2.1. Chiller picture ........................................................................................................................................... 14

2.2. Compressor ............................................................................................................................................. 14

2.3. Control ..................................................................................................................................................... 16

2.4. Heat Exchanger ....................................................................................................................................... 17

2.5. Electronic Expansion Valve ..................................................................................................................... 18

3. Operation instructions.......................................................................................................19

3.1. HITACHI condenserless Water Chiller Models: RCUE(40~120)CLG2 .................................................... 20

4. Components of chiller .......................................................................................................21

4.1. Structure drawing .................................................................................................................................... 22

5. Preparation initial check ...................................................................................................23

5.1. Initial check .............................................................................................................................................. 24

5.2. Placing the unit ........................................................................................................................................ 25

5.3. Centre of gravity ...................................................................................................................................... 26

5.4. Service space and foundation ................................................................................................................. 27

5.5. Transportation by rigging ......................................................................................................................... 28

6. Installation ........................................................................................................................29

6.1. Electrical Wiring ....................................................................................................................................... 30

6.2. Water Piping ............................................................................................................................................ 32

6.3. Minimum internal system water volume .................................................................................................. 33

6.4. Water control ........................................................................................................................................... 34

6.5. Refrigerant piping .................................................................................................................................... 34

6.6. BMS connection ...................................................................................................................................... 37

6.7.CSC-5S .................................................................................................................................................... 44

6.8. Installation final check ............................................................................................................................ 45

7. Test running ......................................................................................................................47

7.1. Preparation .............................................................................................................................................. 48

7.2. Test running procedure ............................................................................................................................ 48

7.3. Instructions after test running .................................................................................................................. 48

8. Controller adjustment .......................................................................................................49

8.1. PCB Drawing ........................................................................................................................................... 50

8.2. Control System ........................................................................................................................................ 51

8.3. Controller Adjustment .............................................................................................................................. 51

9. Self-Inspection functions ..................................................................................................55

9.1. Alarm Indication ....................................................................................................................................... 56

9.2. Normal Indication ..................................................................................................................................... 57

9.3. Function for indication of operation condition .......................................................................................... 57

TCGB0051 rev 0 - 09/2009