Johnson Controls (H, Engineering Manual

Page: 82 / 124

OUTDOOR UNITS
2-60
TC-16006
2.15 Electrical Wiring
2.15.1 Electrical Wiring Connection
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(1) Power Source Wiring
Supply the power sources to each outdoor unit and indoor unit group respectively.
Using this method is a basic principle of power supply wiring.
Indoor
Unit
Indoor
Unit
Outdoor
Unit
A
Outdoor
Unit
B
Outdoor Unit Power Source
AC 3~ 208/230V 60Hz
AC 3~ 460V 60Hz
1
2
1
2
1
3
3 3
4
6
5 5
6
5
7
8 8
7 7 7
4
5
4
Indoor Unit Side
S
GFCI
Indoor Unit
Power Source
AC 1~ 208/230V 60Hz
Pull Box Pull Box
GFCI (Ground Fault Circuit Interrupter)
S (Main Switch and Fuse) 2
Power Supply Wiring (O.U.)
Ground Wiring (O.U.)
Communication Cable (O.U. ~ I.U.)
Communication Cable (O.U. ~ O.U.)
8
Power Supply Wiring (I.U.)
Ground Wiring (I.U.)
S S
GFCI
Outdoor
Unit
C
1
2
3
6
4
S
GFCI GFCI