Daikin RDXYQ8T7V1B, Installation Manual

6 Technical data

Installation manual

9

8T7V1B*
VRV IV heat exchanger unit for indoor installation
4P408444-1B – 2016.04

D

B

C

b2

b3

c1

c2

b1

a

A

A

Central user interface (etc...)

B

Compressor unit

C

Indoor unit

D

Heat exchanger unit

a

Main line. The main line is the line to which the
transmission wiring of the heat exchanger unit is
connected.

b1, b2, b3

Branch lines

c1, c2

No branch is allowed after branch

5.4.2

Guidelines when connecting the electrical
wiring

Tightening torques

Wiring

Screw size

Tightening torque

(N•m)

Power supply wiring

(power
shielded ground)

M5

2.0~3.0

Transmission wiring

M3.5

0.8~0.97

5.4.3

To connect the electrical wiring on the
heat exchanger unit

NOTICE

▪ Follow  the  wiring  diagram  (delivered  with  the  unit,

located at the inside of the service cover).

▪ Make  sure  the  electrical  wiring  does  NOT  obstruct

proper reattachment of the service cover.

1

Remove the service cover.

2

Connect the transmission wiring as follows:

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

b

X2M

X2M

X2M

X1M (A1P)

RKXYQ5

RDXYQ5

TO OUT/D

TO IN/D

F1 F2

F1 F2

a1

a2

a2

a

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

F1 F2

b

a

RKXYQ8

RDXYQ8

TO OUT/D

TO IN/D

F1 F2

F1 F2

8 HP

5  HP

a

Sh shielded cable (2 wires) (no polarity)

a1, a2

Connection of shield to earth

b

Terminal board (field supply)

WARNING

Shielded cable.

 Using shielded cable for the transmission

wiring is mandatory for 5 HP, and optional for 8 HP.

X2M

F1F2

F1F2

a1

X1M

X1M (A1P)

5 HP

8 HP

X2M

a2

F1

F2

X2M

a2

F1

F2

RKXYQ5

RDXYQ5

RKXYQ8

RDXYQ8

a1, a2

 Earth (use the screw delivered as accessory)

When using shielded cable:

▪ In case of 5 HP (

a1

 and 

a2

): Connect the shield to the

earth  of  the  compressor  unit  and  the  heat  exchanger
unit.

▪ In  case  of  8  HP  (only 

a2

):  Connect  the  shield  only  to

the earth of the heat exchanger unit.

3

Connect the power supply as follows:

1~ 50 Hz

220-240 V

X1M

a

b

c

a

Earth leakage circuit breaker

b

Fuse

c

Power supply cable

4

Route  the  wiring  through  the  frame,  and  fix  the  cables  (power
supply and transmission wiring) with cable ties.

A1P

X1M

X2M

b

a

c

c

a

Transmission wiring

b

Power supply

c

Cable tie

6

Technical data

Latest information can be found in the technical engineering data.