Installation Manual

5350 485 GB 08/2007

Combustion

If the actual CO2 or O2 values lie outside their respective ranges, proceed with

the following steps:

• Check the balanced flue system for soundness, see page 61

• Check the ionisation electrode and connecting lead, see service instructions.

• Check the parameters of the combustion control unit, see service instructions.

Note

During commissioning, the combustion control unit carries out an automatic calibration. This

may lead to CO emissions in excess of 1000 ppm for a short time.

1. Connect a flue gas analyser at test port

(on the boiler flue outlet).

2. Open the gas shut-off valve, start the

boiler and create a heat demand.

3. Adjust the lower output of the

constant temperature control unit:

4. Check the CO

2 content. Should the

actual value deviate from the above

ranges by more than 1%, implement

steps above.

5. Enter actual values into the service

report.

6. Adjust the upper output on the

constant temperature control unit:

7. Check the CO

2 content. Should the

actual value deviate from the above

ranges by more than 1%, implement

steps above.

press simultaneously:

“1” is shown

press: “2” is shown

Vitoden 200-W pages 44 - 23/9/07 8:27 pm Page 19