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All units are delivered from factory as complete sets which include wiring diagrams and dimensional drawings with
size, weight and features of each model.
In case of any discrepancy between this manual and the two aforesaid documents, please refer to the wiring diagram
and dimensional drawings.
Power Wiring
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When the machine is off but the disconnecting switch is in the closed position, unused circuits are always live.
Never open the terminal board box of the compressors unless the main switch of the machine has been switched off.
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Before starting the installation of the unit, please read this manual carefully. Starting up the unit is absolutely
forbidden if all instructions contained in this manual are not clear.
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Commissioning of the unit (first start up) must be performed by Daikin representative
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It is absolutely forbidden to remove all the protections of the moving parts of the unit
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If the unit mounts suction and discharge valves they need to be secured in open position when the unit is installed,
by means of a lead seal or equivalent. This to avoid they are put in closed position. The use of this valve is
intended for compressor maintenance.
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If refrigerant charge of the unit is more than 500 kg it is necessary to install gas sensor on water circuit to catch
an eventual gas leakage.
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Verify that the unit has not zero pressure in the refrigerant circuit before charging water into the heat exchangers.
In case there is not pressure in the refrigerant circuit, do not charge water.
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Do not use oxygen or a mixture of R-22 and air to build up pressure as explosion can occur causing serious
personal injury.
Warnings for the operator
The operator must read this manual before using the unit.
The operator must be trained and instructed on how to use the unit.
The operator must strictly follow local safety regulation and laws.
Qualified and licensed electricians must perform wiring. Shock hazard exists.
Connections to terminals must be made with copper lugs and copper wire.
Before any installation and connection work, the system must be switched off and secured. After
switching off the unit, when an inverter is installed, the intermediate circuit capacitors of the inverter
are still charged with high voltage for 5 minutes.
Before taking any action, switch off the main switch to cut off electricity to the machine.
The units of the series can be provided with non-linear high power electrical components (inverters)
which introduce higher harmonics, can cause considerable leakage to earth, (higher than 300 mA). The
electricity supply system protection must take the above values into account.
CAUTION
WARNING
D–EIMWC00808-16HU - 4/64
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