14
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 is 100 % of the rated
heating output.
5. Set the required value.
Service menu
1. Press
OK
and
å
simultaneously for approx. 4 s.
2. Select
"
3
"
using
Ú
. Confirm with
OK
.
The display shows
"FL"
and
"ON"
flashes.
3. Confirm with
OK
.
4. The display shows the set heating output (e.g.
"85"
)
and
"
A
"
. In the delivered condition, this value is
100 % of the rated heating output.
5. Set the required value. Confirm with
OK
.
Checking the combustion chamber pressure limiter
The combustion chamber pressure limiter responds in
the event of deflagration, blocks the burner and pre-
vents flue gas escaping if the flue system is damaged.
A
B
C
Fig. 5
A
Reset button
B
Connection hose
C
Plug-in connection
4
3
2
1
Fig. 6
■
Check connection hose
B
is seated correctly and is
undamaged; replace if necessary.
■
Check whether the combustion chamber pressure
limiter has responded:
Measure the resistance across terminals 1 and 3. If
the resistance is > 0
Ω
, the pressure limiter has
responded.
If the combustion chamber pressure limiter has
responded, check the following components and
replace if necessary:
■
Electrodes
■
Burner gauze assembly
■
Ignition transformer and ignition cables
■
Check the flue system for damage and leaks.
Check the combustion chamber pressure limiter is
working properly using a pressure tester. Switching
point 100
±
10 mbar. If the value measured differs
from this, replace the combustion chamber pressure
limiter.
!
Please note
Incorrect installation or installing damaged
burner components can result in deflagration.
■
Check the combustion chamber pressure lim-
iter is working properly.
■
Check the burner components are undamaged
and correctly installed.
Danger
Faulty components and deflagration can cause
potentially fatal poisoning due to the escape of
carbon monoxide in the flue gas.
Observe the maintenance instructions.
Commissioning, inspection, maintenance
Setting the maximum heating output
(cont.)
5792 925 GB
Содержание Vitocrossal 100 CI1
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