GB-5
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.
▷
Arrange the adjustment and commissioning of
the burner with the system operator or manu-
facturer.
▷
Check the entire system, upstream devices and
electrical connections.
▷
Pre-purge the furnace chamber with air before
every ignition attempt.
DANGER
Risk of explosion!
Fill the gas line to the burner
carefully and correctly with gas and vent it safely
into the open air – do not discharge the test volume
into the furnace chamber.
▷
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.
▷
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.
Switch on the system.
Open the manual valve.
Ignite the burner via the automatic burner control
unit.
4
Adjust the burner.
▷
Set the ionization current by adjusting the air
volume.
▷
The ionization current must be at least 5 µA and
must not vary.
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!
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 burner
pressures for gas
and air on the
adjusting cocks
upstream of the
ZMI or ZMIC.
▷
Gas and air pressures: flow rate curves – see
www.docuthek.com.
ZMI
▷
Inlet pressure:
gas: up to 80 mbar (up to 32 "WC),
air: up to 120 mbar (up to 47 "WC).
ZMIC
▷
Inlet pressure:
gas: up to 80 mbar (up to 32 "WC),
air: up to 120 mbar (up to 47 "WC).
Maintenance
▷
We recommend an annual function check.
DANGER
Electric shocks can be fatal!
Before working
on possible live components, ensure the unit is
disconnected from the power supply.
Risk of burning!
Dismantled burner components
can be hot due to outflowing flue gases.
Risk of explosion and poisoning in case of
burner adjustment with an air deficiency!
Ad-
just 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.
Check the ionization and ignition cables.
Measure the ionization current.
▷
The ionization current must be at least 5 µA and
must not vary.
Disconnect the system from the electrical power
supply.
4
Shut off the gas and air supply – do not change
the restrictor settings.
5
Check the nozzles for dirt.
Replacing the electrode
ZMI 16
ZMIC 28
ZMI 25
7
6
7
