Install Instructions

LIAF268
7313 William Barry Blvd., North Syracuse, NY 13212
(Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276
www.icmcontrols.com
Wiring Diagram
Legend:
Low voltage (24 VAC)
High voltage (120 VAC)
N.C. = Normally closed switch
N.O. = Normally open switch
Compressor
Contactor
24
VAC
LIM
IN
24
COM
LIM
OUT
RO
IN
RO
OUT
PS
IN
PS
OUT
MV
LO
MV
HI
FS GND
Gas Valve
EAC-HCOOL-H
PARK PARK LINE-H
XFMR-H HUM-H
24
VAC
120 VAC
120 VAC
Neutral
120 VAC
Hot
Electronic
Air Cleaner
Circulator
Blower
Humidifier
Limit
Switches
(N.C.)
Rollout
Switches
(N.C.)
Flame
Sensor
Probe
Inducer
211 10 12 876 5 43 1
NOC
Gas
Valve
Common
9
HI HEAT-H
LO HEAT-H
Ignitor
LINE NEUTRALS
HUM-H
XFMR-HEAC-H
FS
LINE-HPARKPARK
100 sec
2 STG 1 STG
150 sec
LED1
RECALL
FAULT
12-Pin Connections
1 = Limit switch Out
2 = Low gas valve
3 = 24 VAC hot (R)
4 = Pressure switch Out
5 = Rollout switch Out
6 = 24 VAC common (C)
7 = Limit switch In
8 = Earth ground
9 = Gas valve common
10 = Pressure switch In
11 = Rollout switch In
12 = High gas valve
4-Pin Connections
1 = Inducer blower
2 = Hot Surface Ignitor (HSI)
3 = Inducer blower neutral
4 = Hot Surface Ignitor (HSI) neutral
Pressure
Switches
(N.O.)
Note 1: For American Standard/Trane, York PCLU and York P3UR furnaces: Install the black wire labeled “10” from pin 5 to pin 11 of the
12-pin harness which is connected to the furnace.
Note 2: There are some Rheem/RUUD furnace models which performed ame sense differently. Please read the information below before
testing the furnace!
1. Rheem/RUUD furnaces without a separate ame sensor will require the purchase of a Rheem ame sensor kit (62-24044-71) to be wired to
pin 7 of the 9-pin harness which is connected to the furnace.
2. Rheem/RUUD furnaces with a separate ame sensor which is NOT routed through the 9-pin harness will require removal of the ame
sensor wire from the existing connection and rewiring it to pin 7 of the 9-pin harness which is connected to the furnace.
3. Rheem/RUUD furnaces which have a separate ame sensor already routed to pin 7 of the 9-pin harness will not require this modication.
Connect the other end of the furnace harness into the ICM2812 harness labeled “2”, connect the other end of this harness to the ICM2812
circuit board and connect the orange wire to the “FS” (ame sensor) terminal.