Herz pelletstar 10 Operating Instructions Manual Download

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Operating conditions

Betriebsanleitung_PS_10_60_Touch_Englisch_V1.3

OPERATING
CONDITIONS

Heating off

In this condition the equipment is switched off, i.e.
the burner is blocked.

Ready

The boiler or buffer temperature is sufficient to
sustain the loads or the boiler temperature has
reached the switch-off temperature.

Prepare ignition

In this condition the grate has been cleaned and
the lambda probe pre-heated.

Pre-ventilate

This condition serves to flush the combustion
chamber and the chimney with air.

Cold start

If  the  boiler  room  temperature  is  below  the  boiler
room  ignition  identifying  temperature  (standard
150  °C),  a  cold  start  is  carried  out.  Materials  are
pushed  in  at  intervals.  At  the  same  time  the
material  is  ignited  by  the  ignition  fans.  During  the
ignition  phase  there  is  a  check  as  to  whether  the
ignition was successful.

After  successful  ignition,  the  equipment  changes
over  to  the  burning  phase.  At  the  same  time  the
final  ignition  fan  phase  is  carried  out.  During  the
final ignition fan phase the ventilator of the ignition
fans runs for a minute longer in order to cool down
the heating element.

Should there be no ignition in the maximum
ignition period (3 x the set time) then the
equipment is switched off using the remote status
signal => F: IGNITION (see Error 66)

Scorch phase

This  phase  serves  to  achieve  an  even  fire  bed.
The  length  of  the  phase  is  set  in  the  fuel  values
(only  in  the  service  area  available).  Care  should
be taken here that combustion takes place with a
higher  surplus  of  oxygen.  This  serves  to  achieve
the  desired  even  fire  bed  more  quickly.  This
phase should not be set for longer than 5 minutes.

Run up phase

In the run up phase the equipment runs at rated
output. When the boiler temperature is reached it
then goes over to the control phase.

Control phase

In  this  phase  the  boiler  is  modulated  between
nominal  load  and  partial  load.  When  the  partial
load  stage  generates  too  much  energy,  i.e.  the
target  boiler  temperature  +  regulation  hysteresis
are exceeded and are then changed to the ready
condition.

Burn out phase

When  the  boiler  switches  off,  then  the  fuel
remaining in the combustion chamber is burnt out.
Care  should  be  taken  here  that  this  time  is  set
exactly,  as  otherwise  it  is  possible  that  material
present  in  the  combustion  chamber  will  not  be
burnt correctly.

Burner cleaning

During  burner  cleaning  the  burner  is  cleaned  of
ash. Firstly the fuel is burnt out. When the burnout
time  is  completed,  then  the  burner  plate  is
cleaned.  After  successful  cleaning  the  equipment
goes  back  into  normal  mode.  The  interval  is
calculated  via  the  runtime  of  the  plug-in  screw.
This  can  be  set  via  the  “Cleaning  interval”
parameter  in  the  service  area,  i.e.  in  order  to
achieve more frequent cleaning of the combustion
chamber  the  parameter  simply  has  to  be
shortened.

Heatexchanger cleaning

Heat  exchanger  cleaning  serves  to  increase  the
degree  of  efficiency.  Here  the  heat  exchanger  is
automatically cleaned and the fly ash falls into the
so-called  fly  ash  chamber.  The  interval  and
duration  of  the  cleaning  can  be  set  in  the  service
area  via  the  “HEC  INTERVAL”  or  “HEC
DURAT

ION”.

Output control

The  output  control  is  controlled  within  the  boiler
target  temperature  and  the  control  end  phase.
The  control  end  phase  is  the  boiler  target
temperature  +  control  hysteresis.  When  the
control end phase is reached the equipment goes
to burnout.

Flue gas temperature control

When  the  maximum  flue  gas  temperature  is
exceeded,  then  the  output  of  the  equipment  is
reduced.  If  the  temperature  is  not  reached  the
equipment goes back to normal output control.

Flame monitoring

Where the combustion values fluctuate too greatly
during operation, this is detected and the
equipment is switched off.