Logano G334X Installation And Service Instructions Manual - page 29
9
Boiler inspection and maintenance
Logano G334X – 6 720 811 237 (2014/05)
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9.4
Preparing the boiler for cleaning
▶ Shut down the heating system (
Chapter 7.1, page 27).
Removing the front wall of the boiler (
Fig. 38):
▶ Unscrew the locking screws [2] at the bottom of the front wall of the
boiler.
▶ Tilt the front wall of the boiler [1] forward and lift it out.
Fig. 38 Removing the front wall of the boiler
[1]
Front wall of boiler
[2]
Locking screws
▶ Turn the gas valve ON/OFF knob [1] clockwise to the OFF position.
Do not use excessive force.
Fig. 39 Gas valve in OFF position
[1]
ON/OFF knob (OFF position)
9.5
Cleaning the boiler
The boiler can be cleaned with brushes and/or by wet cleaning. Cleaning
tools are available as accessories.
9.5.1
Cleaning the boiler with brushes (mechanical cleaning)
Remove burner:
▶ Disconnect the heating system from the power supply.
▶ Close the gas main shutoff valve.
▶ Disconnect pilot gas line [6] from the gas valve [8].
▶ Disconnect high-tension ignition lead [3] from the burner controller.
▶ Tie gas line [2] with wire or cord (secure).
▶ Loosen the retaining screw [1] on the gas feed line.
▶ Check the gasket for damage. Replace damaged gasket. Keep the
gasket in a safe place.
▶ Label wires of flame roll-out safety shutoff switch [4] and disconnect
them from the switch [5].
DANGER: Risk of fatal injury from electric current when
appliance is opened up!
▶ Before opening the boiler:
Disconnect heating system from the power supply
via the ON/OFF switch or the appropriate building
fuse.
▶ Take measures to ensure that the heating system
cannot be accidentally reactivated.
WARNING: Risk of fire from foreign objects!
Foreign objects between the main orifice and burner rod
inlet opening can cause a fire.
▶ Ensure that there are no objects at this location.
▶ When working on an open boiler: Secure appliance
components and cables to prevent them from getting
between the openings during operation.
DANGER: Risk of fatal injury from explosion of
flammable gases!
▶ Operations on the gas lines may be carried out only
by properly licensed gas contractors.
▶ Wait five (5) minutes until all gas has dissipated.
Check whether there is any smell of gas, including at
floor level. If you smell gas: STOP!
Check that the gas shutoff valve is closed. Repeat the
odor test. If you do not smell gas, proceed to the next
step.
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6 720 810 547-35.1T
DANGER: Danger to life from electric shock!
If cables are connected incorrectly, the system may not
operate correctly, with possibly dangerous
consequences.
▶ When performing maintenance, label all connection
cables before disconnecting them.
▶ Always check that the heating system is working
properly after carrying out any maintenance work.
DANGER: Risk of fatal injury from electric current when
appliance is opened up!
▶ Before opening the boiler:
Disconnect the heating system from the electrical
power supply by means of the emergency shutoff
switch or the appropriate building fuse.
▶ It is not sufficient just to switch off the controller.
▶ Take measures to ensure that the heating system
cannot be accidentally reactivated.
7 747 014 639-30.2T
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