Setting The Max. Heating Output; Activating Screed Drying - Viessmann Vitodens 222-F Installation And Service Instructions For Contractors

Setting the max. heating output

A limit can be set on the maximum heating output for
heating operation. The limit is set via the modulation
range. The max. adjustable output is limited upwards
by the boiler coding card.
Note
Before the max. heating output can be set, the flow
rate is checked. Ensure adequate heat transfer.
01. Tap "Menu".
02. Select "Service".
03. Enter "viservice" password.
04. Select "Service functions".
05. "Max. heating output"

Activating screed drying

Screed drying
Various temperature profiles can be set for screed dry-
ing:
■ 7 predefined temperature profiles adjustable via
parameter F1, see Parameter level 2
■ Individual temperature profile, see following chapter
Adjusting the individual temperature profile for
screed drying
Setting range for set temperature: 5 to 60 °C
Duration of screed program: 30 days
Tap the following buttons:
01. "Menu"
02. "Service"
03. Enter "viservice" password.
04. "Service functions"
05. "Individual prog. screed drying"
06. Select the day for which a set temperature is to be
specified.
Commissioning, inspection, maintenance
06. Check whether a sufficient flow rate is guaranteed.
If necessary, increase the heat transfer.
Confirm the message with "Yes".
07. If the flow rate is sufficient, the following is shown:
"Testing, flow rate"
"Flow rate sufficient"
Confirm with OK.
08. A value is shown on the display (e.g. "85"). In the
delivered condition, this value represents 100 % of
rated heating output.
09. Select required value and confirm with OK.
10. End service functions.
07. Set the required set temperature.
Note
If screed drying is to be inactive on one of the
days, select a set temperature of 255.
08. Press OK to confirm
The set value is automatically adopted for the sub-
sequent days. The daily overview is displayed
again.
09. Press OK to confirm
A diagram of the program created is displayed.
10. Press OK to confirm
11. Yes, if screed drying is to be started immediately.
12. Select heating circuit.
Note
Whilst screed drying is active, the selected tem-
perature profile is displayed.
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