Schwank 2300 Series Installation & Owner's Manual page 18

Flame Failure - Re-Ignition:
If the established flame signal is lost while the burner is operating, the control will re-
spond within 0.8 seconds. The HV spark will be energized for a trial ignition period in
an attempt to relight the burner.
If the burner does not light the control will make two more attempts to relight the
burner before de-energizing the gas valve. If the burner does not relight, the control
will go into lockout as noted above in "Failure to light". If flame is re-established, nor-
mal operation resumes. Multi-try models will allow three tries for ignition including inter-
purges.
Flame current is the current which passes
through the flame from the sensor to
ground. The minimum flame current nec-
essary to keep the Fenwal 35-60 system
from lockout is 0.7 microamps (µA). To
measure the flame current, connect analog
DC microammeter to the FC-FC+ termi-
nals.
Meter should read 0.7 µA or higher. If the
meter reads below "0" on scale, meter
leads are reversed. Disconnect power and
reconnect meter leads for proper polarity.
Cautions:
1. Ceramic insulators should not be in or close to the flame.
2. Electrode assemblies should not be adjusted or disassembled. Electrodes should
have a gap spacing of 1/8"- 3/16" (3.12± 0.81 mm). If this spacing is not correct,
the assembly must be replaced. Electrodes are preset and NOT field adjustable.
3. Exceeding the temperature limits can cause nuisance lockouts and premature elec-
trode failure.
The control must be secured in an area that will experience a minimum of vibration
and remain below the maximum operating temperature of 160°F.
Page 14
2300 / IO 210 Manual
IM091231
RD: DEC 2009
R.L. 11B
BA