Product Overview
ICM2910 SERIES
IGNITION CONTROL MODULES
LIS274
When the thermostat initiates a “Call for Heat”, the ICM2910 will perform a hardware check. After the hardware check,
the ICM2910 will start a pre-purge where applicable. Once the pre-purge has ended, the spark source and the gas valve
relay are energized simultaneously for the duration of the trial for ignition period. A ame rectication circuit conrms the
presence of the ame. Upon ame detection, the spark source is turned off. If ame is not sensed, the control will turn
off the spark source and gas valve and start an inter-purge where applicable before the next trial for ignition. If ame is
not detected after the trial(s) for ignition, the control will enter a hard lockout. To clear the hard lockout, remove the input
voltage to the control or recycle the thermostat’s heat call.
Mode of Operation
Wiring Diagram
Burner
SPARK
Burner Ground
Remote
Flame Sense
7
6
5
4
3
2
1
Gas
Valve
Burner
Spark
Burner Ground
7
6
5
4
3
2
1
L2
120 VAC
Thermostat
L1
Gas
Valve
1 Burner ground
2 Gas valve hot
3 L2 (neutral)
4 L1 (120 VAC hot)
5 N/A
6 Gas valve neutral
7 Remote flame sense
Pin # and Description
L2
120 VAC
Thermostat
L1
• Control Voltage: 102-138 VAC
• Flame Current: 1uA minimum
• Current Draw: 50mA maximum
• Gas Valve: 1.5A@120 VAC
• Flame Failure Response Time:
0.8 seconds maximum
• Operating temperature:
-40˚F to 175˚F (-40˚C to 80˚C)
• Dimensions:
5.23”L x 2.53”W x 1.86”H
• Mounting: Surface mount using
(2) #8 screws
Ordering Information
ICM P/N
Replaces
Fenwal P/N
# Ignition
Trials
Pre-Purge
Time
Inter-Purge
Time
Trial for
Ignition Time
ICM2910-200-005 35-725200-005 1 None None 10s
ICM2910-201-007 35-725201-007 1 None None 15s
ICM2910-201-501 35-725201-501 1 5s None 4s
ICM2910-201-505 35-725201-505 1 5s None 10s
ICM2910-205-015 35-725205-015 3 None 15s 10s
ICM2910-205-017 35-725205-017 3 None 15s 15s
ICM2910-205-021 35-725205-021 3 None 25s 4s
ICM2910-205-115 35-725205-115 3 15s 15s 10s
ICM2910-205-521 35-725205-521 3 5s 25s 4s
ICM2910-206-515 35-725206-515 3 5s 15s 10s
ICM2910-405-013* 35-725405-013 3 None 15s 7s
Specifications
* Open board design
Features
• Direct Spark Ignition (DSI) control modules
• Microprocessor-based
• Controls spark ignitor and gas valve
• Monitors timing, trial for ignition, flame sensing
and lockout
• Compatible with LP or natural gas
• Redundant Gas valve design conforms to ANSI Z21.20
• Conforms to UL STDs 60730-1 and 60730-2-5.
• Certified to CSA STD E60730-1 and CSA STD C22.2#60730-2-5