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RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV System Air Conditioner
4P329765-1 – 2012.09
Installation and operation manual
22
1
Insulation material
2
Caulking etc.
12. Electrical wiring work
12.1. Precautions on electrical wiring work
Point of attention regarding quality of the public electric power
supply
This equipment complies with respectively:
EN/IEC 61000-3-11
(4)
provided that the system impedance Z
sys
is less than or equal to Z
max
.
EN/IEC 61000-3-12
(5)
provided that the short-circuit power S
sc
is greater than or equal to the minimum S
sc
value.
At the interface point between the user's supply and the public
system. It is the responsibility of the installer or user of the equipment
to ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply with
respectively:
Z
sys
less than or equal to Z
max
.
S
sc
greater than or equal to the minimum S
sc
value.
WARNING
Electrical installation. All field wiring and components must
be installed by a licensed electrician and must comply with
the applicable legislation.
NOTICE
Electrical wiring work recommendations. To persons in
charge of electrical wiring work: Do not operate the unit
until the refrigerant piping is complete.
"10.4. Leak test and
vacuum drying" on page 20
. Running the unit before the
piping is ready will break the compressor.
DANGER: Electrical shock
See
"2. General safety precautions" on page 2
.
WARNING
A main switch or other means for disconnection,
having a contact separation in all poles, must be
incorporated in the fixed wiring in accordance with the
applicable legislation.
Use only copper wires.
All field wiring must be carried out in accordance with
the wiring diagram supplied with the unit and the
instructions given below.
Never squeeze bundled cables and be sure that it
does not come in contact with the non-insulated
piping and sharp edges. Be sure no external pressure
is applied to the terminal connections.
Power supply wires must be attached securely.
If the power supply has a missing or wrong N-phase,
equipment will break down.
Be sure to establish an earth. Do not earth the unit to
a utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.
Be sure to install an earth leakage protector in
accordance with the applicable legislation. Failure to
do so may cause electric shock or fire.
Be sure to use a dedicated power circuit, never use a
power supply shared by another appliance.
2
1
WARNING
When installing the earth leakage protector be sure
that it is compatible with the inverter (resistant to high
frequency electric noise) to avoid unnecessary
opening of the earth leakage protector.
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
a capacitor abnormal heating accident due to high-
frequency waves. Therefore, never install a phase
advancing capacitor.
Be sure to install the required fuses or circuit
breakers.
Do not operate until refrigerant piping work is
completed. (If operated before completion of the
piping work, the compressor may break down.)
Never remove a thermistor, sensor, etc., when
connecting power wiring and transmission wiring.
(If operated without thermistor, sensor, etc., the
compressor may break down.)
The reversed phase protection detector of this
product only functions when the product starts up.
Consequently reversed phase detection is not
performed during normal operation of the product.
The reversed phase protection detector is designed to
stop the product in the event of an abnormality when
the product is started up.
Replace two of the three phases (L1, L2, and L3)
during reverse-phase protection abnormality.
If there exists the possibility of reversed phase after a
momentary black out and the power goes on and off
while the product is operating, attach a reversed
phase protection circuit locally. Running the product in
reversed phase can break the compressor and other
parts.
(4)
European/International Technical Standard setting the limits for voltage
changes, voltage fluctuations and flicker in public low-voltage supply
systems for equipment with rated current
≤
75 A.
(5)
European/International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage systems
with input current >16 A and
≤
75 A per phase.
Z
max
(
Ω
)
Minimum S
sc
value (kVA)
RYYQ/RYMQ/RXYQ-8
—
1216
RYYQ/RYMQ/RXYQ-10
—
564
RYYQ/RYMQ/RXYQ-12
—
615
RYYQ/RYMQ/RXYQ-14
—
917
RYYQ/RYMQ/RXYQ-16
—
924
RYYQ/RYMQ/RXYQ-18
—
873
RYYQ/RYMQ/RXYQ-20
—
970
RYYQ/RXYQ-22
—
1179
RYYQ/RXYQ-24
—
2140
RYYQ/RXYQ-26
—
1532
RYYQ/RXYQ-28
—
1539
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