Operating instructions

67
H. Operating Instructions.
1. Follow Operating Instructions to place boiler in
operation. See Figure 36.
2. Enhanced Electronic Ignition Module with single
Status LED indicator. See Figure 37A “ Location of
LED”.
Figure 37A: Location of LED
TABLE 10: IGNITION MODULE TERMINAL
CROSS-REFERENCE
Table 10 cross-references the ignition module
terminal designations to the ignition terminal
numbers in the wiring ladder diagrams.
Table 11 provides green LED status codes and
recommended service action where applicable.
3. Flame Current Measurement Procedure. See Figure
37B . “Measuring pilot ame current with micro-
ammeter”
Ignition Module
Terminal Designation
Wiring Ladder Diagram
Terminal Number
MV 1
MV/PV 2
PV 3
GND 4
24V (GND) 5
24V 6
SPARK 9
Figure 37B: Measuring Pilot Flame Current
with Micro-ammeter
a. Pilot ame current in micro amps can be
measured using any standard micro-ammeter by
inserting the meter probes into the module holes
labeled FLAME CURRENT as shown in Figure
37B.
b. Flame current must be measured with pilot
valve open/pilot lit but the main valve closed.
c. Disconnect MV lead wire from the module
before measuring ame current. Trying to
measure the pilot ame current in series with the
wiring will not yield the accurate reading.
d. The minimum steady pilot ame signal must
be 1 μAmp (microampere) DC (direct current).
e. For reliable operation the ame current should
be 2 μAmp or greater.
f. To ensure adequate ame current:
i. Turn off boiler power at circuit breaker or
fuse box