Operating instructions

Flue gas emissions test

The Vitodens 333 is set up in the factory for natural gas E and can, with the aid

of a conversion kit, be conve rted to natural gas LL or LPG P (on ly 26 kW).

During commissioning o r maintenance, check the CO

2 leve l at the flue outlet .

Note

The MatriX burner of the Vitodens 333 is preset for the entire gas group. There-

fore, the burner re quires no furthe r setting or adjustment.

Subject to the Wobbe index, the CO

2 content fluctuates between

6.6 to 10.0% for natural gas E

7.0 to 10.0% for natural gas LL

8.5 to 10.5% for LPG P (only 26 kW)

Compare the actual CO

2 value with the above CO2 value range s for the indiv i-

dual gas groups (check the gas group with your mains gas or LPG supplier).

If the actual CO

2 valu e deviates by mor e than 1% for na tural gas or 0.5% f or

LPG (only 26 kW), proceed as follows:

Check that the cor rect gas restrictor h as been installed.

Check the balanced flue system for soundness, see page 16.

Maintain limit s to EN 483 and EN 297 (CO conte nt < 1000 ppm).

1. Connect a flue gas analyser at the

flue gas port A ontheflueoutlet.

2. Open the ga s shut-off valve, start

the boiler and create a heat

demand.

3. Select the lower rated output.

Constant temperature control

unit:

Press K + d simultaneously:

"1"isshown.

Weath er –compensated control

unit:

Press K + d simultaneously:

"Relay test"and

then "Base load"is

shown.

4. Check the CO

2 content. If the v alue

lies outside the above range, take

themeasureslistedonpage24.

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

5692 619 GB