Daikin EWADC19T-XLB3 Bedienungsanleitung

Daikin PC Kühlventilator EWADC19T-XLB3

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Installation, Operation and Maintenance Manual

Air cooled chiller with screw compressor

MICROTECH CONTROLLER

Original Instructions

Rev.

Date

04/2021

Supersedes

D–EOMAC00A04-14_01EN

CONTROL PANEL OPERATING MANUAL

D–EOMAC00A04-14_02EN

D–EOMAC00A04-14_02EN - 2/62 
Contents 
Introduction .................................................................................................................................................................... 5 
Controller Features........................................................................................................................................................ 6 
General Description....................................................................................................................................................... 7 
1  General Description ................................................................................................................................................... 7 
2  Control Panel Layout ................................................................................................................................................. 7 
3  Hardware Structure .................................................................................................................................................... 7 
4  System Architecture ................................................................................................................................................... 8 
4.1  Control network details ......................................................................................................................................... 9 
Sequence of Operation ............................................................................................................................................... 10 
Controller Operation.................................................................................................................................................... 13 
1  MicroTech Inputs/Outputs ........................................................................................................................................ 13 
1.1  Analog Inputs ..................................................................................................................................................... 13 
1.2  Analog Outputs................................................................................................................................................... 13 
1.3  Digital Inputs....................................................................................................................................................... 13 
1.4  Digital Outputs .................................................................................................................................................... 13 
2  Extension I/O Compressor #1 to #3 ......................................................................................................................... 14 
2.1  Analog Inputs ..................................................................................................................................................... 14 
2.2  Analog Outputs................................................................................................................................................... 14 
2.3  Digital Inputs....................................................................................................................................................... 14 
2.4  Digital Outputs .................................................................................................................................................... 14 
3  I/O EXV Circuit #1 to #3 ........................................................................................................................................... 14 
3.1  Analog Inputs ..................................................................................................................................................... 14 
3.2  Analog Outputs................................................................................................................................................... 14 
3.3  Digital Inputs....................................................................................................................................................... 14 
3.4  Digital Outputs .................................................................................................................................................... 14 
4  Extension I/O Fan Module Circuit #1 & 2................................................................................................................. 15 
4.1  Digital Inputs....................................................................................................................................................... 15 
4.2  Digital Outputs .................................................................................................................................................... 15 
5  Extension I/O Fan Module Circuit #3 ....................................................................................................................... 15 
5.1  Digital Outputs .................................................................................................................................................... 15 
6  Extension I/O Unit Alarm & Limiting ......................................................................................................................... 15 
6.1  Analog Inputs ..................................................................................................................................................... 15 
6.2  Analog Outputs................................................................................................................................................... 15 
6.3  Digital Inputs....................................................................................................................................................... 15 
6.4  Digital Outputs .................................................................................................................................................... 15 
7  Setpoints .................................................................................................................................................................. 16 
7.1  Auto Adjusted Ranges ....................................................................................................................................... 19 
7.2  Dynamic Default Values ..................................................................................................................................... 19 
Unit Functions.............................................................................................................................................................. 20 
1  Calculations.............................................................................................................................................................. 20 
1.1  LWT Slope.......................................................................................................................................................... 20 
1.2  Pulldown Rate .................................................................................................................................................... 20 
2  Unit Type .................................................................................................................................................................. 20 
3  Unit Enable............................................................................................................................................................... 20 
4  Unit Mode Selection ................................................................................................................................................. 20 
4.1  Glycol Configuration ........................................................................................................................................... 21 
5  Unit Control States ................................................................................................................................................... 21 
6  Unit Status................................................................................................................................................................ 22 
7  Ice Mode Start Delay ............................................................................................................................................... 22 
8  Evaporator Pump Control ........................................................................................................................................ 22 
8.1  Pump Selection .................................................................................................................................................. 22 
8.2  Primary/Standby Pump Staging ......................................................................................................................... 23 
8.3  Auto Control ....................................................................................................................................................... 23 
9  Noise Reduction ....................................................................................................................................................... 23 
10  Leaving Water Temperature (LWT) Reset............................................................................................................... 23 
10.1 LWT Target ........................................................................................................................................................ 23 
10.2 Leaving Water Temperature (LWT) Reset ......................................................................................................... 23 
10.3 4-20 mA External Signal Reset .......................................................................................................................... 24 
10.4 Outside Air Temperature (OAT) Reset............................................................................................................... 24 
11  Unit Capacity Control ............................................................................................................................................... 25 
11.1 Compressor Staging in Cool Mode .................................................................................................................... 25 
11.2 Compressor Staging in Ice Mode ....................................................................................................................... 25 
11.3 Staging Sequence .............................................................................................................................................. 25 
11.4 Compressor Capacity Control In Cool Mode ..................................................................................................... 26 
11.5 Load/Unload Sequence ...................................................................................................................................... 26 
11.6 Compressor Capacity Control In Ice Mode ........................................................................................................ 26 
12  Unit Capacity Overrides ........................................................................................................................................... 26 