Panasonic U-72MF2U9 Service Manual page 202

5. Auto Address Setting
Example: Basic Wiring Diagram (2)
• Case of link wiring
No. 1 refrigerant system
Number of
outdoor units
(3 units setting)
1
Central Controller
2
Inter-unit
control wiring
3
No. 2 refrigerant system
4
5
6
No. z refrigerant system
7
Inter-unit
control wiring
8
9
* See the section "ATTENTION!".
Unit 1 setting (outdoor main unit)
System address No. of indoor units
(System 1 setting) (13 units setting)
(SW3)
(SW1) (SW2)
ON
ON
1 2
(SW4)
OFF
ON
1 2 3
(SW6) Unit
(SW5)
ON
number
ON
ON
setting
(unit 1)
1 2 3
OFF
1
Outdoor unit
Unit 1
system 1 (Main)
1-1
Indoor unit
Remote
Controller
Unit 1 setting (outdoor main unit)
System address
(System 2 setting)
(SW1) (SW2)
ON
1 2
Number of
outdoor units
(SW6)
(2 units setting)
ON
1 2 3
Outdoor unit
system 2
Indoor unit
Remote
Controller
Outdoor unit
system z
ON
Unit 2 setting
OFF
(SW5)
Unit
ON ON
number
setting
(unit 2) 1 2 3
2 3 OFF
Set the terminating
resistance pin to
Unit 2
SHORT side. (CN67)
(Sub)
Inter-outdoor unit
control wiring
Inter-unit control wiring
1-2 1-3
Remote control
communication wiring
Number of indoor units
(9 units setting)
(SW3)
ON
(SW4)
OFF
ON
ON
1 2 3 OFF
Unit
(SW5)
ON
ON
number
ON
setting
(unit 1)
OFF
OFF 1 2 3
Set the terminating
Unit 1
resistance pin to
(Main)
OPEN side. (CN67)
Inter-unit control wiring
2-1 2-2
Remote control
communication wiring
Set the terminating
Unit 1
resistance pin to
(Main)
SHORT side. (CN67)
Inter-unit control wiring
To z refrigerant system indoor unit
6 - 8
3WAY VRF SYSTEM
Setting of terminal pin (CN67)
Refrigerant circuit No. 1
Unit No. 1 (Main) : short-circuit (at shipment)
Unit No. 2 (Sub) : short-circuit (at shipment)
Unit No. 3 (Sub) : short-circuit (at shipment)
Refrigerant circuit No. 2 to z-1
Unit No. 1 (Main) : open-circuit
Unit No. 2 (Sub) : short-circuit (at shipment)
Refrigerant circuit No. z
Unit No. 1 (Main) : short-circuit (at shipment)
Unit No. 2 (Sub) : short-circuit (at shipment)
Unit 3 setting
(SW5)
Unit
ON
ON
number
setting
(unit 3) 1 2 3
OFF
Unit 3
(Sub)
Inter-outdoor unit
control wiring
1-13
Unit 2 setting
Unit (SW5)
ON
number
ON
setting
(unit 2)
1 2 3 OFF
Unit 2
(Sub)
Inter-outdoor unit control wiring
Unit 2
(Sub)
Inter-outdoor unit control wiring
Test Run
ON
OFF
2-9