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

Further details regarding the individual steps
Supply (flow) pres-
sure for natural
gas
below 15 mbar
15 to 25 mbar
above 25 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 condi-
tion, this value represents 100 % of
rated output.
On weather-compensated control
units, the display additionally shows
"Max. output".
Supply (flow)
pressure for LPG
below 42.5 mbar
42.5 to 57.5 mbar
above 57.5 mbar
Commissioning, inspection, maintenance
9. Danger
Gas escaping from the test
nipple leads to a risk of explo-
sions.
Check for tightness.
Open the gas shut-off valve, start the
boiler and check for tightness at test
nipple A.
Measures
Do not start the boiler. Notify your mains
gas or LPG supplier.
Start the boiler.
Install a separate gas pressure governor
upstream of the system and regulate the
pre-charge pressure to 20 mbar for natu-
ral 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 maximum out-
put.
4. Confirm the set value with d.
5. Record the settings for maximum out-
put on the additional type plate inclu-
ded with the "technical documenta-
tion". Affix the type plate next to the
original type plate on top of the
boiler.
(cont.)
17