IBC Technologies VFC 160 Installation And Operating Instructions Manual - page 22
IBC Technologies Inc.
- 22 -
VFC 160
connector bus for control circuit wiring.
The integrity of the series control circuit is
preserved in the FXFR module’s internal
circuitry. Finally, the module comprises
the circuitry supporting the optional
Electronic Operator.
The Enunciator panel carries seven
indicator lamps (LEDs) pertaining to the
various control circuit components wired
to the module. The LEDs provide a visual
aid for locating open switches within the
control circuit. on the boiler showing the
states of the boiler:
1. power
2. airflow
3. water temperature operating range
(Operator)
4. water flow
5. vent temperature limit
6. water temperature limit
7. thermostat
The power indicator light always remains
on except when there is no power to the
boiler.
The remaining indicators light up in series
from right to left, beginning with the
thermostat. If an indicator is off, all
indicators to the left of it will be off. The
first unlit indicator shows an open circuit
at that point. If the boiler is heating, all
indicators will be on.
Output of the fan may be adjusted during
installation using the fan speed adjustment
screw. This allows optimization of fan
speed to minimize electrical consumption
and noise for each installation. Fan
adjustment should only be done by a
qualified technician with appropriate
equipment (incl. combustion analyzer)
during installation or servicing.
The DC Power / Enunciator module
circuitry also manages the Post-Purge
cycle - see 3.1.2 Post-Purge Cycle above.
3.3.11 Detailed System Checks
Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect the
electrical supply to the pump. Instead shut off the gas supply at a location external to the
appliance.
Do not use this boiler if any part has been under water. Immediately call a qualified service
technician to inspect the boiler and to replace any part of the control system and any gas
control which has been under water.