③ Turn on power in order from the outdoor unit to indoor units. Give a one-minute or longer interval for them. Unlike the procedure set out in (2) below, you need not change settings from the 7

segment display panel.

④ Make sure that the number of indoor units indicated on the 7 segment display panel agrees with the number of the indoor units that are actually connected to the refrigerant system.

(2) In the case of a multiple refrigerant systems installation (Applicable to new SL only. In the case of previous SL, set addresses by manual setting.)

(This option is available when the interconnection wiring among refrigerant systems is on the outdoor side and new SL is chosen as the communication protocol.)

Address setting procedure

(perform these steps for each outdoor unit)

[STEP1]

(Items set before turning on power)

① Outdoor unit address setting

Set as follows before you turn on power.

Set the Outdoor Unit No. switch to a number 00 - 31. Set a unique number by avoiding the numbers assigned to other outdoor units on the network.

② Indoor unit address setting

Set as follows before you turn on power.

Make sure that the Indoor Unit No. switch is set to 000 (factory setting)

Make sure that the Outdoor Unit No. switch is set to 49 (factory setting)

③ Isolate the present refrigerant system from the network.

Disengage the network connectors (white 2P) of the outdoor units. (Turning on power without isolating each refrigerant system will result in erroneous address setting.)

[STEP2]

(Power on and automatic address setting)

④ Turn on power to the outdoor unit

Turn on power in order from the outdoor unit to indoor units. Give a one-minute or longer interval for them.

⑤ Select and enter "1" in P31 on the 7 segment display panel of each outdoor unit to input "Automatic address start."

⑥ Input a starting address and the number of connected indoor units.

Input a starting address in P32 on the 7 segment display panel of each outdoor unit.

⑦ When a starting address is entered, the display indication will switch back to the "Number of Connected Indoor Units Input" screen.

Input the number of connected indoor units from the 7 segment display panel of each outdoor unit. Input the number of connected indoor units for each outdoor unit. (You can input it from P33

on the 7 segment display panel.)When the number of connected indoor units is entered, the 7 segment display panel indication will switch to "AUX" and start blinking.

[STEP3]

(Automatic address setting completion check)

⑧ Indoor unit address determination

When the indoor unit addresses are all set, the 7 segment display panel indication will switch to "AUE" and start blinking.

If an error is detected in this process, the display will show "A○○."

Check the 7 segment display panel of each outdoor unit.

Depending on the number of connected indoor units, it may take about 10 minutes before the indoor unit addresses are all set.

[STEP4]

⑨ Network connection

⑩ Network polarity setting

After you have made sure that the network connectors are engaged, select and enter "1" in P34 on the 7 segment display panel of any outdoor unit (on only 1 unit) to specify

network polarity.

⑪ Network setting completion check

3 minutes after.

②OFF

Indoor unit power source

①OFF

Outdoor unit power source

②indoor000/outdoor 49

Indoor unit

( factory setting )

(indoor/outdoor No.SW)

①01,02(Ex）