3.6 Checking the Nitrogen Pressure...................................................................................................................................... 45

3.7 Securing an Indoor Unit..................................................................................................................................................... 46

3.8 Securing an Outdoor Unit..................................................................................................................................................47

3.8.1 Securing an Outdoor Unit (on a Concrete Groundwork).................................................................................... 47

3.8.2 Securing an Outdoor Unit (on a Wall)...................................................................................................................... 48

3.8.3 Securing an Outdoor Unit (on a Base)...................................................................................................................... 49

3.9 Connecting Refrigerant Pipes........................................................................................................................................... 50

3.10 Connecting Water Pipes................................................................................................................................................... 55

3.10.1 (Optional) Connecting the Humidifier Water Inlet Pipe................................................................................... 55

3.10.2 Connecting the Condensate Drainpipe.................................................................................................................... 56

3.11 Connecting Cables.............................................................................................................................................................. 57

3.11.1 Cables to be Connected................................................................................................................................................ 57

3.11.2 Connecting the Indoor Unit Power Cable............................................................................................................... 58

3.11.3 (Optional) Connecting the Indoor Unit Signal Cables....................................................................................... 58

3.11.4 Connecting the Outdoor Unit Power Cable and the Signal Cable Between Indoor and Outdoor

Units..................................................................................................................................................................................................59

3.11.5 (Optional) Connect Teamwork and Monitoring Cables.................................................................................... 60

3.11.6 Cable Routes..................................................................................................................................................................... 61

3.12 Leakage Test with Nitrogen............................................................................................................................................ 62

3.13 Vacuumization..................................................................................................................................................................... 63

3.14 Verifying the Installation................................................................................................................................................. 66

4 Power-On Commissioning................................................................................................... 67

4.1 Controller Description......................................................................................................................................................... 67

4.2 Power-On................................................................................................................................................................................. 69

4.3 Setting Temperature and Humidity Values..................................................................................................................73

4.4 (Optional) Setting Teamwork Parameters................................................................................................................... 74

4.5 (Optional) Setting Monitor Parameters........................................................................................................................78

4.6 Commissioning Procedure..................................................................................................................................................79

4.7 Checking After Commissioning........................................................................................................................................ 81

5 System Operation and Maintenance................................................................................ 82

5.1 Routine Maintenance.......................................................................................................................................................... 82

5.1.1 Routine Maintenance Overview................................................................................................................................... 82

5.1.2 Preventive Maintenance Tables.................................................................................................................................... 83

5.2 Troubleshooting..................................................................................................................................................................... 85

5.3 Alarm Reference.................................................................................................................................................................... 89

5.4 Parts Replacement............................................................................................................................................................. 110

5.4.1 Replacing Indoor Unit Components......................................................................................................................... 110

5.4.1.1 Replacing an Air Filter............................................................................................................................................... 110

5.4.1.2 (Optional) Replacing an Electric Heater............................................................................................................. 111

5.4.1.3 (Optional) Replacing a Wet Film Humidifier.....................................................................................................112

5.4.1.4 Replacing an Indoor Fan........................................................................................................................................... 114

5.4.1.5 Replacing a Main Control Board............................................................................................................................ 115

Issue 04 (2022-11-25)

Table of Contents