Checking All Gas Equipment For Soundness At Operating Pressure; Flue Gas Emissions Test - Viessmann Vitodens 200 Service Instructions Manual

Further details regarding the individual steps
Checking all gas equipment for soundness at operating pres-
sure
Danger
Escaping gas leads to a risk of
explosions.
Check gas equipment for
soundness.

Flue gas emissions test

The Vitodens 200 is set up in the factory for natural gas E and can be converted
to natural gas LL or LPG P with the aid of a conversion kit.
During commissioning or maintenance, check the CO
outlet.
Subject to the Wobbe index, the CO
7.4 to 10.5% for natural gas E
7.8 to 10.5% for natural gas LL
8.5 to 11.0% for LPG P
Compare the actual CO
dual gas groups (check the gas group with your mains gas or LPG supplier).
If the actual CO value deviates by more than 1% for natural gas or 0.5% for
2
LPG, verify the following:
Check that the correct gas restrictor has been fitted.
Check the balanced flue system for soundness, see page 15.
1. Connect a flue gas analyser at test
port A ( on the boiler flue outlet).
Commissioning, inspection, maintenance
content fluctuates between:
2
value with the above CO
2
2. Open the gas shut-off valve, start
the boiler and create a heat
demand.
3. Adjust the lower output.
Constant temperature control
unit:
K + d
(cont.)
level at the boiler flue
2
value ranges for the indivi-
2
press simultaneously:
"1" is shown.
21