To Route And Fix The Transmission Wiring; To Connect The Transmission Wiring - Daikin VRV IV+ RYYQ10U7Y1B Series Installation And Operation Manual

15 Electrical installation
a
d d
i
c
b
h
a
b g
c
e e
h
h h
h f f
a Field power supply (with earth leakage protector)
b Main switch
c Earth connection
d Outdoor unit
e Indoor unit
f User interface
g Indoor power supply wiring (sheathed cable) (230 V)
h Transmission wiring (sheathed cable) (16 V)
i Outdoor power supply wiring (sheathed cable)
Power supply 3N~ 50 Hz
Power supply 1~ 50 Hz
Earth wiring
15.4 To route and fix the transmission
wiring
Transmission wiring can be routed through the front side only. Fix it
to the upper mounting hole.
8~12 HP
A
b a
A
a Transmission wiring (possibility 1)
b Transmission wiring (possibility 2)
with tie wraps.
c Tie wrap. Fix to factory-mounted low voltage wiring.
d Tie wrap.
(a) Knockout hole has to be removed. Close the hole to avoid
small animals or dirt from entering.
Installation and operation manual
30
d
h
g
e
h
h
f
14~20 HP
c
c
c
d
A
b a
(a)
(a)
. Fix to pipe insulation
8~12 HP
a
X1A
Fix to the indicated plastic brackets using field supplied clamping
material.
a Wiring between the units (indoor-outdoor) (F1/F2 left)
b Internal transmission wiring (Q1/Q2)
c Plastic bracket
d Field supplied clamps
15.5

To connect the transmission wiring

The wiring from the indoor units must be connected to the F1/F2
(In‑Out) terminals on the PCB in the outdoor unit.
c
Tightening torque for the transmission wiring terminal screws:
Screw size
c
M3.5 (A1P)
In case of single outdoor unit installation
A1P
F F F F Q Q F1
1 2 1 2 1 2
d
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
e
a
F1 F2 F1 F2
b
c
F1 F2 F1 F2
a Outdoor unit PCB (A1P)
b Use the conductor of sheathed wire (2 wire) (no polarity)
c Terminal board (field supply)
d Indoor unit
e Outdoor unit
In case of multi outdoor unit installation
a
A1P
F1 F2 F1 F2 Q1 Q2
f
e d
a Unit A (master outdoor unit)
14~20 HP
b a b
Tightening torque (N•m)
0.8~0.96
F2 F1 F2 Q1 Q2
d
F1 F2
F1 F2
b c
Q1 Q2 Q1 Q2
d
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546220-1F – 2023.01
c
d