GB-7
D
GB
F
NL
I
E
Commissioning
DANGER
Risk of explosion!
Please observe the appropriate
precautions when igniting the burners.
Risk of poisoning!
Open 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.
ZKIH: electric shocks can be fatal!
The burner
housing cover must be fitted before igniting the
burner.
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▷
Arrange the adjustment and commissioning of
the burner with the system operator or manu-
facturer.
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▷
Check the entire system, upstream devices and
electrical connections.
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▷
Pre-purge the furnace chamber with air (5 x
furnace chamber volume) before every ignition
attempt.
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▷
Fill the gas line to the burner carefully and cor-
rectly with gas and vent it safely into the open
air – do not discharge the test volume into the
furnace chamber. Risk of explosion!
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▷
If the burner does not ignite although the auto-
matic burner control unit has been switched on
and off several times: check the entire system.
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▷
After ignition, monitor the gas and air pressures
measured on the burner and the flame. Measure
the ionization current. Switch-off threshold – see
automatic burner control unit operating instruc-
tions.
1
Switch on the system.
2
Open the manual valve.
3
Ignite the burner via the automatic burner control
unit.
4
Adjust the burner.
▷
▷
Set the ionization current by adjusting the air
volume.
DANGER
Risk of explosion in case of CO being formed
in the furnace chamber!
An incorrect change of
the burner settings may change the gas/air ratio
and lead to unsafe operating conditions. CO is
odourless and poisonous!
ZAI
5
The air slide is open on deliv-
ery. Only close the air slide if
the burner flame is not stable.
ZMI
5
Set the pressure regulators for the gas and air
supply pressures to the maximum admissible
values, whereby the gas and air supply pressures
should be identical.
p
Gas
0
p
Air
0
6
Adjust the burn-
er pressures for
gas and air on
the adjusting
cocks upstream
of the ZMI.
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▷
The air inlet pressure must always be higher than
the gas inlet pressure: operating characteristic
diagrams – see www.docuthek.com.
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▷
Inlet pressure:
gas: 20 – 50 mbar (8 – 20 "WC),
air: 20 – 50 mbar (8 – 20 "WC).
ZKIH
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▷
Inlet pressure for air adjustment screw set at
the factory:
Gas
[mbar ("WC)]
Air
[mbar ("WC)]
Natural gas
20 (8)
20 (8)
Town gas
17 (6.8)
35 (13.8)
LPG
30 (12)
30 (12)
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▷
If the air inlet pressure cannot be set to the rec-
ommended value owing to the factory setting of
the air adjustment screw, readjust the air adjust-
ment screw.
I
Z
5
6
7
I
Z
5
6
7
Turn the air adjustment screw
to the left to increase the air
flow. Turn the air adjustment
screw to the right to reduce
the air flow.
8
Replace seal and cover and screw into place.
