IM 1285-4 • MICROTECH III 2 www.DaikinApplied.com
Introduction..................................3
Warnings and Disclaimers......................3
Hazardous Information Messages ..............3
Approximate Labor Hours ......................3
Labeling Wires ..............................4
Installation...................................6
MicroTech I Display and Board Removal ..........6
Removing Temperature Sensors, Pressure Sensors
and Pressure Switches ........................6
Installing DIN Rails, MicroTech III MCB, Expansion
Modules, Relays, Terminal Blocks, and Wire
Raceways ..................................7
DIN Rails .................................7
MicroTech III and Expansion Modules ...........7
Relays ...................................8
Terminal Blocks ............................8
Wire Raceways ............................9
Installing Remote HMI Display.................9
Installing the T1 Transformer ..................9
Installing PC5, PC7, DHL Tubing and DSP
Transducer ................................9
Installing Freezestat.........................9
Installing Actuators for Waterside Economizer.....9
Installing Water Flow Sensor .................10
Installing the VFD .........................10
Wiring11
Wiring to the MicroTech III.....................11
Wiring the Terminal Blocks and Transformers . . . . 11
Wiring Power to the MicroTech III MCB .........11
Wiring Temperature Sensors . . . . . . . . . . . . . . . . . 12
Wiring Pressure Switches (PC5, PC7 and DHL)
and R63 Relay ............................13
Wiring High Pressure Switches 1/2 and
HP1/HP2 Relays ..........................14
Wiring High Pressure Switches 3/4 and
HP3/HP4 Relays ..........................14
Wiring Low Pressure Switches 1/2,
Frost Protection Switches 1/2, and Resistors ....14
Wiring Low Pressure Switches 3/4
Frost Protection Switches 3/4 ................14
Wire Freezestat ...........................16
Wiring Water Flow Sensor ...................16
Wiring Waterside Economizer and
Water Regulator/Bypass Valves...............16
Wiring the VFD .............................17
Wiring the Duct Static Pressure Sensor.........17
Programming the MicroTech III and VFD........17
Programming the MicroTech III ...............17
Programming the VFD ......................17
Completed Conversion .......................17
Appendix ...................................18
Appendix A ................................18
Appendix B ................................19
Appendix C ................................23
Appendix D ................................32
Appendix E ................................33
Appendix F ................................34
Appendix G ................................39
Appendix H ................................40
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