Product Overview

6. In the even of a flame failure during a firing period, the main fuel valve is de-energized and the

spark ignition re-energized. A 10 sec. relight trial for ignition is initiated (PTFI LED lit). If

flame is detected (Flame LED lit) during the trial for ignition period, the main fuel valve is re-

energized and the spark ignition de-energized. If flame is not detected during the trial for igni-

tion period, the pilot gas valve and spark ignition are de-energized. A safety lockout occurs

which de-energizes the burner motor and energizes the lockout alarm circuit (Alarm LED lit)

approximately 30 seconds after the safety lockout occurs.

7. Manual reset is required following any safety lockout.

NOTE: Wait 10 seconds after lockout before resetting the control.

Direct Spark Ignited Burners

The typical wiring arrangement illustrated on pages 26 (MC120, MC230 or 29 (MC120P) for direct

spark ignited burners provides the following function:

1. With power applied, and the limit-operating control circuit closed (Operating Control LED

lit), the burner motor circuit is energized. The air flow switch circuit closes (Air Flow LED lit).

2. Following a short-time delay (4-6 sec.) KL-1 closes, energizing Terminal 3 which powers the

primary main fuel valve and Terminal 4 which powers the spark ignition. A ten sec. trial for

ignition is initiated (PTFI LED lit).

3. When main flame is detected (Flame LED lit), KF-1 closes, energizing Terminal 5 which pow-

ers the secondary main fuel valve (if used), KF-2 opens de-energizing Terminal 4 which shuts

off the spark ignition.

4. When the operating control opens or if a power failure occurs, the control is de-energized.

Power interruptions in the millisecond range do not affect the operation of the control. Power

interruptions of longer duration will cause the control to recycle.

NOTE: Controls with UV amplifiers (MAUV1 and MAUV1T) are always powered via Terminal #1.

5. In the event that main flame is not detected by the end of the trial for ignition period, the pri-

mary main fuel valve and the spark ignition are de-energized. A safety lockout occurs which de-

energizes the burner motor and energizes the lockout alarm circuit (Alarm LED lit) approxi-

mately 30 seconds after the safety lockout occurs.

6. In the event of a flame failure during a firing period, the secondary main fuel valve (if used) is

de-energized and the spark ignition is re-energized. A 10 sec. re-light trial for ignition is initi-

ated (PTFI LED lit). If flame is detected (Flame LED lit), the secondary main fuel valve (if

used) is re-energized and the spark ignition de-energized. If flame is not detected during the trial

for ignition period, the primary main fuel valve and the spark ignition are de-energized. A safety

lockout occurs, which de-energizes the burner motor and energizes the lockout alarm circuit

(Alarm LED lit) approximately 30 seconds after the safety lockout occurs.

7. Manual reset is required following and safety lockout.

NOTE: Wait 10 seconds after lockout before resetting the control.

Standing Pilot Burners

When using an MP100 or MP100E with an MARTI or MARTIT amplifier to control a burner having

a standing pilot, clip out the red wire loop close to the edge of the circuit board. This eliminates pilot

proving when the main burner is off and requires pilot flame proving during the subsequent start-up.