Mitsubishi Heavy Industries 140KXZEN1 Service Manual Download

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(1) When one outdoor unit is used.

(3) The signal lines can also be connected using the method shown below.

Indoor and outdoor signal wires

○

Indoor and outdoor signal lines do not have a polarity.

Any of the connections in the following illustration can be made.

(2) When plural outdoor units are used

Outdoor unit

Signal line

Refrigerant pipe

Network connector

Earth wire is giving slack.

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

Outdoor signal line

terminal block

Indoor signal line

terminal block

○

Loop wiring prohibited.

The signal lines cannot form a
loop, so the wirings shown as

....... in the diagram are
prohibited.

Power cable and signal line connection

Signal terminal block

Wiring label

●

The wiring label is attached on the back side of the service panel.

Outgoing cable direction

●

It holds cables in place and protect the terminal connection from external force.

●

As like the refrigerant pipe, it can be let out in any of the following directions:

side right, front, rear and downward.

●

Give adequate slack to cables in fastening them.

M4 screw

Important

●

Connect the signal line between indoor unit and outdoor unit to A1 and B1.

●

Connect the signal line between outdoor units to A2 and B2.

●

Please use a shielded cable for a signal line and connect a shielding earth at all the indoor units and outdoor units.

Ａ

1 B1

A1・B1 A2・B2

Ａ　Ｂ

Ａ
Ｂ

A1・B1 A2・B2

7-1. Unit address setting

Cable clamp

※

1 Signal line between the indoor unit and the outdoor unit.

※

2 Signal line between the outdoor units.

※

Attention

12 mm or less

FDC112

155KXZEN1 (Single-phase)

FDC112

155KXZES1 (Three-phase)

For M5

9.5 mm or less

For M4

For M3.5

6.6 mm or less

●

For cabling of the power source terminal block,

use crimp terminals of the figure shown below.

●

For cabling of the signal line terminal block,

use crimp terminals of the figure shown below.

Remote control wiring specifications

Length (m)

100 to 200

to 300

to 400

to 600

Wire size

0.5

ｍｍ

2 cores

0.75

ｍｍ

2 cores

1.25

ｍｍ

2 cores

2.0

ｍｍ

2 cores

Specification

250V 30A

Part No.

SSA564A161

(1) For the remote control the standard wire is 0.3mm

x 2 cores. The max. length is up

to 600m. When the wire is more than 100m long, use the wire shown in the table.

Main fuse specification

7. CONTROL SETTINGS

This control system controls the controls of more than one air-conditioner's outdoor unit, indoor unit and remote control unit through communication control, using the

microcomputers built in the respective controls. Address setting needs to be done for both outdoor and indoor units. Turn on power in the order of the outdoor units and

then the indoor units.

Use 1 minute as the rule of thumb for an interval between them.

The communication protocol can be choosen from following two types. One of them is the conventional Superlink (hereinafter previous SL) and the other is the new

Superlink

Ⅱ

(hereinafter new SL). These two communication protocols have their advantages and restrictions as summarized in a table in “6. ELECTRICAL WIRING

WORK” so please choose a desirable one meeting your installation conditions such as connected indoor units and central control.

When signal cables are connected into a network involving outdoor units, indoor units or central control equipment that do not support new SL, please select

communications in the previous SL mode, even if the refrigerant system is separated from theirs.

When communication is established after setting addresses, check the communication protocol with the 7-segment display panel of the outdoor unit.

'17 • KX-SM-272