Daikin RXYSQ-TAV Installation Manual page 23

Only for V1: Equipment complying with EN/IEC 61000-3-12
Precautions when laying power wiring
Use round pressure terminals for connections to the power
terminal block.
When none are available, follow the instructions below.
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Do not connect wiring of different thicknesses to the
power terminal block. (Slack in the power wiring may
cause abnormal heat.)
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When connecting wiring which is the same thickness,
do as shown in the figure below.
1 2
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For wiring, use the designated power wire and
connect firmly, then secure to prevent outside
pressure being exerted on the terminal board.
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Use an appropriate screwdriver for tightening the
terminal screws. A screwdriver with a small head will
strip the head and make proper tightening impossible.
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Over-tightening the terminal screws may break them.
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See the table below for tightening torque for the
terminal screws.
Tightening torque (N•m)
M5 (Power terminal block/ground wire)
M4 (Shielded ground)
M3.5 (Control wiring block)
Field line connection: Control wiring and cool/heat selection
If an excessive force is applied while connecting a cable to
the terminal block on the PC board, the PC board may be
damaged.
For Sky Air or room air conditioner indoor units only: see
1 Cool/heat selector
2 Outdoor unit PC board
3 Take care of the polarity
4 Use the conductor of sheathed wire (2 wire) (no polarity)
5 Terminal board (field supply)
6 BP unit
7 Indoor unit
For VRV indoor units only: see
1 Cool/heat selector
2 Outdoor unit PC board
3 Take care of the polarity
4 Use the conductor of sheathed wire (2 wire) (no polarity)
5 Terminal board (field supply)
(1) 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.
RXYSQ6TAV1B
VRV IV-S System air conditioner
4P482260-1 – 2017.03
(1)
1 Round pressure terminal
2 Power wire
2.39~2.92
1.18~1.44
0.79~0.97
figure
figure 14.
Setting the cool/heat operation
1 For VRV indoor units only:
Performing cool/heat setting with the remote controller
connected to the indoor unit.
Keep the cool/heat selector switch (DS1-1) on the outdoor unit
PC board at the factory setting position IN/D UNIT.
figure 16).
1 Remote controller
2 For Sky Air or room air conditioner indoor units only:
Performing cool/heat setting with the cool/heat selector.
Connect the cool/heat selector remote controller (optional) to the
A/B/C terminals and set the cool/heat selector switch (DS1-1) on
the outdoor unit PC board to OUT/D UNIT.
1 Cool/heat selector
NOTE
For low-noise operation or demand operation, it is
necessary to get the optional 'External control adaptor for
outdoor unit' (DTA104A61/62).
For details, see the installation manual attached to the
adaptor.
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For Sky Air or room air conditioner indoor units only:
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: 200 m
Total wiring length: 300 m
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For VRV indoor units only:
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: 300 m
Total wiring length: 600 m
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Up to 9 branches are possible for unit-to unit cabling.
For VRV indoor units only: No branching is allowed
after branching.
13.
1
2
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Never connect the power supply to unit-to-unit cabling
terminal block. Otherwise the entire system may
break down.
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The wiring from the BP units must be connected to the F1/F2
(In-Out) terminals on the PC board in the outdoor unit.
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After installing the interconnecting wires inside the unit, wrap
them along with the on-site refrigerant pipes using finishing tape,
as shown in
1 Liquid pipe
2 Gas pipe
3 Interconnecting wiring
4 Insulator
5 Finishing tape
For the above wiring, always use vinyl cords with 0.75 to 1.25 mm
sheath or cables (2-core wires). (3-core wire cables are allowable for
the cooler/heater changeover remote controller only.)
When the cool/heat selector is set to heat, you
cannot select cooling with the remote controller.
(See figure 18).
Branch
Subbranching
figure 17.
(See
(See figure 15).
2
Installation manual
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