Viessmann VITOCROSSAL 200 Service Instructions Manual page 9

Further details regarding the individual steps
6. Switch ON system ON/OFF
switch B at the control unit. If
fault indicator A at the control
unit illuminates and burner control
unit display C flashes, first press
reset D at the burner control
unit.
Note
The system can enter a fault state
during commissioning, if the sup-
ply line carries insufficient gas
(the fault indicator at the control
unit illuminates). Ventilate the gas
supply line again and reset the
burner control unit.
Commissioning, inspection, maintenance
(cont.)
7. Match the coding at the boiler
control unit according to the table
on page 54.
Control unit installation
and service instructions
8. Check the function of the neutra-
lising system, including the
hydraulic seal in the siphon.
Neutralising system oper-
ating instructions
9. Check all gaskets/seals and plugs
and retighten, if necessary.
Note
We recommend you check all
heating water connections after
approx. 500 hours for leaks (see
page 20).
10. A few days after commissioning,
check the boiler door and flue gas
box lid, and retighten all screws.
9