Panasonic 2WAY Multi Technical & Service Manual page 178

3) Remote control wiring
● Wiring
• Between the remote controller and the indoor unit: Non-polar biaxial wires
• Between indoor units: Non-polar biaxial wires
● Wire types
Eco electrical Previous
wire code code
EM-ECTF VCTF
ECO120 VCT
EM-MEE-S MVVS
Note: Either block out the light or use UV-resistant cables if wiring is affected by ultraviolet rays (sunlight,
lighting, etc.)
● Cable thickness : 0.5mm
● Insulated length
• Maximum 500 m for the entire cable length (400 m when wireless remote controllers and simple remote
controllers equipped with backlights are used within the group.)
• Maximum 200 m for the entire cable length between indoor units. (L
● Precautions
1. Do not lay signal cables next to power line in order to prevent miss-operations.
2. Maintain a distance of 50 mm or more between the power lines of other air-conditioning units
manufactured by Panasonic.
3. Maintain a distance of 300 mm or more between other power lines.
4. In the event of the cables needing to be laid within the above-mentioned distances, make sure one of
them is enclosed in a steel power-line conduit.
5. When shielded cables are in use, make sure one side is grounded.
6. Do not use the same cable for signal cables and power cables. (Fig.1)
7. Do not use multi-core cables for two or more signal cables. (Fig.2)
8. If high-frequency equipment exists nearby, make sure the units are installed at least 3 m away from
them.
Enclose the remote controller in a steel box and the remote controller wires in a steel conduit or steel
conduit pipe.
9. Remote controller wires can be connected to a maximum of two items of control equipment to which
connections are possible. However only one can be used per group for simple remote controllers
equipped with backlights. They cannot be used in combination.
10. It is prohibited for the refrigerant system to be shared between units and for certain indoor units to be
group controlled. Failure to observe this may result in misaligned modes and certain indoor units not
operating.
(Figure 1)
Multi-core cable
Name (previous name)
Heat-resistant polyethylene insulated heat-resistant polyethylene
sheath cabtire round cord (Vinyl cabtire round cord)
Heat-resistant polyethylene insulated heat-resistant polyethylene
sheath cabtire round cable (Vinyl insulated vinyl cabtire cable)
Heat-resistant polyethylene cord for use with covered microphones
(Vinyl cord for use with covered microphones)
2 2
- 2mm
Indoor unit 1 Indoor unit 2
Between units
Power supply
V–59
+ L + L + L
1 2 3
Indoor unit 3
(Figure 2)
Multi-core cable
Signal cable
Applicable
standard
JIS C 3306
JCS4501
JIS C 3312
JCS4271
= Max 200 m)
n
Indoor unit 8
Remote controller