Daikin VRV IV RXYQ TYDN Series Engineering Data page 30

EDUS341411-N
1 4 2
For multi system:
1 Transmission wiring between outdoor units in the same piping
system must be connected to terminals Q1 and Q2 (TO MULTI
UNIT).
Connecting the wires to the F1, F2 (TO OUT/D UNIT) terminals
results in system malfunction.
2 Wiring to other systems should be connected to terminals F1 and
F2 (TO OUT/D UNIT) on the printed circuit board of the master
unit. The outdoor unit that connects transmission wiring to indoor
unit is the master unit. The others are sub unit.
9.5. Power wiring connection procedure
Be sure to connect the power supply wiring to the power supply ter-
minal block and hold it in place using the included clamp as shown
The L1, L2 and L3 phases of the power wiring should be secured
separately to the hook using the included clamp (1).
The ground wiring should be bound to the power wiring using the
included clamp (1) to prevent outside force from being applied to the
terminal area.
8
10
11
8
1 Power supply
2 Branch switch, Overcurrent breaker
3 Ground wire
4
5 (Only RXYQ – TYDN)
21
Installation of Outdoor Units
5 3
1 Liquid pipe
2 Gas pipe
3 Transmission wiring
4 Insulation material
5 Finishing tape
RXYQ72T
7
6
4
9
5
1
2
3
RXYQ96-168T
7
6
4
9
5
10
11
1
2
3
-
6 (Only RXYQ – TYDN)
(There are no work when installation.)
7 Attach insulation sleeves
8 Power supply terminal block
9 Ground terminal
10 Clamp (1) (accessory)
11 Vinyl tube (accessory)
CAUTION
Be sure to use crimp-style terminal with insulating sleeves for con-
Crimp-style terminal
board.
Use an appropriate screwdriver for tightening the terminal screws.
A screwdriver with a small head will strip the head and make proper
tightening impossible.
Over-tightening the terminal screws may break them.
See the following table for the tightening torque of the terminal
screws.
Screw size
M8 Power terminal
M8 Ground terminal
When pulling the ground wire out, wire it so that it comes through
improper ground connection may prevent a good ground from being
achieved.
Crimp-style terminal
When 2 wires are connected to a single terminal, connect them so
that the rear sides of the crimp contacts face each other. Also, make
sure the thinner wire is on top, securing the 2 wires simultaneously
to the resin hook using the included clamp (1).
Terminal Crip style
block terminal
9.6. Procedure for Wiring Inside Units
mission wiring using the included clamp (1) and (2).
Wire so that the ground wiring does not come into contact with the
compressor lead wiring.
If they touch, this may have an adverse effect on other devices.
The transmission wiring must be at least 2 in. (51 mm) away from
the power wiring.
Make sure all wiring do not contact to the pipes (hatching parts in
Installation Manual
Power wire
Insulating sleeve
Tightening torque
4.20-5.09 ft lbf (5.7-6.9 N m)
7.15-8.63 ft lbf (9.7-8.63 N m)
Cup washer
Cut out section
Wire : narrow
Wire : thick
Resin hook
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3P362438-1B English
3P362438-1B
31