12
Checking the ionisation current
8888
D
Burner control unit
1.
Pull ionisation cable
C
from ionisa-
tion electrode
E
.
2.
Connect the measuring device
A
as
shown in the diagram:
■ Push plug-in adaptor (
7
6/4)
B
into ionisation cable
C
.
■ Push adaptor cable (
7
4/6)
F
onto ionisation electrode
E
.
■ Push measuring device plug
A
into plug-in adaptor
B
and adap-
tor cable
F
.
3.
Start the boiler.
4.
Check the ionisation current.
■ When the pilot burner is lit:
Min. 1.0 µA
■ When the main burner is lit:
Min. 3.0 µA
5.
Record the actual values in the report
on page 28.
Checking the draught
Measure the draught behind the draught
hood in Pa (100 Pa = 1 mbar) and record
it in the service report on page 28.
Note
Required boiler draught: 3 Pa
(0.03 mbar).
The chimney draught must not exceed
10 Pa (0.1 mbar). It may be necessary to
fit a draught stabiliser into the chimney.
(Seek the agreement of your local flue
gas inspector [where appropriate].)
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 699 GB
