Daikin VRV IV Q+ Series Installer And User Reference Manual page 107

RXYQQ8~20U7Y1B
VRV IV Q+ series heat pump
4P546229-1A – 2020.10
WARNING
▪
If the power supply has a missing or wrong N-phase, equipment might break
down.
▪
Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber,
or telephone earth. Incomplete earthing may cause electrical shock.
▪
Install the required fuses or circuit breakers.
▪
Secure the electrical wiring with cable ties so that the cables do NOT come in
contact with sharp edges or piping, particularly on the high-pressure side.
▪
Do NOT use taped wires, stranded conductor wires, extension cords, or
connections from a star system. They can cause overheating, electrical shock or
fire.
▪
Do NOT install a phase advancing capacitor, because this unit is equipped with an
inverter. A phase advancing capacitor will reduce performance and may cause
accidents.
CAUTION
Do NOT push or place redundant cable length in the unit.
NOTICE
The distance between the high voltage and low voltage cables should be at least
50 mm.
WARNING
For the existing power supply and transmission wiring, check that the specifications
match the requirements described in this chapter and that other parts (especially
terminals) do not appear to have deteriorated. Take the appropriate steps (e.g.
replacement) if necessary.
NOTICE
Do NOT operate the unit until the refrigerant piping is complete. Running the unit
before the piping is ready will break the compressor.
NOTICE
If the power supply has a missing or wrong N-phase, equipment will break down.
NOTICE
Do NOT install a phase advancing capacitor, because this unit is equipped with an
inverter. A phase advancing capacitor will reduce performance and may cause
accidents.
NOTICE
NEVER remove a thermistor, sensor, etc., when connecting power wiring and
transmission wiring. (If operated without thermistor, sensor, etc., the compressor
may break down.)
19 Electrical installation
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Installer and user reference guide
107