Checking The Ionisation Current; Checking The Draught - Viessmann VITOGAS 100-F Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Checking the ionisation current

8888
D Burner control unit
1. Pull ionisation cable C from ionisa-
tion electrode E.

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.
12
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.
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].)
(cont.)