Daikin EWYT021CZI-A1, Руководство по установке и обслуживанию

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D-EIMHP01505-22_00EN 29/59
5. ELECTRICAL INSTALLATION
5.1. General specifications
Refer to the specific wiring diagram for the unit you have bought. Should the wiring diagram not be on the unit, or should
it have been lost, please contact your manufacturer representative, who will send you a copy.
In case of discrepancy between wiring diagram and electrical panel/cables, please contact the manufacturer
representative.
▪ Be sure to keep the power line and transmission line apart from each other. Transmission wiring
and power supply wiring may cross but may not run parallel.
▪ Transmission wiring and power supply wiring may not touch internal piping in order to avoid wire
damage due to high temperature piping.
▪ Firmly close the lid and arrange the electrical wires to prevent the lid or other parts from coming
loose.
▪ Be sure to follow the limits below. If the unit-to-unit cables are beyond these limits, it may result in malfunction of
transmission:
▪ Maximum wiring length: 30 m.
▪ Total wiring length: 30 m.
For the wiring above, always use vinyl cords with 0.75 to 1.25 mm
2
sheath or cables (2-core wires). (3-core wire cables
are allowable for the cooler/heater changeover user interface only.)
Electrical equipment is capable of operating correctly in the intended ambient air temperature. For very hot/cold
environments (refer to 4.13,
“Operation limits”), additional measures are recommended (contact the manufacturer
representative).
The electrical equipment is capable of operating correctly when the relative humidity does not exceed 50% at a maximum
temperature of +40 °C. Higher relative humidity are permitted at lower temperatures (for example 90% at 20 °C).
5.2. Electric connections
Provide an electrical circuit to connect the unit. It must be connected to the copper cables with an adequate section relative
to the absorption values and according to the current electrical standards.
Daikin Applied Europe S.p.A. declines all responsibility for an inadequate electrical connection.
The connections to the terminals must be made with copper terminals and cables, otherwise
overheating or corrosion may occur at the connection points with the risk of damaging the unit. The
electrical connection must be carried out by qualified personnel, in compliance with the laws in force.
There is a risk of electric shock.
The power supply to the unit must be set up in such a way that it can be switched on or off independently from that of other
system components and other equipment in general, by means of a general switch.
The electrical connection of the panel must be carried out maintaining the correct sequence of the phases. Refer to the
specific wiring diagram for the unit you have bought. In case of discrepancy between the wiring diagram and electrical
panel/cables, please contact the manufacturer representative.
Do not apply torque, tension or weight to the main switch terminals. Power line cables must be
supported by appropriate systems
.
To avoid interference, all control wires must be connected separately from the power cables. To do this, use several
electrical passage ducts.
The protections for the power supply system must be designed according to the values mentioned above. A fuse must be
present on each phase and, where provided for by the national laws of the country of installation, a leak detector to earth.
Before any electrical connection work to the compressor motor and / or the fans, make sure that the
system is switched off and the main switch of the unit is open.
Failure to observe this rule could result in serious personal injury.
5.3. Cable requirements
The cables connected to the circuit breaker must respect the insulation distance in the air and the surface isolation distance
between the active conductors and the earth, according to IEC 614391 table 1 and 2, and to the local national laws. The
cables connected to the main switch must be tightened using a pair of keys and respecting the unified clamping values,
relative to the quality of the screws of the washers and nuts used.
Connect the earth conductor (yellow / green) to the PE ground terminal.
The equipotential protection conductor (earth conductor) must have a section according to table 1 of EN 602041 Point 5.2,
shown below.