OM-224 789 Page 15
4-3. Changing Pre-Flow, Post-Flow, And Burnback Times
Ref. 804 231-A
Remove right side cover.
1
Timer Board Dip Switch
2
Timer Board Pots
.
Timer DIP switch is shown with
factory settings.
Setting Timer Board DIP Switch
Position 1
On position enables the Burnback
timer.
Position 2
On position allows Burnback to be
set using rear panel control.
Position 3
Sets maximum Postflow time.
Off position = 5 seconds. On posi-
tion = 15 seconds.
Position 4
On position allows Postflow to be
set using rear panel control.
Position 5
Sets maximum Preflow time.
Off position = 5 seconds. On posi-
tion = 15 seconds.
Position 6
On position allows Preflow to be set
using rear panel control.
Setting Timer Board Pots
Adjust trim pot R1 to set maximum
Preflow time.
Adjust trim pot R2 to set maximum
Postflow time.
Adjust trim pot R3 to set maximum
Burnback time.
Reinstall cover.
Tools Needed:
1
2
R1
R2
R3
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