30-EN
29-EN
– 15 –
<In the case of combining with outdoor units other than Super Modular Multi System u series (SMMS-u)>
Control wiring between indoor units, and outdoor unit
(L2, L3)
(2-core shield wire, non-polarity)
Wire size :
1.25 mm²
(Up to 1000 m)
Central control line wiring
(L1)
(2-core shield wire, non-polarity)
2.0 mm²
(Up to 2000 m)
Control wiring between outdoor units
(L4)
(2-core shield wire, non-polarity)
Wire size :
1.25 to 2.0 mm²
(Up to 100 m)
y
The length of the communication line (L1+L2+L3) means the total length of the inter-unit wire length between
indoor and outdoor units added with the central control system wire length.
REQUIREMENT
For connection of between indoor and outdoor units line / between outdoor and outdoor units line or central
control line, wire each line using wires with the same type and size. If different wire types and size are mixed
and used in a system, communication trouble is caused.
[Communication line]
(L1+L2+L3)
= Up to 2000 m
Central control device
Outdoor unit
Indoor unit
Remote controller
<Other than U series>
<U series>*
<U series>*
(SMMS-i)
(SMMS-e)
(MiNi SMMS)
etc.
* Even if the indoor unit and the remote controller are "other than U series", the wiring
speci
fi
cation are the same.
Wire connection
REQUIREMENT
y
Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
y
Be sure to pass the wires through the bushing of wiring connection port of the indoor unit.
y
Keep a margin (Approx. 100 mm) on a wire to hang down the electrical control box at servicing, etc.
y
The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
y
Make a loop on the wire for margin of the length so that the electrical control box can be taken out during
servicing.
1. Remove the cover of the electrical control box by taking off the mounting screws and pushing the hooking
section. (The cover of the electrical control box remains hanged to the hinge.)
2. Connect the power supply wire and remote controller wire to the terminal block of the electrical control box.
3. Tighten the screws of the terminal block, and
fi
x the wires with cord clamp attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
4. Mount the cover of the electrical control box without pinching wires.
(Mount the cover after wiring on the ceiling panel.)
L N
Uv(U1) Uv(U2) A B
* Cable clamp can be attached on left side.
Wire
type
Speci
fi
cation
Cable clamping
position
Cabtyre
cable
3-core stranded
wire 2.5 mm²
Side D
Cabtyre
cable
4-core stranded
wire 1.5 mm²
Side C
Side D (Space: 8.5 mm)
Side C (Space: 4 mm)
Power supply terminal block
Cord clamp
Indoor / Outdoor inter-unit
wire / Remote controller
terminal block
R
(L)
S
(N)
Hinge
Screw
Louver connector
(CN510:White)
Earth wire
Power supply wire
40
10
10
60
