System information

3

ORDERING INFORMATION
Note: EP160, EP161, EP163, EP165, EP166, EP170 and EP174 have non-recycle running interlock
circuits (3/P).
WARNING: While all controls are mechanically interchangeable because they mate with a
common wiring base, you must select the correct model for your application. Inappropriate
application of a control could result in an unsafe condition hazardous to life and property.
TIMING CHARTS
* Purge timings are adjustable.
PART NUMBER PURGE
1
IGNITION TIMING
PTFI MTFI FFRT
2
EP160
30 Sec.
1
Term 5 10 Sec. 10 Sec.
4 Sec.
Term 6 10 Sec. 15 Sec.
EP161
30 Sec.
1
Term 5 10 Sec. 10 Sec.
4 Sec.
Term 6 10 Sec. 30 Sec.
EP163
40 Sec.
5
Term 5 5 Sec.
5
5 Sec.
5
4 Sec.
Term 6 5 Sec.
5
5 Sec.
5
EP165
4
30 Sec.
1
Term 5 10 Sec. —
2 Sec.
Term 6 10 Sec. 10 Sec.
3
EP166
4
30 Sec.
1
Term 5 10 Sec. —
2 Sec.
Term 6 10 Sec. 15 Sec.
3
EP170
EP174
6
30 Sec.
1
Term 5 5 Sec. —
4 Sec.
Term 6 10 Sec. 10 Sec.
1
Purge timings are adjustable. See “Dipswitches — Purge Timing.”
2
FFRT is the Flame Failure Response Time.
3
During MTFI, terminal 6 is energized for 5 seconds (pilot stabilization) before energizing terminal 7 for 10 sec-
onds
(EP165) or 15 seconds (EP166).
4
EP 165 and EP166 will lockout in the event of a power interruption.
5
EP163 purge and ignition timings are programmable via ED510.
6
M-D Low Fire start is proven closed during PTFI and MTFI.
TYPE EP160
NON-RECYCLE RUNNING INTERLOCKS (3/P) PURGE TIME - 30 SEC.*
FLAME FAILURE RESPONSE TIME 4 SEC.
PROGRAMMING SEQUENCE
L1/13
ON
LFS
CLOSED
(MD)
FIRING
PERIOD
L1/13
OFF
MTFI
10 SEC
PTFI
10 SEC
MTFI
15 SEC
PURGE
30 SEC
M
T
E
R
M
I
N
A
L
S
5
6
7
POST PURGE
15 SEC
MIN
30 SEC
HIGH (10-X) LOW (10-12) AUTO (10-11) LOW (10-12)
(MODULATOR MOTOR CIRCUIT)
HFS
CLOSED
(D8)
DIPSWITCH SETTINGS
123456
INACTIVE Down Down Down Down