LIAF312
800.365.5525
7313 William Barry Blvd., North Syracuse, NY 13212
www.icmcontrols.com
INSTALLATION
INSTALLATION
Softstart
R S
C
OL
L2
L1
T2
Remove the Compressor
Run Winding Wire from T2
of the Contactor and Splice
to the ICM870 Brown Wire
NOTE
(Step 2A)
Compressor
Contactor
Control
Voltage
Line
Voltage
Co
il
T1
Compressor
Black
Blue
Brown
Splice
(Step 2B)
Red
Run
Cap
C
H
Legend:
S = Start
C = Common
H = Hermetic
R = Run
OL = Overload Switch
!
!
WIRING DIAGRAM (GENERAL LAYOUT)
WIRING DIAGRAM (GENERAL LAYOUT)
FOR
RESIDENTIAL A/C
’s
FOR
RV & MARINE A/C
’s
Softstart
R S
C
OL
L2
L1
Compressor
Black
Blue
Brown
Splice
(Step 1B)
Red
Run
Cap
Legend:
S = Start
C = Common
H = Hermetic
R = Run
OL = Overload Switch
C
H
!
NOTE
Remove the Compressor Run Winding Wire from
Common (C) of the Run Capacitor and Splice to the Brown Wire of
the ICM870 Soft Start
!
Step 1A
WHICH MODEL DO I NEED?
ICM870-9A: For AC’s with a Compressor Rated Load Amps (RLA) of up to 9A
ICM870-16A: For AC’s with a Compressor Rated Load Amps (RLA) of 9.1-16A
ICM870-32A: For AC’s with a Compressor Rated Load Amps (RLA) of 16.1-32A
This chart reflects average conversions of Single-Phase Air Conditioning and
Heat Pump Tonnage, BTU’s, HP, and RLA. Please refer to you user manual
or service panel to determine your actual RLA before deciding which model
ICM870 you need.
Air Conditioning & Heat Pump Loads – Average
Size
BTU
RLA
ICM870 Model
1 Ton
12,000
6
9A
2 Ton
24,000
12
16A
3 Ton
36,000
16
16A
4 Ton
48,000
22
32A
5 Ton
60,000
26
32A
6 Ton
72,000
32
32A
Step #1 Connect the (ICM870 RED WIRE)
>
to the run capacitor
terminal (c/common/T2)
Step #2 a) Disconnect factory installed compressor run wire from the
contactor terminal (T2/L2)
b) Splice the (ICM870 BROWN WIRE)
>
to the compressor
run wire previously disconnected in (Step 2A)
If there is a Start Capacitor and or PTCR already in place,
additional steps will be required to disconnect.
Step #3 Connect the (ICM870 BLUE WIRE)
>
to the run capacitor
terminal (herm/hermetic/start)
Step #4 Connect or splice the (ICM870 BLACK WIRE)
>
to the
contactor terminal (T1)
Step #1 a) Disconnect factory installed compressor run wire from the
common run capacitor / L2 terminal
b) Splice the ICM870 BROWN WIRE > to the factory installed
compressor run wire previously disconnected in step #1A.
If there is a Start Capacitor and or PTCR already in place,
additional steps will be required to disconnect them.
Step #2 ICM870 RED WIRE > to the run capacitor (c/common/L2)
terminal
Step #3 Connect the ICM870 BLUE WIRE > to the run capacitor
(herm/hermetic/start) terminal
Step #4 Splice the ICM870 BLACK WIRE > with the factory install
compressor Overload Switch wire (OL/L1)
Special attention should be made with respect to the termination of the field wiring leads. When these leads are terminated at a
terminal, they shall terminate only at a terminal suitable for minimum 90°C wire.