– 15 –
<In the case of combining with outdoor units of Super Modular Multi System u series (SMMS-u)>
Follow the wiring specifications in the table below even when units other than U series are mixed in the indoor units
and remote controllers to be connected.
•
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 1000 m.
REQUIREMENT
For connection of Uv line / Uc line or Uh 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.
Uv
line and
Uc
line
(L2, L3, L4)
(2-core shield wire, non-polarity)
Wire size:
1.0 to 1.5 mm²
(Up to 1000 m)
Uh
line
(L1)
(2-core shield wire, non-polarity)
Wire size:
1.0 to 1.5 mm²
(Up to 1000 m)
2.0 mm²
(Up to 2000 m)
U2
U4
U3
U4
U3 U4
Uh
U6
U4
U1 U2
Uv
A B
U6
U4
U1 U2
Uv
A B
U6
U4
U1 U2
Uv
A B
U6
U4
U1 U2
Uv
A B
U1
U3
㹊㸯
㹊㸰
㹊㸱
㹊㸲
U2
Uv
U5 U6
Uc
U3 U4
Uh
U1
U2
Uv
U5 U6
Uc
U3 U4
Uh
U1
U2
Uv
U5 U6
Uc
U3 U4
Uh
U1
[Uh line]
L1
= Up to 2000 m
[Uv and Uc line]
L2
= Up to 1000 m
(L3 + L4)
= Up to 1000 m
Central control device
Outdoor unit
Indoor unit
Remote controller
<U series>
<U series>*
<U series>*
*Even if the indoor units, the remote controllers, and the central control device are models
other than U series, their system diagrams for the wiring specifications are the same as the
system diagram above.
(SMMS-u)
<U series>*
<In the case of combining with outdoor units other than Super Modular Multi System u series (SMMS-u)>
• 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.
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)
U2
U4
U3
U4
U3 U4
Uh
U6
U4
U1 U2
A B
U6
U4
U1 U2
A B
U6
U4
U1 U2
A B
U6
U4
U1 U2
A B
U1
U3
㹊㸰
㹊㸱
㹊㸲
U2
U5 U6
U3 U4
U1
U2
U5 U6
U3 U4
U1
U2
U5 U6
U3 U4
U1
㹊㸯
Uv
Uv
Uv
Uv
[Communication line]
(L1 + L2 + L3)
= Up to 2000 m
L4
= Up to 100 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 units, the remote controllers, and the central control device are models
other than U series, their system diagrams for the wiring specifications are the same as the
system diagram above.
<U series>*
29-EN
30-EN
Summary of Contents for MMU-UP0051MH-E
Page 31: ...EB99840501 ...
