Fulton Boiler FBS Series
FBS 01/05 14
Section
4
Controls & Burner
The following brief description of the fittings and controls used on the FB-S boiler is intended to
provide the operator with a basic understanding of the operating principles, which is essential for the
continued efficient use of the boiler.
1. Boiler Control Panel
Boiler controls and indicators are housed in a control panel mounted on the side of the boil.
One-phase 220v/50HZ power is available. These controls are as follows:
Power Isolator Switch.
Control panel power supply ON/OFF switch, mounted on the panel door.
Power On Indicator.
Indicates that the door isolator is in the ON position and the panel is electrically
live.
WARNING
The power on the indicator is derived from on phase. It is possible for that the Power On
Indicator supply phase to be down, leaving the other two phases live. Always isolate the
supply before working on the panel.
1
st
Low Water Indicator.
This lamp will be illuminated and an alarm sounded when the water level in the boiler falls to the 1
st
low water level. The burner will shut down and the alarm will continue to sound until the water level is
restored to a safe working level. The alarm will then cancel, the indicator lamp will extinguish and the
burner will automatically restart.
2
nd
Low Water Alarm/Reset Switch.
Sounds and alarm on switch on, press to reset. If the level of water in the boiler falls below the second
pre-set limit during boiler operation. The 2
nd
Low Water Alarm/Reset Switch will illuminate, the alarm
will sound and the burner will shut down. The water level must be restored before the alarm can be
cancelled by pressing the switch.
High Water Indicator (when fitted).
This lamp will illuminate and alarm sound when the water level reaches a pre-determined high level.
The feed pump will stop. When the water level falls to the normal working level, the indicator lamp will
extinguish and the alarm cancel.
Pump Only/Off/Pump & Burner On.
This rocker switch has three separate functions. In the PUMP ONLY and PUMP & BURNER ON
positions, the power supply is switched through to the control system. It is a mandatory requirement
of the AOTC and gas supply standards that when the control system is first energized, or
re-energized (power restoration), it must go to a fail-safe shutdown position, sound and alarm and
require manual resetting to cancel the alarm. The alarm condition, when activated, is cancelled in
both position by pressing the 2
nd
Low Water Alarm and High Pressure Alarm reset switches.
PUMP ONLY Position. This position should only be selected to fill the boiler. The normal functions of
the level alarm system are overridden to prevent a continuous alarm while the boiler is being filled.
The pump off level will function normally and switch the pump off once the correct water level is
reached.
NOTE
1) The burner mounted Burner ON/OFF/Reset switch should be in the OFF position during
the filling process.
2) The Pump On/Pump off Switch should be in the PUMP ON position.
3) The power restoration alarms will only sound if the burner mounted Burner On/Off/Reset
switch is left in the ON position.
Both alarms will be cancelled when pressing the reset switches irrespective of the water level in the
boiler.
OFF position. In this position the burner, feed pump and control system are off.
PUMP & BURNER ON position. In this position, both burner and pump will run under automatic
control providing that the burner mounted Burner On/Off/Reset Switch is in the ON position, and the
pump On/ Pump Off Switch is in the PUMP ON position.
