Maximum Output Setting - Viessmann Vitodens 200-W Installation And 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

Maximum output setting

The maximum output for heating oper-
ation can be limited. The limit is set via
the modulation range. The max. adjust-
able 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"
Supply (flow)
pressure for LPG
below 42.5 mbar
42.5 to 57.5 mbar
above 57.5 mbar
Commissioning, inspection, maintenance
(cont.)
9. Danger
Gas escaping from the test
nipple leads to a risk of explo-
sion.
Check for gas tightness.
Open the gas shut-off valve, start the
boiler and check for tightness at test
nipple A.
Action
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
pre-charge pressure to 20 mbar for natu-
ral gas or 50 mbar for LPG. Notify your
gas supply utility or LPG supplier.
4. "Change?" Select "Yes".
A value appears on the display (e.g.
"85"). In the delivered condition, this
value represents 100 % of rated heat-
ing output.
5. Set the required value.
Constant temperature control unit:
1. Press OK and å simultaneously
for approx. 4 s.
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