Example Of Transmission Line Connection - Daikin VRV System Installation Manual

2 Field Wiring
2-3 Heat recovery series
2-3-4 Gist of field line connection
2
Power supply
3N ~50Hz
380 ~415V
To BS unit of
indoor unit
Electric parts box of
outdoor unit (left)
Clamp the
Earth terminal anchor
Figure 4
NOTES
1 Be sure to keep the power supply wiring away from the transmission wiring.
2 No sagging of transmission line as shown in the figure 6 by always clamping them together.
3 No contact of line with refrigerant piping.
2-3-5

Example of transmission line connection

• Connect the output terminal F1 and F2 of the terminal block (X1M) on the PC board of outdoor unit with the input terminal F1 and F2 of the first
BS unit A. (See the figure 3.)
• In case of the indoor unit connect as the cool-only unit, it wire the terminal
NOTES
1 Be sure to follow limits below. If the unit-to-unit cables are beyond these limits, it may result in malfunction of transmission.
Max wiring length:
Total wiring length:
Max branches No. of branches:
2 Up to 16 branches are possible for unit-to-unit cabling. No branching is allowed after branching.
Branch
22
• Installation
(See the figure 4.)
(See the figure 5.)
Electric parts box (left)
Electric parts
box (right)
(See the figure 6.)
Electric parts box of
outdoor unit (right)
Grounding
Flat washer
screw
Spring washer
Shielded portion
C cup washer
Figure 5
Clamp material
Transmission line
Figure 6
1000m
2000m
16
Sub-
branching
• Systems • Installation
Electric parts box of
outdoor unit (right)
A3P
To BS To
IN/D UNIT OUT/D UNIT
Clamp the anchor
Use the conductor of sheated wire (2 wire)
No polarity
IN/D OUT/D.BS IN/D OUT/D.BS
BS unit A BS unit B
Remote
control
Remote
control
Remote
control
Figure 3
F1 F2
of the last BS unit.
OUT/D,BS
• Never connect the power supply to the unit-to-unit cabling terminal
block. Otherwise the entire system may break down.
Connecting line
IN/D OUT/D.BS
Last BS unit
Cool-only unit
Remote
control
Remote
control