78
(3) Connect the inter-unit control wiring to 1 and 2 on the No. 1 indoor unit terminal plate, and to 1 and 2 on the
outdoor unit terminal plate.
Connect the wiring in the same way from the other outdoor units to U1 and U2 on the indoor units terminal
plates (different refrigerant system).
(4) Perform automatic address setting from the outdoor unit. (For the automatic address setting procedure, refer to
10-16-4.)
* Models with auxiliary heaters cannot be used for “crossover wiring” of the indoor unit power wires. (Use a pull
box to divide the wiring.)
* Be sure to use the indoor unit temperature sensor (body sensor) when using this control. (Status at shipment)
NOTE
10-16-3. Setting the outdoor unit system addresses
For basic wiring diagram 2 (Set the system addresses: 1, 2,...)
System address No.
System address 10s digit
(2P DIP switch)
System address 1s place
(Rotary switch)
0
Automatic address
(Setting at shipment = “0”)
1
(If outdoor unit is No. 1)
“0” setting
Both OFF
Both OFF
Both OFF
10s digit ON
20s digit ON
10s digit and 20s digit ON
“1” setting
“2” setting
“1” setting
“1” setting
“0” setting
2
(If outdoor unit is No. 2)
11
(If outdoor unit is No. 11)
21
(If outdoor unit is No. 21)
30
(If outdoor unit is No. 30)
ON
ON
OFF
1
2
ON
ON
OFF
1
2
ON
ON
OFF
1
2
ON
ON
OFF
1
2
ON
ON
OFF
1
2
ON
ON
OFF
1
2
ON
1
2
0
System address rotary switch
(Set to “0” at time of shipment)
System address rotary switch
System address
DIP switch
OFF
ON
10s
20s
3 ~ 5HP
Outdoor unit control PCB
Fig. 10-15
System address rotary switch
System address 10s digit and 20s digit
DIP switch
Automatic address
button (black)
Terminal plug (black)
04-393 DC INV Tech p 64-110 12/13/04 11:35 AM Page 78
