Daikin VRVIII RXYQ-PR1, Installation Manual

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Installation manual
13
RXYQ8~18P7W1BR1
VRVIII System air conditioner
4PW44039-1D
Outside unit
Sequential start
The outdoor unit PC board (A1P) is factory set at "Sequential start
available".
Setting the cool/heat operation
1 Performing cool/heat setting with the remote controller
connected to the indoor unit.
Keep the cool/heat selector switch (DS1) on the outdoor unit PC
board at the factory setting position IN/D UNIT.
(See figure 23)
2 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) on
the outdoor unit PC board (A1P) to OUT/D UNIT.
(See figure 21)
8.8. Field line connection: power wiring
The power cord must be clamped to the plastic bracket using field
supplied clamp material.
The green and yellow striped wrapped wires must be used for
grounding.
(See figure 16)
■
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: 1000 m
- Total wiring length: 2000 m
- Maximum interunit wiring length
between outdoor units: 30 m
- Transmission wiring to cool/heat
selector: 500 m
- Maximum number of branches: 16
■
Maximum number of independent interconnectable
systems :
10.
■
Up to 16 branches are possible for unit-to unit cabling.
No branching is allowed after branching.
(See figure 20)
■
Never connect the power supply to transmission
wiring terminal block. Otherwise the entire system
may break down.
■
Never connect 400 V to the terminal block of the
interconnecting wiring. Doing so will break the entire
system.
-
The wiring from the BP units must be connected to
the F1/F2 (In-Out) terminals on the PC board in the
outdoor unit.
- After installing the interconnecting wires inside the
unit, wrap them along with the on-site refrigerant
pipes using finishing tape, as shown in
figure 13 .
For the above wiring, always use vinyl cords with 0.75
to 1.25 mm
2
sheath or cables (2-core wires). (3-core
wire cables are allowable for the cooler/heater
changeover remote controller only.)
■
Be sure to keep the power line and transmission line
apart from each other.
■
Be careful about polarity of the transmission line.
■
Make sure that the transmission line is clamped as
shown in
figure 22 .
■
Check that wiring lines do not make contact with
refrigerant piping.
■
Firmly close the lid and arrange the electrical wires so
as to prevent the lid or other parts from coming loose.
■
When you do not use a wire conduit, be sure to
protect the wires with vinyl tubes etc, to prevent the
edge of the knock-out hole from cutting the wires.
(TO OUT/D UNIT F1-F2)
1 Outdoor unit
2 Indoor unit
3 Main line
4 BP unit
5 Branch line
6 Branch after branch is not allowed
7 Central remote controller (etc...)
A Transmission wiring between outdoor unit and
BP unit(s)
1 Liquid pipe
2 Gas pipe
3 Insulator
4 Interconnecting wiring
5 Finishing tape
1 Outdoor unit
2 BP unit
3 Indoor unit
4 Remote controller
1 Cool/heat selector
1 Power supply (400 V, 3N~ 50 Hz)
2 Fuse
3 Earth leakage breaker
4 Grounding wire
5 Power supply terminal block
6 Connect each power wire
RED to L1, WHT to L2, BLK to L3 and BLU to N
7 Ground wire (GRN/YLW)
8 Clamp the power wire to the plastic bracket using a field supplied
clamp to prevent external force being applied to the terminal.
9 Clamp (field supply)
10 Cup washer
11 When connecting the earth wire, it is recommended to perform
curling.
■
When routing ground wires, secure clearance of
50 mm or more away from compressor lead wires.
Failure to observe this instruction properly may
adversely effect correct operation of other units
connected to the same ground.
■
When connecting the power supply cord, the earth
connection must be made before the current-carrying
connections are established. When disconnecting the
power supply cord, the current-carrying connections
must be separated before the earth connection is.
Length of the conductors between the power supply
cord anchorage and the terminal block itself must be
such that the current-carrying conductors are
tautened before the earthing conductor is in case the
power supply cord is pulled loose from the cord
anchorage.