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WATER COOLED CHILLER AND HEAT PUMPS WITH

INVERTER DRIVEN SCREW COMPRESSOR

MICROTECH™ CONTROLLER

REV

Date

09/20 21

Replace

D-EOMZC00106-17_04 EN

OPERATING MANUAL

D-EOMZC00106-17_05EN

D-EOMZC00106-17_05 - 2/ EN 66

TABLE OF CONTENTS

1 SAFETY CONSIDERATIONS ....................................................................................................................................... 6

1.1 General ................................................................................................................................................................. 6

1.2 Avoid electrocution ................................................................................................................................................ 6

1.3 Safety Devices ...................................................................................................................................................... 6

1.3.1 General safety devices ................................................................................................................................. 6

1.3.2 Circuit safety devices .................................................................................................................................... 6

1.3.3 Component safety devices 6 ...........................................................................................................................

1.4 Available sensors .................................................................................................................................................. 8

1.4.1 Pressure transducers .................................................................................................................................... 8

1.4.2 mperature sensors Te .................................................................................................................................... 8

1.4.3 Thermistors ................................................................................................................................................... 8

1.4.4 Leak detectors .............................................................................................................................................. 8

1.5 Available Controls ................................................................................................................................................. 8

1.5.1 Evaporator pumps ........................................................................................................................................ 8

1.5.2 Condenser pumps (W/C units only) .............................................................................................................. 8

1.5.3 Compressors ................................................................................................................................................ 8

1.5.4 Expansion Valve ........................................................................................................................................... 8

1.5.5 Evaporator Flow Switch ................................................................................................................................ 8

1.5.6 Condenser Flow Switch ................................................................................................................................ 8

1.5.7 Evaporator Three Way Valve (Optional) ....................................................................................................... 9

1.5.8 Double setpoint ............................................................................................................................................. 9

1.5.9 Current limit (optional) 9 ..................................................................................................................................

1.5.10 External Fault 9 ................................................................................................................................................

1.5.11 Rapid Restart (optional) ................................................................................................................................ 9

1.5.12 Remote On-O ............................................................................................................................................. 9

1.5.13 General Alarm 9 ...............................................................................................................................................

1.5.14 Compressor Status ....................................................................................................................................... 9

1.5.15 Circuit Alarm (optional) ................................................................................................................................. 9

1.5.16 Evaporator Pump Start ................................................................................................................................. 9

1.5.17 Condenser Pump Start (W/C units only) ....................................................................................................... 9

1.5.18 Demand limit ................................................................................................................................................. 9

1.5.19 Setpoint override ......................................................................................................................................... 10

2 GENERAL DESCRIPTION .......................................................................................................................................... 11

2.1 Basic Information ................................................................................................................................................ 11

2.2 Abbreviations used .............................................................................................................................................. 11

2.3 Controller Operating Limits .................................................................................................................................. 11

2.4 Controller Architecture ........................................................................................................................................ 11

2.5 Communication Modules ..................................................................................................................................... 12

3 USING THE CONTROLLER ....................................................................................................................................... 13

3.1 General Recommendation .................................................................................................................................. 13

3.2 Navigating ........................................................................................................................................................... 13

3.3 Passwords ........................................................................................................................................................... 14

3.4 Editing ................................................................................................................................................................. 14

3.5 Basic Control System Diagnostic ........................................................................................................................ 15

3.6 Controller maintenance ....................................................................................................................................... 16

3.7 Optional Remote User Interface .......................................................................................................................... 16

3.8 Embedded Web Interface ................................................................................................................................... 17

4 MENU STRUCTURE ................................................................................................................................................... 18

4.1 Main Menu .......................................................................................................................................................... 18

4.2 View/Set Unit ....................................................................................................................................................... 18

4.2.1 Thermostat Ctrl ........................................................................................................................................... 19

D-EOMZC00106-17_05 - 3/ EN 66

4.2.2 Network Ctrl ................................................................................................................................................ 19

