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Pagina 1/67

WATER COOLED CHILLER AND HEAT PUMPS WITH

INVERTER DRIVEN SCREW COMPRESSOR

MICROTECH™ CONTROLLER

REV

Date

01/2024

Replace

D-EOMZC00106-17_06EN

OPERATING MANUAL

D-EOMZC00106-17_07EN

D-EOMZC00106-17_07EN - 2/67 
TABLE OF CONTENTS 
SAFETY CONSIDERATIONS ....................................................................................................................................... 6 
1  General ................................................................................................................................................................. 6 
2  Avoid electrocution ................................................................................................................................................ 6 
3  Safety Devices ...................................................................................................................................................... 6 
3.1  General safety devices ................................................................................................................................. 6 
3.2  Circuit safety devices .................................................................................................................................... 6 
3.3  Component safety devices ........................................................................................................................... 6 
4  Available sensors .................................................................................................................................................. 8 
4.1  Pressure transducers .................................................................................................................................... 8 
4.2  Temperature sensors .................................................................................................................................... 8 
4.3  Thermistors ................................................................................................................................................... 8 
4.4  Leak detectors .............................................................................................................................................. 8 
5  Available Controls ................................................................................................................................................. 8 
5.1  Evaporator pumps ........................................................................................................................................ 8 
5.2  Condenser pumps (W/C units only) .............................................................................................................. 8 
5.3  Compressors ................................................................................................................................................ 8 
5.4  Expansion Valve ........................................................................................................................................... 8 
5.5  Evaporator Flow Switch ................................................................................................................................ 8 
5.6  Condenser Flow Switch ................................................................................................................................ 8 
5.7  Evaporator Three Way Valve (Optional) ....................................................................................................... 9 
5.8  Double setpoint ............................................................................................................................................. 9 
5.9  Current limit (optional) .................................................................................................................................. 9 
5.10  External Fault................................................................................................................................................ 9 
5.11  Rapid Restart (optional) ................................................................................................................................ 9 
5.12  Remote On-Off ............................................................................................................................................. 9 
5.13  General Alarm............................................................................................................................................... 9 
5.14  Compressor Status ....................................................................................................................................... 9 
5.15  Circuit Alarm (optional) ................................................................................................................................. 9 
5.16  Evaporator Pump Start ................................................................................................................................. 9 
5.17  Condenser Pump Start (W/C units only) ....................................................................................................... 9 
5.18  Demand limit ................................................................................................................................................. 9 
5.19  Setpoint override ......................................................................................................................................... 10 
GENERAL DESCRIPTION .......................................................................................................................................... 11 
1  Basic Information ................................................................................................................................................ 11 
2  Abbreviations used .............................................................................................................................................. 11 
3  Controller Operating Limits.................................................................................................................................. 11 
4  Controller Architecture ........................................................................................................................................ 11 
5  Communication Modules ..................................................................................................................................... 12 
USING THE CONTROLLER ....................................................................................................................................... 13 
1  General Recommendation .................................................................................................................................. 13 
2  Navigating ........................................................................................................................................................... 13 
3  Passwords........................................................................................................................................................... 14 
4  Editing ................................................................................................................................................................. 14 
5  Basic Control System Diagnostic ........................................................................................................................ 15 
6  Controller maintenance ....................................................................................................................................... 16 
7  Optional Remote User Interface .......................................................................................................................... 16 
8  Embedded Web Interface ................................................................................................................................... 17 
MENU STRUCTURE ................................................................................................................................................... 18 
1  Main Menu .......................................................................................................................................................... 18 
2  View/Set Unit ....................................................................................................................................................... 18 
2.1  Thermostat Ctrl ........................................................................................................................................... 19 