6.1 Filling of Refrigerant ..................................................................................... 14
6.2 Calculating Mass of Additional Refrigerant .................................................. 14
6.3 Inspection Items after Installation ................................................................. 16
6.4 Test-running ................................................................................................... 17
6.4.2 steps for running test ................................................................................. 17
7 Operating Principle of Air-Conditioning Unit ..................................................... 18
7.2 Heat Pump Type Digital Multi-Connected Air-Conditioning Unit ............... 18
7.3 Cooling Only Type Digital Multi Variable Air-Conditioning Unit................ 19
8 Types of Indoor Units to Be Integrated ................................................................ 20
9 Maintenance Measures ......................................................................................... 20
9.1 Inspection at the Beginning of Operational Season ...................................... 21
9.2 Maintenance at the End of the Operational Season ....................................... 21
10 Trouble Shooting ................................................................................................ 22
11 Unit Performance Parameters ............................................................................ 24
11.1 Rated working condition.............................................................................. 24
11.2 The range of production working temperature ............................................ 24
11.3 Performance Parameters of Outdoor Unit ................................................... 25
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