Vrv Plus; Power Circuit And Cable Requirements - Daikin VRV System Installation Manual

2 Field Wiring
2-4

VRV plus

2-4-1 General instructions
2
• All field wiring and components must be installed and maintenanced by a licensed electrician and must comply with relevant local and national
regulations.
• The field wiring must be carried out in accordance with the wiring diagrams and instructions given below.
• Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.
• Use copper conductors only.
• When using the adaptor for sequential start, refer to chapter "Examples".
• For connection wiring to outdoor-outdoor transmission F1-F2, outdoor-indoor transmission F1-F2, refer to chapter "Examples".
• For connection wiring to the central remote controller, refer to the installation manual of the central remote controller.
• Use insulated wire for the power cord.

Power circuit and cable requirements

A power circuit (See table below) must be provided for connection of the unit. This circuit must be protected with the required safety devices, i.e. a main
switch, a slow blow fuse on each phase and an earth leak detector.
RSXYP16
RSXYP18
RSXYP20
RSXYP24
RSXYP26
RSXYP28
RSXYP30
When using residual current operated circuit breakers, be sure to use a high-speed type 200mA rated residual operating current.
• Select the power supply cable in accordance with relevant local and national regulations.
• Make sure to connect the power source wire to the power source terminal block and to clamp it as shown in figure 19, chapter "Field line
connection".
• As this unit is equipped with an inverter, installing a phase advancing capacitor not only will deteriorate power factor improvement effect, but also
may cause capacitor abnormal heating accident due to high-frequency waves. Therefore, never install a phase advancing capacitor.
• Keep power imbalance within 2% of the supply rating.
1. Large imbalance will shorten the life of the smoothing capacitor.
2. As a protective measure, the product will stop operating and an error indication will be made, when power imbalance exceeds 4% of the supply
rating.
• Follow the "electrical wiring diagram" when carrying out any electrical wiring.
• Only proceed with wiring work after blocking off all power.
• Always ground wires. (In accordance with national regulations of the pertinent country.)
• Do not connect the ground wire to gas pipes, sewage pipes, lightning rods, or telephone ground wires.
• Gas pipes can explode or catch fire if there is a gas leak.
• Sewage pipes: no grounding effect is possible if hard plastic piping is used.
• Telephone ground wires and lightning rods: dangerous when struck by lightning due to abnormal rise in electrical potential in the grounding.
• This unit uses and inverter, and therefore generates noise which will have to be reduced to avoid interfering with other devices. The outer casing
of the product may take on an electrical charge due to leaked electrical current, which will have to be discharged with the grounding.
• Be sure to install an earth leak detector. (One that can handle higher harmonics.)
• This unit uses an inverter, which means that an earth leak detector capable handling high harmonics in order to prevent malfunctioning of the earth
leak detector itself.)
• Earth leak detector which are especially for protecting groundfaults should be used in conjunction with main switch or fuse for use with wiring.
• This unit has a negative phase protection circuit. (If it operates, only operate the unit after correcting the wiring.)
24
• Installation
Phase and
Voltage
frequency
3N~50Hz 380-415V
3N~50Hz 380-415V
3N~50Hz 380-415V
3N~50Hz 380-415V
3N~50Hz 380-415V
3N~50Hz 380-415V
3N~50Hz 380-415V
• Systems • Installation
Recommended
Transmission
fuses
45A 0.75-1.25mm
50A 0.75-1.25mm
60A 0.75-1.25mm
60A 0.75-1.25mm
70A 0.75-1.25mm
70A 0.75-1.25mm
70A 0.75-1.25mm
2
2
2
2
2
2
2