6. SYSTEM DESIGN
CHECK RUN EXAMPLES6-3.
EXAMPLE1
When the number of piping is more than the number of wiring.
INDOOR UNIT A      INDOOR UNIT B      INDOOR UNIT C  INDOOR UNIT A      INDOOR UNIT B      INDOOR UNIT C  INDOOR UNIT A      INDOOR UNIT B 
Branch box 1 (Primary)
Indoor 
unit 1
Indoor 
unit 2
Indoor 
unit 3
Indoor 
unit 4
Indoor 
unit 5
Indoor 
unit 6
Indoor 
unit 7
Indoor 
unit 8
Not Connected
Branch box 2 (Secondary) Branch box 3 (Secondary)
[Display (Check run ends)]
 LED961 LED962
LED981
POWER
MODE
LED982
ERROR
Piping Wiring
More 
than
[Coping process]
The terminal INDOOR UNIT B of Branch box 3(Secondary) is connected with the wiring for 
Indoor unit 8. 
EXAMPLE2
When the number of piping is less than the number of wiring.
INDOOR UNIT A      INDOOR UNIT B      INDOOR UNIT C  INDOOR UNIT A      INDOOR UNIT B      INDOOR UNIT C  INDOOR UNIT A      INDOOR UNIT B
Branch box 1 (Primary) Branch box 2 (Secondary) Branch box 3 (Secondary)
Indoor 
unit 1
Indoor 
unit 2
Indoor 
unit 3
Indoor 
unit 4
Indoor 
unit 5
Indoor 
unit 6
Indoor 
unit 7
Indoor 
unit 8
Not Connected
Not Connected
[Display (Check run ends)]
 LED961 LED962
LED981
POWER
MODE
LED982
ERROR
Piping Wiring
Less 
than
[Coping process]
Connect Indoor unit A of Branch box 2(Secondary) with the piping of Indoor unit 4 and Indoor 
unit B of Branch box 3(Secondary) and the piping of Indoor unit 8. 
 : Wiring
 : Piping
- (06 - 99) -
SYSTEM
DESIGN
SYSTEM
DESIGN