16
27
CAUTION
(1)
When linking outdoor units in a network, see the section “ATTENTION!”.
(2)
Do not install the inter-unit control wiring in a way that forms a loop.
(3)
Do not install the inter-unit control wiring such as star branch wiring. Star branch wiring causes mis-address setting.
(4)
If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
Outdoor unit
Central Controller
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
More than 2m required
Outdoor unit
Branch point
Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Branch point
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Outdoor unit
Prohibited
Prohibited
NO
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28
Shielded wire
Ground
G
round
(5)
Use shielded wires for inter-unit control wiring (C)
and ground the shield on both sides,
otherwise misoperation from noise may occur.
Connect wiring as shown in the section “4-3. Wiring System Diagram.”
How to Connect Wiring to Terminal
■
For stranded wiring
(1)
Cut the wire end with cutting pliers, then strip the insulation
to expose the stranded wiring about 10 mm and tightly
twist the wire ends.
Stranded wire
Ring pressure terminal
Strip 10 mm
(2)
Using a Phillips head screwdriver, remove the terminal
screw(s) on the terminal board.
(3)
Using a ring connector fastener or pliers, securely clamp
each stripped wire end with a ring pressure terminal.
(4)
Place the ring pressure terminal, and replace and tighten
the removed terminal screw using a screwdriver.
Screw and Special washer
Ring pressure terminal
Terminal board
Ring pressure terminal
Screw
Special washer
Wire
Wire
(6) •
Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 5 or 3 *1.5 mm
2
flexible cord. Type designation 60245 IEC57 (H05RN-F, GP85PCP etc.) or heavier cord.
•
Use the standard power supply cables for Europe (such as H05RN-F or H07RN-F which conform to CENELEC (HAR)
rating specifications) or use the cables based on IEC standard. (60245 IEC57, 60245 IEC66)
W
ARNING
Loose wiring may cause the terminal to overheat or result in unit malfunction.
A
¿
re hazard may also exist.
Therefore, ensure that all wiring is tightly connected.
When connecting each power wire to the terminal, follow the instructions on “How to Connect Wiring to Terminal”
and fasten the wire securely with the fixing screw of the terminal board.
■
Examples of shield wires
(1)
Remove cable coat not to scratch braided shield.
(2)
Unbraid the braided shield carefully and twist the
unbraided shield wires tightly together. Insulate the shield
wires by covering them with an insulation tube or wrapping
insulation tape around them.
Insulation tape
Shield mesh
(3)
Remove coat of signal wire.
8 mm
Insulation tape
Shield mesh
(4)
Attach ring pressure terminals to the signal wires and the
shield wires insulated in Step (2).
■
Earth wire for power supply
The earth wire should be longer than the other lead wires for
electrical safety.
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00̲280434̲Mini̲VRF̲Mentsuke.indb 16
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2016/06/16 11:37:39
2016/06/16 11:37:39