Setting The Maximum Output - Viessmann VITODENS 200-W Service Instructions Manual

Further details regarding the individual steps
Supply (flow) Supply (flow)
pressure for nat- pressure for
ural gas LPG
below 15 mbar below 42.5 mbar
15 to 25 mbar 42.5 to 57.5 mbar
above 25 mbar above 57.5 mbar

Setting the maximum output

Note
You can limit the maximum output for heating operation. The limit is set via the
modulation range. The max. adjustable heating output is limited upwards by the
boiler coding card.
1. Start the boiler.
2. Press K and F simultaneously
until a value flashes (e.g. "85") and
"A" appears. In the delivered con-
dition, this value represents 100 %
of rated output.
On weather-compensated control
units, the display additionally
shows "Max. output".
Commissioning, inspection, maintenance
(cont.)
9. Danger
Gas escaping from the test
nipple leads to a risk of
explosions.
Check for soundness.
Open the gas shut-off valve, start
the boiler and check for soundness
at test connector A.
Measures
Do not start the boiler. Notify your
mains gas or LPG supplier.
Start the boiler.
Install a separate gas pressure gover-
nor upstream of the system and regu-
late the inlet pressure to 20 mbar for
natural gas or 50 mbar for LPG. Notify
your mains gas or LPG supplier.
3. With a/b select the required
value in % of rated output as maxi-
mum output.
4. Confirm the set value with d.
5. Record the settings for maximum
output on the additional type plate
included with the "technical docu-
mentation". Affix the type plate next
to the original type plate on top of
the boiler.
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