6
Control Wiring
All wiring should conform to the National Electric Code and local regulations.
NOTE: Use copper conductors only!
• Electrical leads should not be taut; allow slack for temperature change and vibration.
• The manufacturer suggests removal of the electronic controller prior to mounting the metal case to
a wall or any flat surface to facilitate installation and the installation of conduit fittings and conduit installation.
Terminal Detail: 9045
Representative Wiring Installation Procedure Model 9145
Connecting the refrigeration / defrost equipment (See Figures 5 and 6�)
NOTE: Rated input power 120/208-240V AC 50/60 Hz (+10,-15%)
1. Turn off the AC power.
2. Open the metal case to access the control connectors.
3. Connect the wires from the compressor to terminals A or E.
4. Connect the defrost device (heater or hot gas solenoid) to terminal B.
5. Connect the wire from L1 - 120V AC or 208-240V AC line - to terminal C.
6. Jumper terminal C to terminal D.
7. Connect the wire from L2/N to terminal F.
8. Connect the fan wires to terminals A or E.
9. If a defrost termination switch is present, connect its wire to terminal G.
Control Wiring Model 9145
Terminal
A
B
C
D
E
F
G
Relay
Contact
SPST #1
NC Contact
SPST #1
COMM
Contact
L1
Power in
to timer
SPST #2
NO Contact
SPST #2
COMM Contact
L2/N
Power in
to timer
No
Connection
Relay Rating
30A resistive @ 120V AC
to 240V AC
1HP @ 120V AC,
2HP @ 208V AC to 240V
AC
30A resistive @ 120V AC
to 240V AC
1HP @ 120V AC,
2HP @ 208V AC to 240V
AC
Device
Connections
Compressor (Typical)
Defrost Device (Typical)
A B C D E F G
Fig. 5 Load / AC Input Connectors
Terminal Block Model 9145
Fig. 6 Model 9145
