– 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
2.0 mm²
(Up to 1000 m)
(Up to 2000 m)
Central control line wiring
(L1)
(2-core shield wire, non-polarity)
Control wiring between outdoor units
(L4)
(2-core shield wire, non-polarity)
Wire size :
1.25 to 2.0 mm²
(Up to 100 m)
•
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.
[Communication line]
(L1+L2+L3)
= Up to 2000 m
Central control device
<Other than U series>
Outdoor unit
(SMMS-i)
(SMMS-e)
(MiNi SMMS)
etc.
<U series>*
Indoor unit
<U series>*
Remote controller
*Even if the indoor unit and the remote controller are “other than U series”, the wiring specification are the same.
Remote controller wiring
2-core with non-polarity wire is used for wiring of the remote controller wiring and group remote controllers wiring.
CAUTION
Remote controller wiring, remote controller inter-unit
wiring
Wire size: 0.5 mm² to 2.0 mm²
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + … Ln
In case of wired type only
Up to 500 m
In case of wireless type
included
Up to 400 m
Total wire length of remote controller inter-unit wiring = L1 + L2 + … Ln
Up to 200 m
L1
L
L2
Ln
Indoor unit
Remote controller inter-unit wiring
Indoor unit
Indoor unit
Indoor unit
Remote
controller
Remote
controller
wiring
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communication specifications when carrying out the installation, maintenance, or repair. For its details, refer
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Wire connection
REQUIREMENT
Be sure to connect the wires matching the terminal num
E
ers. Incorrect connection causes a trou
E
le.
Be sure to pass the wires through the
E
ushing of wiring connection port of the indoor unit.
Keep a margin
Approx. 100 mm
on a wire to hang down the electrical control
E
ox at servicing, etc.
The low-voltage circuit is provided for the remote controller.
Do not connect the high-voltage circuit
M
DN
e a loop on the wire for margin of the length so that the electrical control
E
ox can
E
e ta
N
en out during servicing.
29-EN
30-EN
