Flue Gas Testing; Central Heating Boost Button; Checking Flue System For Leaks; Measuring Co Content Of Flue Gas - Bosch ZSB 30-2 Installation And Servicing Instructions

13

Flue gas testing

13.1 Central heating boost button

The following appliance outputs can be selected by
pressing the central heating boost button
lights up:
3 4
2 5
1 6
max
Fig. 53
= max. heating output setting
•
= max. rated heat output
•
= min. rated heat output
•
You have 15 minutes in which to take your
measurements. Afterwards, the appliance
returns to standard mode.

13.2 Checking flue system for leaks

Measuring O or CO levels in combustion air.
2 2
Use an annular-slot flue gas probe for the
measurements.
With a type C , C
13
gas tightness of the flue system can be
tested by measuring the O
of the combustion air. The O
be below 20,6 %. The CO
exceed 0,2 %.
until it
reset
eco
3 4
e
2
6
1
min max
6 720 644 143-35.1O
or C flue system, the
33 93
or CO content
2 2
level must not
2
level must not
2
B Remove sealing plug from combustion air testing
point (2, Fig. 54).
B Insert a flue gas probe into the testing point socket
and seal the testing point.
B Press the central heating boost button to select
maximum rated output.
2
1
Fig. 54
1 Flue gas testing point
2 Combustion air testing point
B Measure the CO and O
2
B Refit plug.

13.3 Measuring CO content of flue gas

Use a multiport flue gas probe for the measurements.
B Remove sealing plug from flue gas testing point
(1, Fig. 54).
B Insert a flue gas probe as far as it will go into the
testing point socket and seal the testing point.
B Press the central heating boost button to select
maximum rated output.
B Measure the CO levels.
B Repeatedly press the central heating boost button
until the light goes out.
The display will show the CH flow temperature again.
B Refit sealing plug.
Flue gas testing | 53
6 720 612 688-35.1O
levels.
2
6 720 644 143 (2010/09)
=
=