Viessmann VITODENS 200-W WB2B Series Start-Up/Service Instructions page 17

Steps
(continued)
I
nitial start-up
I S
nitial start-up ervice
I S
nitial start-up ervice
11. Set maximum input
H 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.
1. Start up boiler.
2. Press "9" and "t t t t w w w " simultaneously w
until a value flashes on the display
(e.g. "85"), and "A" and "Max.
output" appear. In the factory
default setting this value represents
100% of the rated input (or output).
3. With buttons "⊕ / " select the
required value in % of the rated
input (or output) as maximum input
(or output).
4. Confirm the set value with "
12. Check all primary and secondary circuit connections for leaks
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.
13. Perform combustion analysis
IMPORTANT
A CO measurement (see page 24) 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 73 in this
manual.
Initial Start-up and Service
The input for DHW production can be
limited as well. To do so, change
coding address "6F" in coding level 2.
".
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