Set Maximum Output; Check All Primary And Secondary Circuit Connections For Leaks; Perform Combustion Analysis - Viessmann VITODENS 222-F Service Instructions Manual

Vitodens 222-F B2TA 19 and 35 Service

Set Maximum Output

Check All Primary and Secondary Circuit Connections for Leaks

Perform Combustion Analysis

The maximum output for heating operation can be limited.
The limit is set via the modulation range. The maximum
adjustable heating input (or output) is limited upwards by
the boiler coding card.
Note: The input for DHW production can be limited as
well. To do so, change coding address "6F" in
coding level 2.
1. Press OK and simultaneously for approximately
4 seconds.
2. "Service functions"
3. "Maximum output"
4. "Change?" Select "Yes".
A value flashes on the display (e.g."85"). In the
factory setting, this value represents 100%
of rated output.
5. Select required value.
Check heating system and domestic hot water
connections. Ensure all connections are pressure tight.
Correct any leaks found on fittings, pumps, valves, etc.
IMPORTANT
A CO measurement (see page 28) must be taken before
and after working on gas appliances to eliminate risks to
health and to guarantee the satisfactory condition of the
system.
Record the measured combustion values in the sequence
stated in the Maintenance Record on page 103 in this
manual.
Start-up and Service
19