Check Co Setting - Viessmann VITODENS 222-F Service Instructions Manual

Service
Check CO Setting
2
The Vitodens 222-F, B2TB boiler is equipped with the Lambda Pro Combustion Management System developed by
Viessmann which ensures optimal combustion quality independent of gas quality and type. (For a description of the
Lambda Pro Combustion Management System, see page 31 in this manual.) During initial start-up and maintenance
you will only need to check the CO
Note: The Vitodens 222-F, B2TB boiler comes factory set to operation with natural gas. (For instructions on how to
convert to operation with liquid propane gas, see page 16). For high-altitude operation above 5,000 ft. (1,500 m),
see page 16. The MatriX cylinder burner of this boiler is preset for the entire gas group. No adjustment or
readjustment of the burner is required.
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and O content at the boiler vent pipe adaptor.
2 2
Vitodens 222-F B2TB 19 and 35 Service
1. Connect a flue gas analyzer to test port A at boiler
vent pipe adaptor.
2. Open gas shut-off valve, start up boiler and create
heat demand.
3. Selecting low/high fire:
Service menu
- Press OK and simultaneously for approximately
4 seconds.
- "Actuator test"
- Selecting low fire: select "Base load OFF".
Then "Base load ON" appears and the burner
operates in low fire.
4. Measure CO and O
2
2
adaptor. If the measured values deviated by more
than 1% from the ranges for the respective fuel
type listed in the right column or in the table on
page 31.
- check the venting system for leaks
(see subsection on page 20).
- check that the boiler is set for the gas type used
(see subsection on page 15).
CO content range:
2
- 7.5 to 10.9% for natural gas
- 9.0 to 11.3% for LPG
O content range:
2
- 3.8 to 7.3% for all gas types
5. Enter measured values into the Maintenance Record
on page 96. Terminate by selecting 'all actuators off'.
6. Selecting high fire: select "Full load OFF". Then
"Full load ON" appears and the burner operates in
high fire.
7. Measure CO and O
2 2
adaptor. If the measured values deviated by more
than 1% from the ranges listed in the right column
or in the table on page 31.
- check the venting system for leaks
(see subsection on page 20).
- check that the boiler is set for the gas type used
(see subsection on page 15).
CO content range:
2
- 7.5 to 10.9% for natural gas
- 9.0 to 11.3% for LPG
O content range:
2
- 3.8 to 7.3% for all gas types
8. Press to exit actuator test after testing and enter
measured values into the Maintenance Record on
page 104.
content at boiler vent pipe
content at boiler vent pipe