7
®
DIPSWITCH #1 - NON-RECYCLE OR RECYCLE OPERATION:
Dipswitch #1 determines if the control will lockout (dipswitch 1 is Down) or recycle (dipswitch 1 is
Up) when the running interlock circuit (3-P) is opened during the firing cycle or
following a flame
failure
after the control has released to modulation (following completion of MTFI).
*
The program-
mer is shipped with the switch down (non-recycle operation). See below for an overview of all
dipswitch settings.
DIPSWITCH #2 - INTERRUPTED OR INTERMITTENT OPERATION:
Dipswitch #2 selects either interrupted or intermittent operation of terminal 5. When terminal 5 is
selected for interrupted operation (Dipswitch #2 is Down), terminal 5 is energized during pilot igni-
tion (5 seconds), pilot proving (10 seconds), and MTFI (3 seconds)) before de-energizing. When ter-
minal 5 is selected for intermittent operation (Dipswitch #2 is Up), terminal 5 remains energized
throughout the firing period. The programmer is shipped with the switch down (interrupted opera-
tion). See above for an overview of all Dipswitch settings.
DIPSWITCHES #3, 4, & 5 - PURGE TIMING
Dipswitches #3, 4, & 5 determine the purge timing for the programmer module. Purge timings are
selectable from 1 second to 15 minutes. The purge timing is not initiated until the firing rate motor is
driven to the high fire position (10-13 made) and the high fire switch is proven closed (term D-8). At
the end of the purge timing, the firing rate motor is driven to the low fire position (10-12), and waits
until the low fire start interlock is proven closed (M-D). Refer to the table on dipswitch functions to
select the various purge timing.
DIPSWITCH #6 - 3-P RUNNING INTERLOCK CIRCUIT PROVEN OPEN TO START
Dipswitch #6 enables or disables the option that requires the 3-P running interlock circuit to be
proven open at the start of the operating cycle. If this option is enabled (Dipswitch #6 is Down), the
3-P running interlock circuit is required to be open at the start of the operating cycle (L1- 3 circuit
closed). If this option is enabled and the 3-P circuit is closed at the start of the operating cycle, the
control will hold for 30 seconds waiting for the 3-P circuit to open. If after 30 seconds, the 3-P cir-
*
The control will always initiate a safety lockout if the control fails to prove the presence of flame during PTFI or MTFI.
DIPSWITCH #1 IS PERMANENTLY DISABLED IN THE EP113NR
DIPSWITCH POSITION
U = UP
DN = DOWN
TERM
PTFI
MTFI
X
5
—
SEE DIPSWITCH #2
5
15
3
6
15
3
15
2
3
4
5
6
Dn
Non Recycle on 3-P Open or Flame Fail
Recycle on 3-P Open or Flame Fail
Up
Dn
Up
Interrupted
Intermittent
TERMIINAL 5
Dn
Dn
Dn
30 SEC.
Dn
Dn
Up
1 SEC.
SELECTABLE HIGH FIRE
PURGE TIMING
LOW FIRE START
TIMING = 10 SEC. (MIN.)
Dn
Up
Dn
15 SEC.
Dn
Up
Up
60 SEC.
Up
Dn
Dn
2 MIN.
Up
Dn
Up
5 MIN.
Up
Up
Dn
10 MIN.
Up
Up
Up
15 MIN.
Dn
Prove 3-P Open at start
ENABLED
Up
Prove 3-P Open at start
DISABLED
