Mitsubishi Electric ECOV-X37VA Manuel D'installation page 4

Contents
9. Refrigerant charging................................................................................................37
9-1. Refrigerant charging procedure ...................................................................................... 37
9-2. Allowable amount of refrigerant to be charged ............................................................... 38
9-3. Insulating ........................................................................................................................ 39
10. Electrical wiring........................................................................................................40
10-1. Notes on wiring ............................................................................................................... 40
10-2. Wire capacity .................................................................................................................. 41
10-3. Electrical characteristics ................................................................................................. 42
10-4. Connecting wires ............................................................................................................ 43
10-5. Output signal to external devices.................................................................................... 44
10-6. How to use MODBUS
10-6-1. Precautions for using MODBUS
10-6-2. RS485 communication specifications ............................................................. 46
10-6-3. MODBUS
10-7. Electric circuit diagram.................................................................................................... 48
10-7-1. Electric circuit diagram .................................................................................... 48
11. Test run .....................................................................................................................49
11-1. To ensure proper test run ............................................................................................... 49
11-2. Setting the pressure switch <high pressure>.................................................................. 49
11-3. Setting the target evaporation temperature .................................................................... 50
11-4. Test run procedure ......................................................................................................... 51
11-4-1. Initial processing ............................................................................................. 51
11-4-2. Operation ........................................................................................................ 51
11-4-3. Stop the unit. (Pump down stop)..................................................................... 51
11-4-4. Display of the MAIN board (inside the control box)......................................... 52
11-5. Checking the unit condition............................................................................................. 52
11-5-1. Regular operation check ................................................................................. 52
11-5-2. Preventing short-cycling operation.................................................................. 53
11-5-3. Troubleshooting .............................................................................................. 53
12. Post-installation inspection ....................................................................................54
12-1. Installation check list ....................................................................................................... 54
12-2. Check items for refrigerant circuit components............................................................... 55
13. Providing guidance on the usage to the end users ..............................................56
13-1. Maintenance ................................................................................................................... 56
13-2. Preventing continuous liquid refrigerant flood-back ........................................................ 56
13-3. Regular operation check ................................................................................................. 56
13-4. Cleaning the gas cooler fins ........................................................................................... 56
13-5. Cleaning the panels ........................................................................................................ 56
13-6. Handling of the gas cooler (all-aluminum heat exchanger)............................................. 56
14. Specifications...........................................................................................................57
WT09614X03_GB
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wiring procedure........................................................................... 46
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