Set Maximum Input; Check All Primary And Secondary Circuit Connections For Leaks; Perform Combustion Analysis - Viessmann VITODENS 200-W Service Instructions Manual

Vitodens 200-W B2HA 19, 28, 35 Service
Set Maximum Output

Check All Primary and Secondary Circuit Connections for Leaks

Perform Combustion Analysis

The maximum input (or 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 input (or output).
5. Select required value.
Check heating system and domestic hot water
connections (if applicable). Ensure all connections
are pressure tight. Correct any leaks found on fittings,
pumps, valves, etc.
IMPORTANT
A CO measurement (see page 27) 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 97 in this
manual.
Start-up and Service
19