VENMA Comfort S20, Operation And Maintenance Manual

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4.
Operation description
Burner operation begins with starting by ignition and sustaining fire, ending with
extinguishing and cleaning the burner.
The external screw feeder is responsible for transporting fuel from the hopper to the
burner.
The starting process during the first launch should be activated manually, then it will
be done automatically according to the controller settings.
Starting is preceded by blowing through the burner to remove any residues after the last
extinguishing from the combustion chamber. Then, the fuel is initially fed, and during that
time the igniter heats up to approx. 1000 O C, the fan-powered and igniter-heated air stream
causes the initial feed to ignite.
When the light sensor (photocell) detects light from the combustion chamber, the controller
switches off the igniter and then switches to the "Flame stabilisation" to heat up and
prepare the burner for operation. The following operating modes depend on the algorithm
selection, i.e.: (details of operating modes can be found in the Controller Manual).
- Modulation (minimum and maximum operation)
- PID (PID operation)
- SIGMA operation (optional).
Cleaning - when the burner is in operation, its head rotates cyclically, discharging ash
remains to the ash pan.
The burner is extinguished automatically or manually via the controller (see the Controller
Manual). It means burning off the fuel remaining on the furnace.
5.
Set composition
Part name: Reference picture:
VENMA pellet burner
VENMA St-976G controller with
cables and sensors.
The feeder is galvanised, 2 m in
standard (can be extended -
optional).
Flexible pipe
Burner chute with a fire-fighting
flap (Optional for extra charge)
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