Toshiba Carrier MMK-AP0077HPUL Manuel D'installation page 26

• 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.
Central control device
<Other than U series>
<U series>*
<U series>*
Remote controller
*Even if the indoor unit and the remote controller are "other than U series",
the wiring specification are the same.
Wired remote controller wiring
This wiring is not required when using the supplied wireless remote controller.
• For wiring remote controllers a 2 core non polarity wire must be used.
Wired remote controller wiring, remote controller inter-unit wiring Wire size: AWG 20 to AWG 14
Total wire length of wired remote controller wiring and
remote controller inter-unit wiring = L + L1 + L2 + ... Ln
Total wire length of wired remote controller inter-unit wiring = L1 + L2 + ... Ln
• The remote controller wire (Communication line) and AC 208/230V wires cannot be parallel to
contact each other and cannot be stored in the same conduits. If doing so, a trouble may be
caused on the control system due to noise or other factor.
• If U series models (TU2C-Link) are combined with models other than U series (TCC-Link), the wiring
specifications and maximum number of connectable indoor units will be changed. Pay attentions to
their communication specifications when carrying out the installation, maintenance, or repair.
For its details, refer to the "Communication line" in 10 Electrical connection.
Indoor unit
Wired remote
controller
wiring
Wired remote
controller
25-EN
Outdoor unit
(SMMS-i)
(SMMS-e)
(MiNi SMMS)
etc.
Indoor unit
Indoor unit
L1
Remote controller inter-unit wiring
[Communication line]
(L1+L2+L3) = Up to 6561'8ˮ m (2000 m)
In case of wired type only
In case of wireless type included
CAUTION
Indoor unit
L2
– 25 –
Installation Manual
Up to 1640ʼ5ˮ (500 m)
Up to 1312ʼ4ˮ (400 m)
Up to 656ʼ2ˮ (200 m)
Indoor unit
Ln