7313 William Barry Blvd.
North Syracuse, NY 13212
ICM CONTROLS 800.365.5525
www.icmcontrols.com LII375
ICM712
Replaces: IEC E025-71521506
ELECTRONICALLY COMMUTATED MOTOR CONTROL
The ICM712 is a motor speed controlling
interface for use with a low voltage
thermostat or automated control unit to
control the ECM’s output.
MODE OF OPERATION
• 24 VAC Thermostat Inputs:
O, MED, HIGH, Y1 and LOW
• PWM input: BK/PWM
• Electrical Rating: 24 VAC (18-30 VAC)
SPECIFICATIONS
The ECM’s speeds can be configured for
either of the following output signals.
ANo Signal
BHalf Wave (+)
CHalf Wave (–)
DFull Wave
ECM SPEED CONFIGURATIONS
1. Return Valve
2. Humidistat (BK)
3. Heat Tap Select
4. 24 VAC (R)
5. 2nd Stage Heat (EM/W2)
6. 2nd Stage Cool (Y/Y2)
7. Fan (G)
8. Output (+)
9. Common (C1)
10. W/W1
11. Common (C2)
12. Delay Tap Select
13. Cool Tap Select
14. Y1
15. Adjust Tap Select
16. Output (-)
PIN CONNECTIONS
A
B
C
D
MED
A
B
C
D
LOW
A
B
C
D
HIGH
1
+
–
1
MED HIGH Y1 LOW
J1
BK/
PWM
24 VAC
COM
OUT
Cool Tap
Select
Select
Select
Heat Tap
Select
Motor
Feedback
Indicator
EM
W2
W1O Y2GY1
RThermostat
Automated
Control
Unit
PWM
C
R
24
VAC
To ECM
O
WIRING DIAGRAM