Johnson Controls HVWHP072B32S - Page 23

SM-18006
3-3
TROUBLESHOOTING
Example for Electrical Wiring Connection
Figure 3.2 Layout for Electrical Wiring Connection (
Heat Recovery System)
Figure 3.1 Layout for Electrical Wiring Connection (
Heat Pump System)
TB1
Main Switch
Main Switch
TB1 TB2
1 2 3 4
1 2 A B
TB2
1 2 A B
TB2
TB1
No. 0
Indoor Unit
No. 1
Indoor Unit
Distribution Box or Pull Box Distribution Box or Pull Box
GFCI
GFCI
GFCI
GFCI
S
S
Water Source Unit A (Main)
Ground
Controller
Cable
Controller
Cable
Wired
Controller
Wired
Controller
No. 0 Indoor Unit Group
1
208/230V 60Hz
TB : Terminal Block
PCB : Printed Circuit Board
: Field Wiring
: Communication Line
DC5V (Non-Pole Communication H-LINK System)
: Optional Part (Field Supplied)
: Optional Accessory
3
208/230V 60Hz
460V 60Hz
L1 L2 L3
L1 L2L1 L2
TB1
Main Switch
Main Switch
TB1 TB2
L1 L2 L3 1234
12AB
TB2
12AB
TB2
TB1
L1 L2 NL1L2N L1 L2 NL1L2N L1 L2 N
No. 0
Indoor Unit
No. 1
Indoor Unit
Distribution Box or Pull Box Distribution Box or Pull Box Distribution Box or Pull Box Distribution Box or Pull Box
Water Source Unit
Ground
Controller
Cable
TB1
12AB
TB2
No. 2
Indoor Unit
TB1
12AB
TB2
No. 3
Indoor Unit
TB1
12AB
TB2
No. 4
Indoor Unit
Wired
Controller
Controller
Cable
Wired
Controller
Controller
Cable
Wired
Controller
Controller
Cable
Wired
Controller
Controller
Cable
Wired
Controller
Indoor Unit Group For Cooling Operation Only
1234
Change-Over Box 1
TB2TB1
1234
Change-Over Box 2
TB2TB1
1234
Change-Over Box 3
TB2TB1
1
208/230V 60Hz
TB : Terminal Block
PCB : Printed Circuit Board
: Field Wiring
: Communication Line
DC5V (Non-Pole Communication H-LINK System)
: Field-Supplied
: Optional Accessory
S
S
3
208/230V 60Hz
460V 60Hz
GFCI
GFCI
GFCI
GFCI
L
1
R
L
2
S
L
1
R
L
2
S
L
1
R
L
2
S