Checking The Flue System For Unrestricted Flow And Leaks; Checking The External Lpg Safety Valve (If Installed); Matching The Control Unit To The Heating System; Adjusting Heating Curves - Viessmann VITODENS 222-F Installation And Service Instructions Manual

Checking the combustion quality
07. OK
08. Use / to set the max. value.
09. OK
10.
11. Use / to select the "Boiler" group.
12. OK
13. Use / to select "Burner modulation, set
value".

Checking the flue system for unrestricted flow and leaks

Checking the external LPG safety valve (if installed)

Matching the control unit to the heating system

The control unit must be matched to the system equip-
ment level.
Set the parameters according to the accessories fitted:

Adjusting heating curves

Tap the following buttons:
01.
02. Use / to select "Settings".
03. OK
04. Use / to select "Heating curve".
05. OK
06. Use / to select "Heating circuit ..." for the
required heating circuit.
Calling up and resetting the service display
Checking service messages
1.
2. Use / to select "Active messages".
Commissioning, inspection, maintenance
(cont.)
14. OK
15. Set the lower heating output:
Select "Minimum heating output".
The burner now operates at the lower heating out-
put.
16. Set the upper heating output:
Select "Maximum heating output".
The burner now operates at the upper heating out-
put.
Accessories installation and service instructions
07. OK
08. Use / to select "Slope" or "Level".
09. OK
10. Use / to set a value according to the system
requirements.
11. OK to confirm
3. OK
4. Use / to select "Service".
5. OK
Existing messages are displayed.
53