Control Unit 3. 1 Specification For Pyrocontrol; Functions; Operation - Viessmann KOB PYROTEC Technical Manual

Control unit
3.1 Specification for Pyrocontrol
Programmable logic control (PLC) for the PYROTEC boiler system
incl. the control of equipment for fuel charging according to the articles
listed separately. Modulating matching of the boiler output to heat con-
sumption is carried out.
Rated output range
Part no.

Functions

■ Output control circuit with modulating output operation (25-100 %)
■ Air-controlled by means of variable speed ventilation fan subject to
flow temperature
■ Exact fuel supply via the supply screw conveyor from dosing con-
tainer with separating barrier
■ Level monitored top up of dosing container
■ Limitation and distribution of the fuel in the combustion chamber
■ Emissions optimised control circuit with fine tuning of the fuel/air
mixture using the Lambda probe
■ The pressure control unit ensures a constant underpressure in the
combustion chamber.

Operation:

Operation is carried out via a 8" touch-screen module. All operating
data can be shown on the display. The set values of all important
parameters can be entered easily. Fault messages are displayed in
plain text and output in the sequence of occurrence.
Übersicht
Zeit: Text:
05.10.07 10:45:01 Warnung Feuerrauntüre offen
Aus
25,9 °C
21,0 %
30,0 °C 26,6
KOB
PYROTEC
Einstellungen
PYROTEC
kW
°C
0,0 °C 0,0
Analyse
Archiv
The control circuit of combustion optimisation with a Lambda probe
overlaps the output control circuit. With regard to fire protection and
personal safety, the highest possible quality criteria are fulfilled.
390 530
7423 692 7423 693 7423 694
■ Limitation of the combustion chamber temperature with correspond-
ing variation of air ratio for protection of the fireproof lining
■ Keeping up the return temperature through the boiler ensures a long
boiler service life
■ Protection to avoid:
– Excessive temperature
– Burn-back
– Opening of the combustion chamber door
– Opening of a charging cover
– Pressure in the combustion chamber
■ Zero volt output (fault message)
Programming module:
For operating the heating system.
The 8" touch-screen module integrated in the control panel door ena-
bles visualisation and graphical evaluation via the system.
Status: Level 0
26,4 °C
27,0 °C
26,2 °C
26,4 °C
°C
27,0 °C
Kessel Ein Kessel Aus
720 950 1250
7423 695 7423 696
Sperren
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