System information

5

DIPSWITCHES FOR SELECTABLE OPERATION
Several operational characteristics of the EP160, EP161, EP165, EP166, EP170 and EP174 program-
mer modules are determined by six (6) dipswitches located on the side of the programmer. These
characteristics include purge timing (dipswitches 3, 4, 5) and the option requiring the 3-P running
interlock circuit to be proven open at the start of the operating cycle, and that the D-8 (Purge Inter-
lock) and M-D (low fire start interlock) switches open and close at the appropriate times (dipswitch
6). Dipswitch 2 is inactive. (Refer to later sections in this bulletin describing the EP163 program-
mer).
In programmer models with engineering code 39 and above, for a PPC5000 to recognize a new
cycle, dipswitch 1 now invokes a 3 second delay after the operating switch closes to when the blower
motor, terminal M, becomes powered. On a quick recycle, this will all force terminal M to become
de-energized for 3 seconds.
WARNING: THE INAPPROPRIATE SELECTION OR APPLICATION OF A PROGRAM-
MER MODULE COULD RESULT IN AN UNSAFE CONDITION HAZARDOUS TO LIFE
AND PROPERTY. The various programmer modules (EP160, EP260, and EP380) are inter-
changeable because they plug into a common chassis. Changing the dipswitches modifies the
operation of each programmer module. Care should be taken to insure the proper dipswitch set-
tings. Selection of the programmer module and setting the dipswitches for a particular applica-
tion should be made by a competent professional, such as a Boiler/Burner technician licensed by
a state or other government agency, engineering personnel of the burner, boiler, or furnace man-
ufacturer (OEM) or in performance of duties based on information from the OEM.
PTFI
10 SEC
TYPE EP166
NON-RECYCLE RUNNING INTERLOCKS (3/P) PURGE TIME - 30 SEC.*
FLAME FAILURE RESPONSE TIME 2 SEC.
PROGRAMMING SEQUENCE
L1/13
ON
LFS
CLOSED
(MD)
FIRING
PERIOD
L1/13
OFF
MTFI
15 SEC
PURGE
30 SEC
M
T
E
R
M
I
N
A
L
S
POST PURGE
15 SEC
MIN
30 SEC
HFS
CLOSED
(D/8)
HIGH (10-X) LOW (10-12) AUTO (10-11) LOW (10-12)
(MODULATOR MOTOR CIRCUIT)
5
6
7
DIPSWITCH SETTINGS
123456
INACTIVE Down Down Down Down
5
SEC.
TYPE EP170, EP174
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
5 SEC
PURGE
30 SEC
M
T
E
R
M
I
N
A
L
S
POST PURGE
15 SEC
HFS
CLOSED
(D/8)
MIN
30 SEC
HIGH (10-X) LOW (10-12) AUTO (10-11) LOW (10-12)
(MODULATOR MOTOR CIRCUIT)
5
6
7
DIPSWITCH SETTINGS
123456
INACTIVE Down Down Down Down
PTFI
10 SEC