Mitsubishi Electric PURY-RP200YJM-A [17/31] Wiring transmission cables

11.3. Wiring transmission cables

1 Types of control cables

1. Wiring transmission cables

Types of transmission cables: Shielding wire CVVS, CPEVS or MVVS

Cable diameter: More than 1.25 mm

Maximum wiring length: Within 200 m

Maximum length of transmission lines for centralized control and indoor/outdoor transmission lines (Maximum length via outdoor units): 500 m MAX

The maximum length of the wiring between power supply unit for transmission lines (on the transmission lines for centralized control) and each outdoor unit and

system controller is 200 m.

2. Remote control cables

M-NET Remote Controller

Kind of remote control cable Sheathed 2-core cable (unshielded) CVV

Cable diameter 0.3 to 1.25 mm

(0.75 to 1.25 mm

Remarks

When 10 m is exceeded, use cable with

the same speciﬁ cations as 1. Wiring

transmission cables.

MA Remote Controller

Kind of remote control cable Sheathed 2-core cable (unshielded) CVV

Cable diameter 0.3 to 1.25 mm

(0.75 to 1.25 mm

Remarks Within 200 m

* Connected with simple remote controller.

2 Wiring examples

Controller name, symbol and allowable number of controllers.

Name Code Possible unit connections

Outdoor unit Main unit OC – (*2)

Sub unit OS – (*2)

BC controller Main unit BC One controller for one OC

Sub unit BS Zero, one or two controllers for one OC

Indoor unit Indoor unit controller IC 1 to 50 units per 1 OC (*1)

Remote controller Remote controller (*1) RC 2 units maximum per group

Other Transmission booster unit RP 0 to 2 units per 1 OC (*1)

*1 A transmission booster (RP) may be required depending on the number of connected indoor unit controllers.

*2 OC and OS of the outdoor units in the same refrigerant system are automatically identiﬁ ed. They are identiﬁ ed as OC and OS in descending order of capacity. (If the

capacity is the same, they will be in ascending order of their address number.)

Example of a group operation system with multiple outdoor units (Shielding wires and address setting are

necessary.)

[Fig. 11.3.1] M-NET Remote Controller (P.7)

*1: When the power supply unit is not connected to the transmission line for centralized control, disconnect the male power supply connector (CN41) from ONE

outdoor unit in the system and connect it to CN40.

*2: If a system controller is used, set SW2-1 on all of the outdoor units to ON.

[Fig. 11.3.2] MA Remote Controller (P.8)

<A> Change the jumper connector from CN41 to CN40

<B> SW2-1:ON

<C> Keep the jumper connector on CN41

Group 1

Group 3

Group 5

Shielded wire

Sub remote controller

( ) Address

[Fig. 11.3.3] Combination of outdoor units and transmission booster unit (P.8)

( ) Address

Daisy-chain terminals (TB3) on outdoor units in the same refrigerant system together.

Leave the power jumper connector on CN41 as it is. When connecting a system controller to the transmission line (TB7) for centralized control, refer to

[Fig. 11.3.1], [Fig. 11.3.2], or DATA BOOK.

a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well for all OC-OC, OC-OS and IC-IC wiring intervals.

b. Use feed wiring to connect terminals M1 and M2 and the earth terminal

on the transmission line terminal block (TB3) of each outdoor unit (OC) to terminals M1,

M2 and terminal S on the transmission line block of the indoor unit (IC). For OC and OS, connect TB3 to TB3.

c. Connect terminals 1 (M1) and 2 (M2) on the transmission line terminal block of the indoor unit (IC) that has the most recent address within the same group to the

terminal block on the remote controller (RC).

d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor unit in a different refrigerant system (OC). For OC

and OS in the same refrigerant system, connect TB7 to TB7.

e. When the power supply unit is not installed on the central control transmission line, change the jumper connector on the control board from CN41 to CN40 on only

one outdoor unit in the system.

f. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which the jumper connector was inserted into CN40 in

the step above to the earth terminal

in the electrical component box.

g. Set the address setting switch as follows.

* To set the outdoor unit address to 100, the outdoor address setting switch must be set to 50.

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Mitsubishi Electric PURY-RP200YJM-A [17/31] Wiring transmission cables

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