4.8.3 Connecting Outdoor Unit Pipes................................................................................................................................. 107

4.8.4 (Optional) Welding Pipes for the Low Temperature Component.................................................................. 108

4.8.5 Welding the Water Cooling Module.........................................................................................................................109

4.8.6 Installing Cooling Water pipes for the Water Cooling Module.......................................................................110

4.8.7 (Optional) Connecting the Humidifier Water Inlet Pipe................................................................................... 110

4.8.8 Connecting the Drainpipe............................................................................................................................................ 111

4.9 Leakage Test with Nitrogen............................................................................................................................................ 115

4.10 (Optional) Leakage Test with Water for the Water-Cooled Module............................................................. 120

4.11 Connecting Cables........................................................................................................................................................... 121

4.11.1 Connecting the Equipotential Ground Cable...................................................................................................... 121

4.11.2 Connecting Power Cables.......................................................................................................................................... 122

4.11.3 Connecting Signal Cables.......................................................................................................................................... 129

4.11.3.1 Connecting the Signal Cable Between the Outdoor Unit and Indoor Unit.......................................... 129

4.11.3.2 Connecting Water Sensor Cables.........................................................................................................................131

4.11.3.3 (Optional) Installing a Micro Differential Pressure Sensor.........................................................................133

4.11.3.4 (Optional) Connecting T/H Sensors Outside Cabinets.................................................................................136

4.11.4 (Optional) Installing Teamwork and Monitoring Communications Cables............................................. 138

4.11.4.1 Preparing a Network Cable................................................................................................................................... 138

4.11.4.2 CAN Teamwork + RS485 Monitoring................................................................................................................. 139

4.11.4.3 CAN Teamwork + FE Monitoring......................................................................................................................... 141

4.11.4.4 FE Teamwork + RS485 Monitoring..................................................................................................................... 141

4.11.4.5 FE Teamwork + FE Monitoring............................................................................................................................. 143

4.11.5 (Optional) Installing a Cap (Applicable to Upflow Units)............................................................................. 144

4.12 Lowering a Fan (Applicable to Downflow Units)................................................................................................. 147

5 Verifying the Installation.................................................................................................. 150

5.1 Indoor Unit Installation Verification............................................................................................................................ 150

5.2 Outdoor Unit Installation Verification........................................................................................................................ 152

5.3 Checking the Water Cooling Module.......................................................................................................................... 153

6 Power-On Commissioning................................................................................................. 154

6.1 Vacuumizing and Precharging Refrigerant................................................................................................................ 154

6.1.1 Requirements on the Filling Amount of Refrigerant and Refrigerant Oil................................................... 154

6.1.2 Vacuumizing..................................................................................................................................................................... 157

6.1.3 Precharging Refrigerant................................................................................................................................................ 162

6.2 Preparing for Power-On................................................................................................................................................... 168

6.3 Power-On.............................................................................................................................................................................. 169

6.4 Home Screen........................................................................................................................................................................ 177

6.5 Initial Configuration.......................................................................................................................................................... 179

6.5.1 Setting T/H Sensor Parameters.................................................................................................................................. 179

6.5.2 (Optional) Setting the Pressure Difference Control............................................................................................182

6.5.3 (Optional) Setting Teamwork Parameters............................................................................................................. 182

6.5.4 Setting Communications Parameters....................................................................................................................... 188

6.5.4.1 Setting Access Control Parameters........................................................................................................................ 188

Issue 05 (2020-10-10)

Table of Contents