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Operation
The ICM Interrupted Ignition Oil Primary Control is a microprocessor-based control. The
indicator light provides diagnostic information for lockout, recycling and patented cad
cell status. There is a manual reset button to exit the lockout mode and enter the idle
mode (See Fig. 1, Page 1). Operation is as follows:
External Action
Oil Primary Control Action:
Power applied to
control
Internal safety check conducted. If no light or flame is detected and all
internal conditions are correct, control enters Idle Mode.
Thermostat calls
for heat
(continued on
next page)
1. Shorts across T-T terminals (on a call for heat) in warm air system and/or
provides power to limit terminals in hydronic system. Networked systems
may receive a call for heat on network connections 1, 2, 3.
2. Safety Period (5 seconds) internal and external check for flame or light. If
flame or light is detected, control remains in the Idle Mode.
3. When flame or light is not present:
a. ICM1514* (if valve-on delay is enabled) will apply power to the burner
motor and ignitor.
b. ICM1511*, ICM1512*, ICM1513* (if valve-on delay is enabled) will apply
power to the burner motor and ignitor, enter/complete valve-on delay
period and then apply power to the valve.
4. Control enters Trial for Ignition period.
a. Monitors burner for flame.
b. When flame is not detected:
(1) Enters lockout mode (after lockout time of 15, 30, or 45 seconds).
(2) Shuts off valve, ignitor and burner motor.
(3) Flashes indicator light at 1/2 second on, 1/2 second off.
(4) Depress reset button to return to power-up sequence.
c. When flame is detected, Carry-Over period begins:
Содержание ICM1511 Series
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