Daikin VRV IV W+ Series Installer And User Reference Manual page 110

19 | Electrical installation
Installer and user reference guide
110
In case of heat pump system
b c
A1P
F1 F2 F1 F2 Q1 Q2 Q1 Q2
e f
e
F1 F2
h
i
F1 F2
a Outdoor unit PCB (A1P)
b Unit A (master outdoor unit)
c Unit B (slave outdoor unit)
d Unit C (slave outdoor unit)
e Outdoor unit/other system transmission (F1/F2)
f Outdoor-outdoor unit transmission (Q1/Q2)
g Indoor unit
h Use the conductor of sheathed wire (2 wire) (no polarity)
i Terminal board (field supply)
In case of heat recovery system
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
F1 F2 F1 F2 Q1Q2
a
A1P
F F F F Q Q
1 2 1 2 1 2
a Unit A (master outdoor unit)
b Unit B (slave outdoor unit)
c Unit C (slave outdoor unit)
d Outdoor unit PCB (A1P)
e Master/slave transmission (Q1/Q2)
f Outdoor/indoor transmission (F1/F2)
g Outdoor unit/other system transmission (F1/F2)
h BS unit
i Indoor unit
j Cooling-only VRV indoor unit / Heating-only Hydrobox unit
▪ 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.
d
Q1 Q2
F1 F2 F1
TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT
f
g a
F1 F2 F1 F2
F1 F2 F1 F2
d
F1 F2 F1 F2
TO IN/D TO OUT/D
UNIT UNIT
h
b c
A1P A1P
Q Q Q Q
1 2 1 2
F1 F2
i
e e
g
F2 Q1 Q2
f
F1 F2 F1 F2
TO IN/D TO OUT/D
UNIT UNIT
h
F1 F2 F1 F2 F1 F2
i
j
F1 F2 F1 F2
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
RWEYQ8~14T9Y1B