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463+6%11-2+8,))4463+6%11)613(90)
The EP177 Programmer Module provides early spark termination for the spark ignition that is con-
nected to terminal 5. The EP177 also waits indefinitely for the M-D low fire start switch to close.
This programmer model also provides a number of operational characteristics that are selected via
the ED510 Keypad/Display rather than by dipswitch selection.
When in a modifiable selection, the RESET key is used to enter the modify mode, the SCRL key is
used to modify the value and the RESET key is used to save the value.
The following is a list of the programmable functions associated with the EP177 Programmer
Module:
— Selectable purge (selectable from 30 seconds to 37 minutes – default setting is 30 seconds).
— Prove the operation of the 3-P Running Interlock Circuit at start.
— Terminal 6 operation - Interrupted / Intermittent operation of pilot valve – default is inter-
rupted.
— Prove the operation of the High Fire Purge Interlock (D-8).
— Prove the operation of the Low Fire Start Interlock (M-D).
— Purge Count method, UP or DOWN – default is down.
— Selectable Post Purge Timing of 1, 15, 30, 45 or 60 seconds – default is 15 seconds.
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1.
Insert the EP177 programmer module into the EB700 chassis and connect the ED510 Keypad/
Display.
2.
Open the operating control (L1-13) circuit. The EP177 cannot be modified unless the operating
control is open.
3.
The PROGRAM SETUP sub-menu will be used to display the programmable functions. Press
the SCRL key until the PROGRAM SETUP sub-menu is displayed.
4.
Press the MODE key to enter the PROGRAM SETUP sub-menu. The SCRL key will advance
through the selections in the sub-menu. The first four items displayed in the sub-menu are PRO-
GRAMMER TYPE EP177, ENGR CODE, AMPLIFIER TYPE, and FFRT TIME 4 S. These
items are not programmable.
5.
Press the SCRL key and the next item displayed (and first programmable item) is PURGE
TIME followed by the current setting (default setting = 30 seconds).
6.
Press and hold the RESET button for 1 second to enter the “Modify” mode (providing the con-
trol was not in a lockout condition). After a 2-3 second delay, the control will display SCRL TO
MODIFY on the top line of the display (replacing STANDBY).
7.
Press the SCRL key to advance through the allowable selections. The selections will roll over
from the last selection to the first one.
8.
Press and hold the RESET button for one second to choose and store in memory the appropriate
selection.
9.
The SCRL key will advance through the following selections. Follow steps 1 through 8 to mod-
ify the selections.
The program sequence timings of the EP177 are the same as the EP170 programmer.
The EP177 provides the following adjustments made via the ED510 keypad.
PURGE TIME
30s, 1m, 3m, 5m, 7m, 9m, 10m, 12m, 15m, 16m, 18m, 20m, 22m, 25m,
27m, 30m, 32m, 35m, 37m.
default is 30s
Pre-purge time begins after the open damper proving switch (8) is detected closed.
PROVE 3-P OPEN Y/N
default is N
The non-recycling interlocks wired between terminals 3 and P must be open at the start of a cycle.
TERMINAL 6 = INTRP/INTMT
default is INTRP (interrupted)
