Garland MCO-GD-10M Chain Programming, Second Stage Main Burner Operation, Safety Lockout Time

	Entry		Exit
UPO - User Preference Offset. Used by the user to adjust the controlling temperature +/- 50º in 1º
increments.
1.	Set the time digits to 00:00.	1.	Depress the
2.	Set the temperature digits to X10º.		Actual Temp
3.	Depress & hold the Start button for five seconds.		button to lock-in.
4.	“UPO” & Current UPO will be displayed. Turn TEMP or TIME dial to adjust.
TO CHANGE FAHRENHEIT TO CELSIUS (and vise versa)
1.	Set the time digits to 00:00.	1.	Depress the
2.	Set the temperature digits to X20º.		Actual Temp
3.	Depress & hold the Start button for five seconds.		button to lock-in.
4.	Rotate either dial to display FFF or CCC in the temperature display
TIMER RESOLUTION CHANGING
1.	Set the time digits to 00:00.	1.	Depress the
2.	Set the cook temp to X30º		Actual Temp
3.	Depress & hold the Start button for five seconds.		button to lock-in.
4.	Rotate either dial to display “HR” or “MN”.
CHANGE THE HERTZ
1.	Set the time digits to 00:00.	1.	Depress the
2.	Set the cook temp to X40º		Cancel button to
3.	Depress & hold the Start button for five seconds.		lock-in.
4.	Rotate either dial to display “50” or “60” Hz.
CHAIN PROGRAMMING
1.	Press Pgm Mode on/off.	1.	Press Pgm
2.	Select Pgm # (1-5).		Mode on/off to
3.	Enter Event 1 parameters (time, temp, fan speed etc.). Press Event # key to		exit program
	chain 2nd event.		mode.
4.	Enter Event 2 parameters.
5.	Continue procedure up to six events.

ELECTRONIC PILOT & MAIN BURNER IGNITION SEQUENCE

FIRST STAGE - TRIAL FOR PILOT IGNITION

On every call for heat (system start), the S86 performs an internal safe-start check shows that a flame-simulating condition is present. During a normal start, the S86 opens the pilot valve in the gas control. This allows gas to flow to the pilot burner. Simultaneously, the electronic spark generator in the S86 produces a 15,000 volt spark pulse output. This voltage produces a spark at the pilot burner ignitor/sensor rod, igniting the gas flowing around the electrode. If the pilot flame is not detected during the trial for pilot ignition, the S86H contains a safety lockout timer (90 Seconds) to limit the trial for pilot ignition period.

SECOND STAGE - MAIN BURNER OPERATION

When the pilot flame is established, a flame rectification circuit is completed to the burner ground. The S86 flame sensing circuit detects the flame current and shuts the spark generator off. At the same time, the second operator (main gas valve) is opened in the gas control, allowing gas flow to the main burners. The pilot flame ignites the main burner conventionally.

SAFETY LOCKOUT TIME

12