Checking The External Lpg Safety Valve (If Installed); Matching The Control Unit To The Heating System - Viessmann Vitodens 242-F Installation And Service Instructions Manual

Checking the combustion quality
4. Select the upper heating output:
Select "Full load OFF". Then "Full load ON"
appears and the burner operates at its upper heat-
ing output.
5. Ending output selection:
Press .
ä
Checking the flue system for unrestricted flow and tightness

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.
■ To do this, select the relevant system scheme (see
the following diagrams).
■ Set the codes according to the accessories fitted:
Accessories installation and service instruc-
tions
System version 1
One heating circuit without mixer A1
wQ
wP
Fig. 52
Vitodens 242-F
1
Outside temperature sensor
2
Heating circuit without mixer A1
3
(cont.)
Note
Various system components are recognised automati-
cally by the control unit and the relevant codes are
adjusted automatically.
For individual coding steps, see page 68.
3
2
1
wP
wQ
Commissioning, inspection, maintenance
Solar collectors
Collector temperature sensor
59