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

6 | Installation

6.8.6 To connect the transmission wiring

Installer and user reference guide
80
(a) Knockout hole has to be removed. Close the hole to avoid small animals or dirt from
entering.
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
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
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
14~20 HP
b a b
F2 F1 F2 Q1 Q2
d
F1 F2 F1 F2
F1 F2 F1 F2
c
d
Tightening torque (N•m)
0.8~0.96
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1A – 2019.10