41
Weather-compensated control unit
Constant temperature control unit
Service menu
1. Press
OK
and
å
simultaneously for
approx. 4 s.
2.
"Service functions"
3.
"Max. output"
4.
"Change?"
Select
"Yes"
.
A value is shown on the display (e.g.
"85"
). In the delivered condition, this
value represents 100 % of rated heat-
ing output.
5. Set the required value.
Service menu
1. Press
OK
and
å
simultaneously for
approx. 4 s.
2. Select
"
3
"
with
Ú
and confirm with
OK
.
A value flashes on the display (e.g.
"85"
) and
"
A
"
appears. In the deliv-
ered condition, this value represents
100 % of rated heating output.
3. Select required value and confirm with
OK
.
Checking the balanced flue system for tightness (annular gap
check)
A
A
Combustion air aperture
For balanced flue systems tested
together with the heat source, there is no
requirement for a tightness test (over-
pressure test) during commissioning by
the flue gas inspector.
In this case, we recommend that your
heating contractor carries out a simple
tightness test during the commissioning
of your system. For this it would be suf-
ficient to check the CO
2
or O
2
concen-
tration in the combustion air at the annu-
lar gap of the balanced flue pipe.
If the CO
2
concentration is less than
0.2 % or the O
2
concentration is greater
than 20.6 %, the flue pipe is deemed to
be sufficiently gas tight.
If actual CO
2
values are greater or O
2
values are lower, then pressure test the
flue pipe with a static pressure of
200 Pa.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5585 174 GB
Service