Daikin VRV IV+ RXYTQ10U5/U7YF, Инструкция по установке и эксплуатации, Страница: 27 / 44

15 Electrical installation
Installation and operation manual
27
RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P546223-1C – 2021.11
(a) Knockout hole has to be removed. Close the hole to avoid
small animals or dirt from entering.
X1A
c
d
a b a b
8 HP 10~16 HP
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
15.4 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.
Tightening torque for the transmission wiring terminal screws:
Screw size Tightening torque (N•m)
M3.5 (A1P) 0.8~0.96
In case of single outdoor unit installation
F
1
F
2
F
1
F
2
Q
1
Q
2
F1 F1 F2 F2 Q1 Q2
F1 F2 F1 F2 F1 F2
F1 F2 F1 F2 F1 F2
b
c
a
d
e
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
A1P
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
F1 F2 F1 F2 Q1 Q2 Q1 Q2
A1P
d d e f
b a c
Q1 Q2
a Unit A (master outdoor unit)
b Unit B (slave outdoor unit)
c Unit C (slave outdoor unit)
d Master/slave transmission (Q1/Q2)
e Outdoor/indoor transmission (F1/F2)
f Outdoor unit/other system transmission (F1/F2)
INFORMATION
U-series units cannot share the same refrigerant circuit
with T-series units. However, electrically, U-series units
and T-series units can be connected via F1/F2.
▪ The interconnecting wiring between the outdoor units in the same
piping system must be connected to the Q1/Q2 (Out Multi)
terminals. Connecting the wires to the F1/F2 terminals results in
system malfunction.
▪ The wiring for the other systems must be connected to the F1/F2
(Out-Out) terminals of the PCB in the outdoor unit to which the
interconnecting wiring for the indoor units is connected.
▪ The base unit is the outdoor unit to which the interconnecting
wiring for the indoor units is connected.
15.5 To finish the transmission wiring
After installing the transmission wires inside the unit, wrap them
along with the on-site refrigerant pipes using finishing tape, as
shown in figure below.
a b c d e
a Liquid pipe
b Gas pipe
c Insulator
d Transmission wiring (F1/F2)
e Finishing tape
15.6 To route and fix the power supply
The power supply wiring can be routed from the front and left side.
Fix it to the lower mounting hole.