ICM
288
FURNACE CONTROL MODULE
7313 William Barry Blvd.
North Syracuse, NY 13212
ICM CONTROLS
800.365.5525
www.icmcontrols.com
LII362-1
CAUTION!
Failure to turn off gas and electric supplies can result in explosion, fire, personal injury or death.
DANGER!
Only trained personnel should install or service heating equipment. When working with heating equipment, be sure to read and understand
all precautions in the documentation, on labels, and on tags that accompany the equipment. Failure to follow all safety guidelines may
result in damage to equipment, severe personal injury or death.
FAN
120 VAC
TRANSFORMER
TO SECOND ICM288
FOR TWINNING
WIRING DIAGRAM
ELECTRICAL RATINGS
•
Voltage Range:
Line (98 to 132 VAC) @60HZ
•
Ignitor:
5A, 120 VAC
•
Fan blower:
10A, 2 HP, 240 VAC
•
Cool blower:
10A, 2 HP, 240 VAC
•
Heat blower:
5A, ½ HP, 250 VAC
•
Inducer blower:
4A, 120 VAC
•
Gas Valve:
1A, 24 VAC
•
Humidifier motor:
10A, 120 VAC
TIMING
•
Prepurge Heat:
60 seconds
•
Prepurge Cool:
1 second
•
Postpurge Heat:
90-180 seconds
•
Postpurge Cool:
40 seconds
•
Trial for Ignition:
10 seconds
SPECIFICATIONS
P1
1 – N/C
2 – 24 VAC Common
3 – Limit switch
4 – Gas valve
5 – Pressure switch OUT
6 – Pressure switch IN
7 – Flame sensor
8 – Limit switch IN
9 – 24 VAC Common
P2
1 – HSI
2 – N/C
3 – 120 VAC Neutral
4 – Inducer
5 – N/C
6 – 120 VAC Neutral
PIN CONNECTIONS
FAN
120 VAC
TRANSFORMER
TO SECOND ICM288
FOR TWINNING
FAN
120 VAC
TRANSFORMER
TO SECOND ICM288
FOR TWINNING
The HEAT speed air blower off time delay is selectable for 90 seconds, 120 seconds, 160
seconds or 180 seconds using top two positions of SW1.
The COOL speed air blower off time is fixed for 40 seconds.
The G (Fan) mode, the Fan blower off time is fixed for 1 second.
BLOWER TIMING
OFF Time
SWITCH 1
SWITCH 2
90
OFF
ON
120
OFF
OFF
160
ON
OFF
180
ON
ON
DIP SWITCH SETTINGS
•
SW1 SWITCHES 1 & 2
SW1 Switch 3:
Single or TWIN systems
SW1 Switch 4:
Select 1st or 2nd stage
•
SW1 SWITCHES 3 & 4
1. Disconnect all power to the furnace. Do not touch the control or the wiring
prior to discharging your body’s electrostatic charge to ground.
2. To ground yourself, touch your hand and tools to a clean, metal (unpainted)
furnace surface near the control board.
3. Service the furnace after touching the chassis. Your body will recharge with
static electricity as you shuffle your feet or move around, and you must
reground yourself.
4. Reground yourself if you touch ungrounded items.
5. Before handling a new control, reground yourself; this will protect the
control. Store used and new controls in separate containers before
touching ungrounded objects.
6. ESD damage can also be prevented by using an ESD service kit.
ESD PREPARATION
Carefully remove all wiring from the OEM board and remove OEM Board from
furnace.
Install the ICM 288 board and reinstall wires as per original installation.
IMPORTANT:
There are some Furnace models which performed flame
sense differently. Please read the information below before
testing the furnace!
1.
Units without a separate flame sensor
will require purchase of a Rheem
Flame sensor Kit to be wired to pin 7 of the 9 pin harness of the furnace.
2.
Units with a separate flame sensor which is NOT routed through the
9 pin harness
will require removal of flame sensor wire from existing
connection and rewiring it to pin 7 of the 9 pin harness of the furnace.
3. Units which have a separate flame sensor routed to pin 7 of the 9 pin
harness do not require rework.
INSTALLATION
