Daikin RXYTQ20U7YF [103/152] To connect the transmission wiring

Daikin RXYTQ10U7YF [103/152] To connect the transmission wiring
19 | Electrical installation
Installer and user reference guide
103
RXYTQ8~16U7YF
VRV IV+ heat pump for high ambient temperatures
4P561157-1A – 2020.10
19.3 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
F1 F2 F1 F2 Q1 Q2
F1 F1F2 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 de
f
ba 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.

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