Product Overview

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11. Action on main flame fail
- User selectable Recycle or Non-Recycle operation
- Recycle once if main flame on greater than 30 seconds else lockout
12. Main Valve proof of closure input: Terminal 7 - active only after Terminal 6 active
13. Operating limit input: Terminal 6
14. Post purge time after operating limit open with flame present: 15 seconds
15. Post purge time after flame fail during PTFI, STABILIZATION, and MTFI period: 10 seconds
16. Reset from lockout achievable from local reset push button or line power.
17. LED will be illuminated as long as power applied to Terminal 1.
FIGURE 1.
MEP437 Programmer Dip Switch Configuration
Note: C refers to switch closed position, closed position is when the switch is toward the printed
circuit board. O refers to switch open position or when the switch is moved away from the printed
circuit board. Indicating arrow on top of programmer cover points toward closed position.
Once the switches are set, they become permanently stored after 8 hours of continuous operation or
they can be manually set through the use of the optional ED510 display.
SWITCH FUNCTION RESULT
654321
CCC
PURGE
TIME
SELECTION
(seconds)
0
CCO 5
COC 15
COO 30
OCC 60
OCO 90
OOC 120
OOO 240
C PTFI
TIME
(seconds)
5
O10
CPILOT
OPERATION
INTRPT
OINTMT
CFLAME
FAIL
RECYCLE
O NON-RECYCLE
LED INDICATORS
(shown in closed or OFF position)
DIP SWITCHES