BIO · Edition 09.22
EN-11
– Adjust the gas and air supply so that the burner
is always operated with excess air – otherwise
CO will form in the furnace chamber. CO is
odourless and poisonous! Conduct a flue gas
analysis.
3
Measure the gas and air flow rates if possible. De-
termine the lambda value and readjust the settings
if required.
6.5 tightness test
DAnGeR
Escaping gas!
Danger from a leakage at the gas connections.
– Check the gas connections on the burner for
leaks immediately after commissioning the
burner.
1
2
3
4
➔
Avoid condensation due to the furnace atmos-
phere entering the burner body. While the burner
is switched off, at furnace temperatures above
500°C (932°F), it must be cooled with a low air
volume – see page 11 (6.6 Cooling air).
6.6 Cooling air
➔
While the burner is switched off and depending on
the furnace temperature, there must be a certain air
flow for cooling the burner components.
0
12
14
8
4
10
6
2
16
BIO/ZIO*
BIO/ZIO..K..(..E)
BIO/ZIO..K
BIOW/ZIOW
..(..E)..H
BIO/ZIO..(..E)
600
500
700 800 900 1000 1100 1200 1300 1400 1500
T
furnace
°C
% of cooling air
* also BIOW/ZIOW
➔
Diagram: the cooling air percentage specified in
the diagram refers to the operating flow rate for air.
➔
Leave the air fan switched on until the furnace has
cooled down completely.
6.7 Blocking and recording the settings
1
Produce a measurement report.
2
Set the burner to low fire and check the settings.
3
Set the burner to low and high fire several times
while monitoring the pressure settings, flue gas
values and flame patterns.
4
Remove the measuring devices and close off the
test nipples – tighten the grub screws.
5
Block and seal the adjusting elements.
6
Induce a flame failure, e.g. by pulling the terminal
boot off the flame rod. The flame detector must
close the gas safety valve and signal a fault.
7
Switch the system on and off several times while
monitoring the automatic burner control unit.
8
Produce an acceptance report.
DAnGeR
Risk of explosion in case of CO being formed
in the furnace chamber! CO is odourless and
poisonous!
An incorrect change of the burner settings may
change the gas/air ratio and lead to unsafe operat-
ing conditions:
– All interventions may only be carried out by
qualified gas technicians.
7 MAIntenAnCe
➔
Maintenance and function check every six months.
If the media are highly contaminated, this interval
should be reduced.
DAnGeR
Risk of explosion!
– Please observe the appropriate precautions
when igniting the burner.
– Maintenance work on the burner must be
carried out by authorized trained personnel only.
DAnGeR
Risk of burning!
– Outflowing flue gases and burner components
are hot.
➔
We recommend that all the gaskets removed during
maintenance work be replaced. The appropriate
gasket set is available separately as a spare part.
1
Check the ionization and ignition cables.
2
Measure the ionization current.
➔
The ionization current must be at least 5 µA and
must not vary.
+
μ
A
–
Z
I
3
Disconnect the system from the electrical power
supply.
4
Shut off the gas and air supply – do not change
the restrictor settings.
