• Outdoor Units • HEAT PUMP • RWEYQ-MY1
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10
• VRV Systems • Outdoor Units
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10
Installation of outdoor units
10 - 8 Field wiring
10 - 8 - 3
General
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Up to 3 units can be connected by crossover power source wiring between outside units. For details, refer to the equipment design data and
technical data.
•
Make sure to connect the power source wire to the power source terminal block and to clamp it as shown in figure 8, chapter “Field line connection”.
•
As this unit is equipped with an inverter, installing a phase advancing capacitor will not only 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 machine includes an inverter device. Connect earth and leave charge to eliminate the impact on other devices by reducing noise generated
from the inverter device and to prevent leaked current from being charged in the outer hull of the product.
•
Earth leak detector which are especially for protecting ground faults should be used in conjunction with main switch or fuse for use with wiring.
•
Connect the wire securely using designated wire and fix it with attached clamp without applying external pressure on the terminal parts (terminal
for power wiring, terminal for transmission wiring and earth terminal). See “field line connection”.
•
Never connect the power supply in reversed phase.
(This product have reversed phase protection detector.
If the detector operate, replace two of the three phases (L1, L2 and L3).
10 - 8 - 4
Examples
System example
햲
Field power supply
햳
Main switch
햴
Earth leak detector
햵
Fuse
햶
Cool/heat selector
햷
Remote controller
햸
Outside unit
햹
BS unit
햺
Indoor unit
power supply wiring (sheathed cable)
transmission wiring (sheathed cable)
[Heat pump system]
[Heat recovery system]
