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No.1 System Indoor Units
(or Water Modules)
Remote
Controller
ELB
Main Switch
Main Switch
Remote
Controller
No.0 Unit
TB2
(Shielded
Twist Pair
Cable)
No.1 Unit
Distribution Box
Fuse
ELB
Fuse
TB1
208/230V
3~ 60Hz
Outdoor Unit A (Main)
TB1
TB2
L1 L2 L3 1 2 3 4
Outdoor Unit B (Sub)
TB1 TB2
1234L1 L2 L3
12AB 12AB
TB2
TB1
ELB
ELB
ELB
Earth
Earth
ELB
Main Switch
Fuse
Distribution Box
Remote
Controller
(Shielded
Twist Pair
Cable)
Remote
Controller
No. 0 System Indoor Units (or Water Modules)
208/230V
3~ 60Hz
< Heat Pump System & Heat Recovery System Without Switch Box >
< Heat Recovery System with Switch Box>
For Single Branch SW BOX
Heat Recovery Indoor Units
(or Water Modules)
Cooling Only
Indoor Units
23
Heating Only
Water Modules
Heat Recovery Indoor Units
Connected to the same branch
208/230V
3~ 60Hz
208/230V
3~ 60Hz
208/230V
1~ 60Hz
208/230V
1~60Hz
L1
L2
L1 L2
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