Group Addressing - LG Multi V ARUN053GF2 Installation Manual

Variable refrigerant flow outdoor unit 4.4 tons

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Installation manual (26 pages)

Table of Contents

Group addressing Procedure

1. Verify that the power is OFF to both the indoor units and the Space II units. If power is still on, shut it off.

2. Communication cables should be connected to B and A terminals on the central controller and to INTERNET terminals B and A on the

Space II unit, matching polarities (A → A, B → B ).

3. Apply power to the entire system.

4. Set the group numbers and indoor unit numbers using a wireless handheld or wired

zone controller, see subsections below and on the next page.

5. To designate several indoor units into one group, see subsections below and on the

next page.

Terminating Group Controlled Indoor Units

If any of the indoor units were specified to operate in unison, create a group control communications circuit between the indoor units using a

group control cable kit consisting of three (3) cables:

• One pigtail cable.

• One Y-cable.

• One extension cable segment.

1. Before proceeding with group control cable terminations, verify power is off at all indoor units affected.

2. Identify which indoor unit will be the "Master" unit of the group. If not already recorded, record the "Master" and the "Slave" identity

assignment to each indoor unit in the group on the Pre-commissioning Device Configuration Worksheet.

3. Termination Procedure:

• Starting with the Master unit, plug in the male end of the pigtail cable into the CN-REMO socket. At the last Slave indoor unit in the

group, a pigtail cable is not required. Plug the male end of the extension cable coming from the previous indoor unit into the CN-REMO

socket.

• Plug the Y-cable into the pigtail at each indoor unit except for the last Slave indoor unit in the group where no Y-cable cable will be need-

ed.

• Connect two extension cable segments to each "Y" cable except for the "Y" cable connected to the Master indoor unit. At the Master

indoor unit, connect one extension cable and the communications cable from the zone controller to the Y-cable.

Plan the Central Control Address Assignments

Obtain job specifications / preferences; if there are no preferences:

• Hex assignments do not have to be assigned in any particular order, or an order defined by the routing of the communications cable

between the indoor units. In most cases, Hex addresses can be skipped.

• All members of a Hex Group are not required to be on the same Multi V system.

• Addresses can be assigned at random, not in any particular order, and can be skipped.

On AC EZ, do not skip addresses. Start with Hex address 0. Buttons have pre-assigned Hex addresses. If an address is skipped, the associated

button will do nothing.

Due to our policy of continuous product innovation, some specifications may change without notification.

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Figure 61: Connections for Group Addressing.

Space Unit Main PCB Terminal Block

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