Burnham Series 2B - Manual (Page 20)

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e. Reconnect pilot tubing and check pipe and
fittings from meter to combination Gas
valve for leaks using soap solution or other
approved method.
2. Electronic Ignition Models (Suffix I):
a. Turn "ON" electric switch serving boiler.
b. Open Manual Shut-off valve upstream of
Combination Gas valve.
c. Loosen or remove Inlet Pressure Tap Plug in
Combination Gas valve and when purging is
complete, tighten or replace plug. See Figure
19.
d. Check pipe and fittings from meter to
Combination Gas valve using soap solution
or other approved methods.
CAUTION
e. Test gas piping and connections between
Combination Gas valve and manifold,
orifices, and pilot piping for leaks after
boiler is operating. Use soap solution or
other approved method.
3. INSTRUCTIONS TO PUT ThE BOILER IN
OPERATION.
A. See Figure 20 for electronic ignition (EI).
Electronic Ignition Modules with LED indicators.
Table 5 cross-references the ignition module
terminal designations to the ignition terminal
numbers in the wiring ladder diagrams. The yellow
LED indicates the status of the flame, see Table 6.
The green LED indicates the status of the system,
see Table 7. See Figure 21 for LED locations. See
Figure 28 for Troubleshooting Guide.
Figure 1: LED Locations
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
Table : Ignition Module Terminal Cross-
Reference
Yellow LED Flash
Code a
Indicates Recommended Service Action
Heartbeat Normal Flame Signal N/A
2
Weak Flame Signal -
System will operate reliably but flame signal is less than
desired.
Note: This indication may flash temporarily during or
shortly after lightoff on some applications.
Perform routine maintenance to
assure optimum flame signal.
1
Marginal Flame Signal (less than 1.1 µA) -
System may not operate reliably over time. Service call
recommended.
Note: This indication may flash temporarily during or
shortly after lightoff on some applications.
Check gas supply, pilot burner, flame sense
wiring, contamination of flame rod, burner
ground connection.
OFF
No Flame or Flame Signal -
below minimum threshold for system
operation.
N/A
a Flash Code Descriptions
- Heartbeat: Constant ½ second bright, ½ second dim cycles.
- The flash code number signifies that the LED flashes X times at 2Hz, remains off for two seconds, and then repeats sequence.
Table : Yellow LED Flame Codes