Toshiba Carrier MMK-AP0077HPUL Manuel D'installation page 25

<In the case of combining with outdoor units of Super Modular Multi System u series (SMMS-u)>
Uv line and Uc line (L2, L3, L4)
(2-core shield wire, non-polarity)
Uh line (L1)
(2-core shield wire, non-polarity)
• U (v, h, c) line means of control wiring.
Uv line : Between indoor and outdoor units.
Uh line : Central control line.
Uc line : Between outdoor and outdoor units.
• Uv line and Uc line are independent from another refrigerant line. Total length of Uv and Uc lines
(L3+L4) in each refrigerant line is up to 3280ʼ10ˮ (1000 m).
Central control device
<U series>
Outdoor unit
(SMMS-u)
<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.
<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)
Central control line wiring (L1)
(2-core shield wire, non-polarity)
Control wiring between outdoor units (L4)
(2-core shield wire, non-polarity)
AWG16
Wire size :
0.75 to 1.25 mm²
AWG16
Wire size :
AWG14
Wire size :
Wire size : AWG14
– 24 –
Installation Manual
(Up to 1640'5ˮ (500 m))
(Up to 3280'10ˮ (1000 m))
(Up to 3280'10ˮ (1000 m))
(Up to 6561'8ˮ (2000 m))
[Uh line]
L1 = Up to 6561'8ˮ (2000 m)
[Uv and Uc line]
L2 = Up to 3280'10ˮ (1000 m)
(L3+L4) = Up to 3280'10ˮ (1000 m)
AWG16 (Up to 3280'10ˮ (1000 m))
AWG14 (Up to 6561'8ˮ (2000 m))
(Up to 328'1ˮ (100 m))
24-EN