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

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Further details regarding the individual steps
Supply pressure (flow pressure)
for natural gas
below 17.4 mbar
17.4 to 25 mbar
above 25 mbar

Setting the maximum output

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.
Weather-compensated control unit:
1. Press OK and å simultaneously
for approx. 4 s.
2. "Service functions"
3. "Max. output"
4. "Change?" Select "Yes".
A value flashes on the display (e.g.
"85"). In the delivered condition, this
value represents 100 % of rated out-
put.
5. Select required value.
for LPG
below 25 mbar
25 to 47 mbar
above 47 mbar
Commissioning, inspection, maintenance
Measures
Do not start the boiler. Notify your gas
supply utility or LPG supplier.
Start the boiler.
Install a separate gas pressure governor
upstream of the system and regulate the
supply pressure to 20 mbar for natural
gas or 37 mbar for LPG. Notify your gas
supply utility or LPG supplier.
Constant temperature control unit:
1. Press OK and å simultaneously
for approx. 4 s.
2. Select Ú "3" and confirm with OK.
A value flashes on the display (e.g.
"85") and "A" appears. In the deliv-
ered condition, this value represents
100 % of rated output.
3. Select required value and confirm
with OK.
(cont.)
17

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