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

19.3 To connect the transmission wiring

REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
c Tie wrap. Fix to factory-mounted low voltage wiring.
d Tie wrap.
(a) Knockout hole has to be removed. Close the hole to avoid small animals or dirt from
entering.
5~12 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)
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
14~20 HP
b a b
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
19 Electrical installation
|
c
d
Tightening torque (N•m)
0.8~0.96
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
Installer and user reference guide
117