CTC Union ecoflex, Installation And Maintenance Manual

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10 CTC EcoFlex
General Information
Safety/alarm
The boiler is designed in accordance with the main principles we use in oil
fired heating. The advantage with this system is convenient handling, as fuel
storage location is not limited by boiler room lay out. The separation of the
boiler and fuel storage, combined with discontinuous fuel supply between
these, gives a high level of safety against the spread of fire. The effects
and the damage resulting from incorrect operation or a fault in function or
installation should therefore be limited to the burner.
If a fault occurs on the boiler temperature sensor, the safety limit thermostat
should intervene and prevent the boiler from boiling. In addition, the boiler
is designed to automatically return to normal operating mode after any
operation disruptions such as power failure, fuel disruption etc.
If a fault occurs which results in the system stopping, this is indicated by a
red light signal on the control panel (light diode) combined with a message
on the cause of the fault on the display. In addition, the light diode on the
room sensor flashes. The boiler has a unique design in which safety is a part
of the function of the system. Safety is therefore not provided by an add-
on safety system. Safety is secured by the path of fuel in the burner auger
pipe in practice being broken within the boiler itself. There is therefore no
continuous line of fuel outside the boiler which can transfer heat.
A description of alarms can be found in the chapter “Alarm texts and fault
tracing/measures”
Safety, a natural part of
the function
A small limited volume of pellets is fed from pellets storage via the external
feed system to the top connection each time refilling takes place. Dosaging
uses a special feed auger which supplies fuel via the rotary valve and burner
auger to the hearth, so ensuring the supply of a precise and even pellet
volume to the hearth. When the burner auger supplies the pellet at a rate
which is three times faster than the supply of pellet, a safety zone is formed
with very few individual pellet between the hearth and the top connection.
This safety zone remains intact, irrespective of power failure, maintenance
failures or equipment breakdown.
Safety has become a part of operation.