Charging Valve
T
S
CV
SSolenoid Valve
F-D Filter-Drier
Angle Valve
Ball Valve

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

OMM 1130-29
Figure 6, WGZ030DA – WGZ200DA Field Wiring Diagram (Remote Condenser)

10 WGZ030D through WGZ200D OMM 1130-2
Control Panel Layout
Table 1, Typical Control Panel, 4-Compressor Unit
NOTES:
1. Additional space provided in the upper right section for optional multiple point power connection and
optional circuit breakers.
2. Front door has a slot opening at the top for access to the MicroTech II controller for viewing display
and making keypad entries without opening the panel door.
Motor Protection Module
The motor protection system consists of an external control module, located on each compressor, motor
terminal box, connected to a series of thermistors located in the motor windings and the compressor
discharge port. If the windings experience an over-temperature condition or the discharge temperature is
excessive, the module will trip and shut off the compressor.
Warning
Disconnect the compressor three-phase power before removing the terminal box cover Removal of the
terminal box cover will expose the three-phase power connections. Contact with them can cause serious
injury or death..
!
(3) 120V/24V
Transformers
LineV/120V
Control
Transformer
Control
Transformer
Fuses, Primary
Control
Transformer Fuse,
Secondary
Optional
Disconnect
Switch
Microtech
Controller
(2) Circuit
Mechanical
Hi-Pressure
Switch Relays
(4) Compressor
Circuit Breakers
(4) Compressor
Contactors
Grounding
Lug
Location for
Optional External
Overloads