Manual

2 BG1100M Direct Spark Ignition Control Installation Instructions
Location Considerations
Choose a location that provides the shortest, direct
cable route to the spark electrode, pilot burner/igniter-
sensor assembly. Easy access to the terminals is
desired for wiring and servicing. The control may be
mounted in any position. Mount the control on a
grounded metal surface with #6 sheet metal or
machine screws through the mounting holes provided
in the enclosure.
The spark electrode and sensor assembly must be
positioned for easy access and securely mounted to
the burner to ensure that the assembly remains
properly positioned with respect to the burner flame.
The burner flame must engulf at least 3/8 in.
(9.52 mm) of the flame sensor. If a separate flame
sensor is used, keep the sensor wire as short as
possible and do not rest it against grounded metal
surfaces. Standoff insulators are recommended.
The spark electrode, flame sensor, and BG1100M
must share a common ground with the burner to
operate correctly. Thermoplastic insulated wire with a
minimum rate of 221˚F (105˚C) is recommended for
the ground wire. Ensure that the flame sensor wire and
the high voltage spark transformer wire are separated
from one another by a minimum distance of 1/4 in.
(6.35 mm) and are not wrapped around any pipe, other
wiring, or accessory.
Wiring
!
WARNING: Risk of Explosion or Fire.
Locate all safety, limit, and operating controls in
series with the thermostat terminal (TH) on the
ignition control. Improper installation may cause gas
leaks, which can lead to an explosion or fire and
may result in severe personal injury or death.
Refer to Figure 1 and Figure 2 for wiring diagrams. All
wiring should be in accordance with the National
Electrical Code (NEC) and all other local codes and
regulations.
Check the voltage rating marked on the control and
make sure it is suited to the application. Use a Class 2
transformer capable of providing 24 VAC under
maximum load, including valves. A transformer having
excessive primary impedance due to poor coupling
affects the ignition potential.
The high-voltage spark transformer cable is noise
suppression (resistive) type, rated for at least 15kVA
and must not be in continuous contact with a metal
surface. Use standoff insulators. Ensure that the flame
sensor wire and high voltage spark transformer cable
are separated from one another by a minimum of 1/4
in. (6.35 mm) and are not wrapped around any pipe,
other wiring, or accessories.
!
WARNING: Risk of Electric Shock.
Before applying power to the control, connect the
high voltage cable to the spark transformer terminal
and spark electrode (pilot burner assembly). Verify
the ground wire is attached to the pilot burner and
the control ground terminal strip. Failure to follow
this procedure can cause electric shock and may
result in severe personal injury or death.
The BG1100M replaces existing direct spark ignition
controls with the following specifications:
• single rod (local sense) or dual rod (remote
sense) flame sensing
• trials for ignition 1 or 3 trials
• 100% shutoff/lockout with none, 5 or 60
minutes continuous retry
• trial times of infinte, 4, 5, 8, 10, 15, 20, 25,
30, 50, 60, 85, 90, or 120 seconds
• prepurge period of none, 4, 8, 10, 15, 30, 45,
60 seconds or 4 minutes
• main burner 400,000 Btu/hr maximum
• pilot burners with flow rates of 1,500 Btu/hr or
less
• not subjected to temperatures below -40˚F
(-40˚C) or above 170˚F (77˚C)