GB-4
D
GB
F
NL
I
E
+
=
+
=
=
1
2
4
I
Z
3
5
6
7
8
+
=
+
=
=
1
2
4
I
Z
3
5
6
7
8
Natural gas
LPG
Town gas
▷
▷
For operation with town gas, screw the retaining
screw back in without the nozzle insert – do not
store the nozzle insert in the connection box:
danger of short-circuits.
9
After conversion to another type of gas, adjust
the air volume – see page 7 (Commissioning).
Installation
DANGER
Risk of explosion!
Ensure the connection is gas-
tight.
▷
▷
Install the pilot burner so that reliable ignition of
the main burner is guaranteed.
▷
▷
Attach the pilot burner securely.
▷
▷
We recommend that a filter be installed in the
gas and air supply line respectively.
ZAI
▷
▷
Inlet pressure:
natural gas: max. 35 mbar (14 "WC),
town gas: max. 30 mbar (12 "WC),
LPG: max. 60 mbar (23 "WC).
▷
▷
In the case of higher inlet pressures, insert a gas
restrictor orifice.
▷
▷
Ensure air intake is not obstructed.
▷
▷
The ZAI has bare electrodes and no protective
flame tube. Protective tube, see page 10 (Acces-
WARNING
Risk of injury!
Observe the projecting ionization
electrode.
≈
2 mm
1
2
9
8
Attach the
burner using the
two holes on
the fastening
lug.
Connect the
pilot gas line
with 8 mm
tube.
▷
▷
When tightening the cap screw
9
, ensure that
the cone olive
8
is correctly positioned – lubricate
the cone olive.
▷
▷
ZAI flow rate curve – see www.docuthek.com
ZMI
▷
▷
Recommended inlet pressures:
gas: 50 – 60 mbar (19.7 – 23.6 "WC),
air: 50 – 60 mbar (19.7 – 23.6 "WC).
▷
▷
Install pressure regulators and adjusting cocks
in the air and gas supply lines upstream of the
burner so that the air and gas pressures can
be adjusted.
CAUTION
Burner fault!
If used as pilot burner, the gas and
air pressures must be higher that the connection
pressures of the main burner.
