Flue Gas Test; Chimney Sweep Mode; Tightness Test Of The Flue Gas Path; Co Test Of Flue Gas - Bosch Condens 8300i W Installation And Maintenance Instructions Manual

9.7

Flue gas test

Flue gas path testing
The checking of the flue includes the testing of the flue gas routing and a
CO test.
▶ Test the flue gas routing ( Chapter 9.7.2, page 39).
▶ Measure CO ( Chapter 9.7.3, page 39).
9.7.1

Chimney sweep mode

You have 30 minutes to take your measurements or to make your
settings. After this time, the device returns to normal operation.
In chimney sweep mode the rated output of the device can be selected.
▶ Ensure that there is heat transfer by opening the radiator valves.
▶ Press the OK key until the countdown is completed and Chimney
sweep is displayed.
▶ Confirm the query with Yes.
▶ Set the desired rated output using the  or the  keys.
The value is accepted after 2 seconds and marked with a tick.
▶ To exit the chimney sweep mode, press the d key.
Adjustment with removed casing in chimney sweep mode
1. Set the chimney sweep mode and start up the device at maximum
rated output.
2. Set the chimney sweep mode and start up the device at minimum
rated output.
9.7.2

Tightness test of the flue gas path

Measurement of O or CO content in combustion air.
2 2
Use an annular gap probe for the measurement.
For flue gas routing of concentric flue systems, the tightness of the flue
gas path can be tested with an O
combustion air. The O level must not fall below 20,6%. The CO
2
must not exceed 0,2%.
▶ Remove the plug from the combustion air test nipple [2].
▶ Insert a flue gas probe into the connector and seal the test point.
▶ Set the maximum rated output in chimney sweep mode.
1
Fig. 42 Flue gas test port and combustion air test nipple
[1] Flue gas test port
[2] Combustion air test nipple
▶ Measure the O and the CO
2 2
▶ Press the " key.
The device returns to normal operation.
▶ Remove the flue gas probe.
▶ Re-install the plug.
Condens 8300i W – 6721841533 (2022/12)
or CO measurement of the
2 2
content
2
2
6 720 614 153-08.2O
content.
9.7.3

CO test of flue gas

Use a multi-hole flue gas probe for the measurement.
▶ Remove the plug from the flue gas test port [1].
▶ Insert a flue gas probe into the port as far as it will go and seal the test
point.
▶ Set the maximum rated output in chimney sweep mode.
▶ Measure the CO content.
▶ Press the OK key.
The device returns to normal operation.
▶ Remove the flue gas probe.
▶ Re-install the bung.
9.8

Checking the electrodes

▶ Remove the electrode set with gasket.
▶ Check electrodes for pollution.
▶ Clean or replace electrodes if required.
▶ Install electrode set with new gaskets.
Fig. 43 Installing electrode set
▶ Check tightness of electrode set.
Gas/Gaz?
Fig. 44 Checking tightness
Inspection and maintenance
3 + 1 Nm
0010007498-002
0010007499-003
39