4.2.3 Pumps ........................................................................................................................................................ 19

4.2.4 Condenser .................................................................................................................................................. 20

4.2.5 Evaporator .................................................................................................................................................. 20

4.2.6 Rapid Restart .............................................................................................................................................. 20

4.2.7 Date/Time ................................................................................................................................................... 20

4.2.8 Scheduler ................................................................................................................................................... 21

4.2.9 Power Conservation ................................................................................................................................... 21

4.2.10 Controller IP setup ...................................................................................................................................... 22

4.2.11 Daikin on Site .............................................................................................................................................. 22

4.3 View/Set Circuit ................................................................................................................................................... 22

4.3.1 Data ............................................................................................................................................................ 23

4.3.2 Compressor ................................................................................................................................................ 23

4.3.3 EXV ............................................................................................................................................................ 24

4.3.4 Variable VR ................................................................................................................................................. 24

4.4 Active Setpoint .................................................................................................................................................... 24

4.5 Evaporator LWT .................................................................................................................................................. 24

4.6 Condenser LWT .................................................................................................................................................. 24

4.7 Unit Capacity ....................................................................................................................................................... 24

4.8 Unit Mode ............................................................................................................................................................ 25

4.9 Unit Enable (A/C Units only) ................................................................................................................................ 25

4.10 Timers ................................................................................................................................................................. 25

4.11 Alarms ................................................................................................................................................................. 25

4.12 Commission Unit ................................................................................................................................................. 26

4.12.1 Alarm Limits ................................................................................................................................................ 26

4.12.2 Calibrate Sensors ....................................................................................................................................... 26

4.12.2.1 Unit Calibrate Sensors ....................................................................................................................... 26

4.12.2.2 Circuit Calibrate Sensors .................................................................................................................... 27

4.12.3 Manual Control ........................................................................................................................................... 27

4.12.3.1 Unit ..................................................................................................................................................... 27

4.12.3.2 Circuit #1 (Circuit #2 if present) .......................................................................................................... 28

4.12.4 Scheduled Maintenance ............................................................................................................................. 28

4.13 Software Options (Only for MicroTech™ 4)......................................................................................................... 29

4.13.1 Changing the Password for buying new Software Options ......................................................................... 29

4.13.2 Inserting the Password in a Spare Controller .............................................................................................. 30

4.14 Energy Monitoring (Optional for MicroTech™ 4)................................................................................................. 31

4.15 About this Chiller ................................................................................................................................................. 31

5 WORKING WITH THIS UNIT ...................................................................................................................................... 32

5.1 Unit Setup ........................................................................................................................................................... 32

5.1.1 Control Source ............................................................................................................................................ 32

5.1.2 Available Mode Setting ............................................................................................................................... 32

5.1.3 Temperature Settings ................................................................................................................................. 33

5.1.3.1 LWT Setpoint Setting ......................................................................................................................... 33

5.1.3.2 Thermostat Control Settings ............................................................................................................... 33

5.1.4 Alarm Settings ............................................................................................................................................ 34

5.1.4.1 Pumps ................................................................................................................................................ 35

5.1.5 Power Conservation ................................................................................................................................... 35

5.1.5.1 Demand Limit ..................................................................................................................................... 35

5.1.5.2 Current Limit (Optional) ...................................................................................................................... 35

5.1.5.3 Setpoint Reset .................................................................................................................................... 36

5.1.5.4 Setpoint Reset by External 4-20 mA Signal ....................................................................................... 36

5.1.5.5 Setpoint Reset by Evaporator Return Temperature ........................................................................... 36

5.1.5.6 Soft Load ............................................................................................................................................ 37

5.1.6 Date/Time ................................................................................................................................................... 37

5.1.6.1 Date, Time and UTC Settings ............................................................................................................ 37

5.2 Unit/Circuit Start- up............................................................................................................................................. 37