Measuring The Carbon Dioxide Content; Determining How Dirty The Burner And Heat Exchanger Are And Cleaning Them; Determining The Extent Of Contamination - Buderus Logano plus GB312 Installation Manual

9.5

Measuring the carbon dioxide content

V Insert the sensor through the testing hole in the flue
pipe into the centre of the gas flow.
V Record the flue gas readings.
If the CO content differs from the specified level by
2
0.5% ( Sections 7.11 to 7.13, pages 48 to 49),
adjust the burner as described in Sections 7.11
to 7.13, pages 48 to 49.
9.6

Determining how dirty the burner and heat exchanger are and cleaning them

The boiler can be dry or wet-cleaned.
A long and a short blade are available as accessories for
dry cleaning. Cleaning equipment for wet cleaning is also
available as an accessory.
Before cleaning the burner or heat exchanger, carry out
the following tasks:
9.6.1

Determining the extent of contamination

V Remove the blanking plug from the manifold or resona-
tor (natural gas rating 90 kW and 120 kW).
V Fit gas pressure testing nipple.
V Connect differential pressure tester to burner pressure
testing nipple and and a pressure testing point on the
flue socket ( Fig. 53)
Switching on the heating system on the BC10
Follow the instruction manuals for the BC10
and RC35.
Refer to the GB312 Application Manual for AM10 start-
up instructions.
If the boiler is not being used with an RC35 programming
unit, it can be commissioned using a PC running the Log-
amatic Eco-Soft 400/EMS software and a Service Key.
Please contact Buderus for more detailed information.
If the boiler is intended to be used with the Logamatic
4000 control system, the following operations must be
carried out:
V Switch off the Logamatic 4000 control system.
V Install the RC35 programming unit or the service key.
V Set the ON/OFF switch on the basic control unit to
position "1".
This turns on the entire heating system. The status dis-
play on the basic control unit lights up and shows the
current boiler water temperature in °F.
Logano plus GB312 - Technical specifications are subject to change without prior notice
Heating system servicing
3
Fig. 53 Determining the extent of contamination
1 Blanking plug
2 Pressure testing nipple.
3 Testing point on boiler flue socket
110
100 120
90 130
Eco 140
Aut
Fig. 54 Switching on the basic control unit
9
1 2
130
110
150
90
170
190
Aut
7 747 010 720-38.2RS
59