15
We recommend you contact your local
heating contractor if your heating sys-
tem has been out of use for a long
period.
1.
Open gas shut-off valve
B
.
2. Switch ON the power supply, e.g. at
a separate MCB/fuse or a mains
isolator.
3.
Turn ON/OFF switch A ON.
The control unit carries out a self-
test after being switched on.
Your heating system and room tem-
perature controller (if installed) are
now ready for operation.
Note
Boiler frost protection is enabled.
!
Please note
Frost protection is only
ensured for as long as the
power supply is stable.
Switch ON the power supply
(MCB/fuse, mains isolator)
and the control unit ON/OFF
switch.
If a pressure measurement, e.g.
"0.05 MPa", or fault display "06" is
flashing on the display, the pres-
sure in the heating system is too
low. In this case, top up with water
or notify your heating contractor.
Start-up/shutdown
Starting the heating system
5837147
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