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13.2
Firing for the first time
After commissioning the boiler (chapter 11.4) and avoiding any possible heat demand (remove the thermostat con-
nection lead), the boiler displays the following message:
Display message
H E A T I
N G : N o
d e m a n d
> > > : 1 2 3 .
4 ° C ( 1 2 3 .
4 ° C )
Reason
Boiler is active, but there is no heat demand.
The display describes:
•
The actual operation for heating or hot water
•
If a heat demand is activated
•
The temperature setting
•
The temperature measured
When mounting the bottom part of the si-
phon, before commissioning the boiler
and/or after maintenance, the siphon must
ALWAYS
be completely filled with water.
This is a safety measure: the water in
the siphon keeps the flue gases from
entering the plant room via the conden-
sate drain.
Turn LEFT to open
Turn RIGHT to close
Fill with
water
to the
edge
