Trane CCEB, Installation Operation & Maintenance

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7 Electrical connection ................................................................................................................................................ 59
7.1 Connecting to an external protective conductor system ...................................................................................... 59
7.2 AC motors ........................................................................................................................................................... 59
7.3 Repair switch (emergency stop switch) ............................................................................................................... 64
7.4 Variable, frequency-controlled drives (VFD, frequency converters) .................................................................... 65
7.5 Electric heaters ................................................................................................................................................... 66
7.5.1 AHUs equipped from TRANE with control ETAMATIC................................................................................ 66
7.5.2 AHUs which are not equipped from TRANE with control (which have to be equipped with controls on
responsibility of the client) ........................................................................................................................................... 66
7.6 Differential pressure restriction for plate heat exchangers .................................................................................. 68
7.7 Lighting ............................................................................................................................................................... 70
8 Commissioning ......................................................................................................................................................... 70
8.1 Preliminary steps ................................................................................................................................................ 70
8.1.1 Variable frequency controlled drives - parameters ...................................................................................... 71
8.1.2 Airflow measurement by differential pressure measurement at the fan nozzle ........................................... 73
8.1.3 Heat exchanger ........................................................................................................................................... 75
8.1.4 Electric heater ............................................................................................................................................. 76
8.1.5 Filters .......................................................................................................................................................... 76
8.1.6 Humidifier / Air washer ................................................................................................................................ 77
8.2 Refrigeration circuit ............................................................................................................................................. 78
8.2.1 General notes ............................................................................................................................................. 78
8.2.2 Manually starting the compressor via TRANE control system ..................................................................... 78
8.2.3 Refrigerant .................................................................................................................................................. 79
8.2.4 Compressor lubricant .................................................................................................................................. 79
8.3 Test run ............................................................................................................................................................... 79
9 Maintenance .............................................................................................................................................................. 82
9.1 Control cabinet .................................................................................................................................................... 82
9.2 Fan / motor group ............................................................................................................................................... 82
9.2.1 Fan .............................................................................................................................................................. 82
9.2.2 Motor ........................................................................................................................................................... 84
9.2.3 V-belt drive .................................................................................................................................................. 84
9.2.4 Re-tensioning of belts ................................................................................................................................. 86
9.2.5 Replacing of belts ....................................................................................................................................... 88
9.3 Air filters .............................................................................................................................................................. 88
9.3.1 Panel filters ................................................................................................................................................. 89
9.3.2 Bag filters .................................................................................................................................................... 90
9.3.3 HEPA filters ................................................................................................................................................. 90
9.3.4 Auto roll filters ............................................................................................................................................. 91
9.4 Heat exchangers ................................................................................................................................................. 91
9.4.1 Medium water / steam ................................................................................................................................. 91
9.4.2 Refrigerant .................................................................................................................................................. 92
9.4.3 Electric Heater ............................................................................................................................................ 92
9.5 Humidifier, Air washers ....................................................................................................................................... 92
9.5.1 Pump........................................................................................................................................................... 92
9.5.2 Air washers ................................................................................................................................................. 93
9.5.3 Steam humidifiers ....................................................................................................................................... 93
9.5.4 Honey comb humidifiers.............................................................................................................................. 93
9.5.5 Spray tube humidifiers ................................................................................................................................ 94
9.6 Dampers ............................................................................................................................................................. 94
9.7 Sound attenuators ............................................................................................................................................... 94
9.8 Weather louver.................................................................................................................................................... 94
9.9 Energy recovery systems .................................................................................................................................... 94
9.9.1 Plate heat exchangers ................................................................................................................................ 94
9.9.2 Heat wheels ................................................................................................................................................ 95
9.9.3 Heat pipes ................................................................................................................................................... 95
9.9.4 Accublocs .................................................................................................................................................... 95
9.10 Refrigeration circuit .......................................................................................................................................... 96
9.10.1 Leakage checks .......................................................................................................................................... 96
9.10.2 Maintenance ............................................................................................................................................... 97
9.10.3 Inspection .................................................................................................................................................... 98
9.11 Hygienic units .................................................................................................................................................. 99
9.12 Maintenance plan ............................................................................................................................................ 99
10 Information on airborne noise emitted by the air conditioning units - on request ........................................... 101
11 ATEX units .............................................................................................................................................................. 101
11.1 General notes ................................................................................................................................................ 101
11.2 Information regarding the unit, protective systems and components ............................................................. 103
11.3 Information for commissioning, maintenance and repair ............................................................................... 104
11.3.1 Foundation and erection ........................................................................................................................... 104