Installation and maintenance instructions ecoCRAFT 0020055744_08
38
8.10 Cleaning
the
burner
d
Danger!
Danger of personal injury and material damage!
Shut off the gas supply before dismantling the
burner, as otherwise gas can escape without
control.
h
Note
The burner must be cleaned once a year. It will
be necessary to dismantle the complete burner/
blower unit to do this.
9
1
6
2
3
5
8
4
7
Fig. 8.6 Dismantling the burner
• Remove the front casing.
• Hinge the electronic box down.
• Unfasten the connections on the gas fitting
(
4
, Fig. 8.6) and on the blower (
1
, Fig. 8.6).
• Unfasten the earthing conductor (8, Fig. 8.6).
• Disconnect the plugs on the ignition electrode
(
7
, Fig. 8.6) and the ionisation/monitoring electrode
(
6
, Fig. 8.6).
• Disconnect the control hoses (
3
, Fig. 8.6) on the gas
valve and on the Venturi.
• Unfasten the four screws between the Venturi and the
supply air silencer or HT pipe (
2
, Fig. 8.6).
• Lay the supply air silencer with 87° HT elbow careful-
ly to one side.
• Unfasten the four M5 screws (
5
, Fig. 8.6) on the gas
pipe (gas filter)/gas fitting.
• Unfasten the four M8 nuts (
9
, Fig. 8.6) on the heat ex-
changer.
• Withdraw the entire unit, consisting of manifold
flange, fan, Venturi and gas fitting, to the front and
lay it carefully to one side.
• Remove the gasket between the heat exchanger and
the manifold flange.
• Carefully withdraw the burner to the front.
a
Caution!
Risk of damage to the burner surface!
Take care that the burner surface does not get
damaged during cleaning!
• Take the burner outside the installation area and blow
it from the outside inwards with compressed air. If no
compressed air is available, the burner can also be
flushed out with water as an alternative. If the burner
is heavily contaminated it must be replaced.
• Re-assemble all the components in reverse order.
1
Fig. 8.7 Burner guide slots
2
Fig. 8.8 Front plate
h
Note
When inserting the burner, take care that it is
seated in the rear guide slots (1, Fig. 8.7) in the
heat exchanger and the front plate (2, Fig. 8.8)
is flush with the heat exchanger.
Note
Tighten the screws on the manifold evenly to
12 Nm.
8 Inspection and maintenance
