To Finish The Transmission Wiring - Daikin VRV IV Installer And User Reference Manual

19.4 To finish the transmission wiring

RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543427-1A – 2020.10
Screw size
M3.5 (A1P)
In case of single outdoor unit installation
A1P
F F F F Q Q F1
1 2 1 2 1 2
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
e
a
F1 F2
b
c
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
e f
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)
▪ 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.
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.
F2 F1 F2 Q1 Q2
d
F1 F2 F1 F2
F1 F2 F1 F2
b c
Q1 Q2 Q1 Q2
d d
19 Electrical installation
|
Tightening torque (N•m)
0.8~0.96
Installer and user reference guide
109