19
For the MEP560 and MEP562, after pilot flame is detected, the control enters an 8 second pilot stabi-
lization period with Terminal 3 and Terminal 4 energized. At the expiration of the stabilization
period, Terminal 5 is energized.
Pilot Stabilization timing begins as soon as flame is proven.
Selectable Recycle/Non-Recycle operation on loss of flame after Terminal 5 is energized.
Selectable air flow (interlock circuit) proven at start.
Recycle on loss of air flow (interlock circuit) after flame is proven.
Selectable purge times are 7, 10, 15 and 30 seconds.
10 second timing begins 3 seconds after flame is proven.
Selectable Recycle/Non-Recycle operation on loss of flame after Terminal 5 is energized.
Selectable air flow (interlock circuit) proven at start.
Lockout on loss of air flow (interlock circuit) after flame is proven.
TYPE MEP560
PROGRAMMING SEQUENCE
L1/7
PURGE
COMPLETE
FIRING
L1/7
SELECTABLE PTFI
5 OR10 SEC
SELECTABLE
PURGE
8
T
E
R
M
I
N
A
L
3
4
5
SELECTABLE
POST PURGE
STABLIZATION PERIOD
8 SEC
MTFI
10 SEC
INTERLOCK
AIR FLOW
PROVEN
TYPE MEP561
PROGRAMMING SEQUENCE
L1/7
ON
PURGE
COMPLETE
FIRING
PERIOD
L1/7
OFF
SELECTABLE PTFI
5 OR10 SEC
SELECTABLE
PURGE
7, 10, 15, 30 Seconds
8
T
E
R
M
I
N
A
L
S
3
4
5
SELECTABLE
POST PURGE
MTFI
10 SEC
INTERLOCK
AIR FLOW
PROVEN
