System information
6
DIPSWITCHES - INACTIVE
DIPSWITCH 1 - FORCED BLOWER MOTOR START DELAY
When using a PPC5000 for boiler control operation, for the PPC5000 to recognize the beginning of a
new burner operating cycle, it is necessary to force the blower motor (terminal M) off or non-pow-
ered for a short period of time. Placing dipswitch 1 in the UP position will delay the blower from
starting 3 seconds after the operating control (terminal 13) closes or force the blower motor to de-
energize for 3 seconds in the event of a quick recycle. The function of dipswitch 1 is not made per-
manent after 8 hours of operation.
DIPSWITCHES 3, 4, & 5 - PURGE TIMING
Dipswitches 3, 4, & 5 determine the purge timing for the programmer module. Purge timings are
selectable from 30 seconds to 30 minutes. On the EP160, EP161, EP165, EP166, EP170 program-
mer, the purge timing is not initiated until the firing rate motor is driven to the high fire position (10-
X made) and the high fire switch is proven closed (term D-8). At the end of the purge timing, the fir-
ing rate motor is driven to the low fire position (10-12),
and the control waits an additional 30 sec-
ond (minimum) 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), (D-8), (M-D) INTERLOCK CHECK
*
Dipswitch 6 provides the option to require that the 3-P, D-8, and M-D interlock circuits be proven
closed
and open
at the appropriate times.
1.
If this option is enabled (switch 6 is up) the
3-P
Running Interlock circuit must be
proven open
at the start of the operating cycle (when the L1-13 circuit first closes). If the 3-P circuit is closed
at the start of the operating cycle, the blower motor will not energize (terminal M), and the con-
trol will “Hold” for one (1) minute waiting for the 3-P circuit to open. If, after one minute, the 3-
P circuit does not open, the control will lockout. If, within one minute the 3-P circuit does open,
the blower motor will energize (terminal M), and the control will wait up to ten (10) seconds for
the 3-P circuit to be
proven closed
.
2.
If this option is enabled (switch 6 is up), the
D-8
High-Fire Purge interlock circuit must be
proven open
at the start of purge before the Flame-Monitor™ will drive the firing rate motor to
the high-fire position, (at which time the switch must then be
proven closed
). If the D-8 inter-
lock circuit is closed at the start of the purge period, the control will “Hold” for ten (10) seconds,
then lockout.
3.
If this option is enabled (switch 6 is up), the
M-D
Low-Fire-Start interlock circuit must be
proven open
at the end of high-fire purge before the Flame-Monitor will drive the firing rate
motor to the low-fire position, (at which time the switch must then be
proven closed
). If the M-
D interlock circuit is closed at the end of the high-fire purge period, the control will “Hold” for
ten (10) seconds, then lockout.
*
The EP160, EP161, EP165, EP166, EP170 programmers are shipped with this option disabled (switch 6 is down).
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