9
Boiler inspection and maintenance
Logano G234X – 6 720 811 233 (2017/02)
26
9.5
Cleaning the boiler
The boiler can be cleaned with brushes and/or by wet cleaning. Cleaning
equipment is available as an accessory by special order.
9.5.1
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.
▶ Secure gas line [2] with wire or cord.
▶ Loosen the union [1] on the gas supply line.
▶ Check the gasket for damage. Replace damaged gasket. Keep the
gasket in a safe place.
▶ Identify the connection cable for the flame roll-out safety shutoff
switch [4] and then disconnect it from the flame roll-out safety
shutoff switch [5].
▶ Disconnect connection lines to the gas valve [8].
Fig. 31 Removing the burner
[1]
Union on gas supply line
[2]
Gas line
[3]
High-tension ignition lead
[4]
Flame roll-out switch connection cable
[5]
Flame roll-out safety shutoff switch
[6]
Pilot gas line
[7]
Connection cable to the gas valve
[8]
Gas valve
▶ Loosen retaining nuts (
Fig. 32 [1]) on the burner shield.
▶ Pull the burner out straight.
▶ Make sure that the spacers [2] remain on the studs.
Fig. 32 Removing the burner
[1]
Retaining nuts
[2]
Studs with spacers
9.5.2
Cleaning the boiler with brushes (mechanical cleaning)
▶ Remove the boiler casing and thermal insulation; check for damage.
▶ Unscrew cleaning cover from the draft diverter.
▶ Cover control unit with foil to prevent entry of metal dust into the
control unit.
▶ Use cleaning brushes [1] to brush out hot gas flues.
▶ Clean combustion chamber and bottom panel.
▶ Screw cleaning cover into place and replace insulation.
▶ Install boiler cover.
Fig. 33 Cleaning the hot gas flues
[1]
Cleaning brush
[2]
Thermal insulation
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 appliance:
Disconnect the heating system from the power
supply completely via the ON/OFF 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.
6 720
8
06 02
8
-12.1T
1
2
3
4
5
6
7
8
2
1
6 720 806 028-13.1T
6 720 806 028-21.1T
2
1
Summary of Contents for G234X/38
Page 34: ...10 Logano G234X 6 720 811 233 2017 02 34 Notes...
Page 35: ...10 Logano G234X 6 720 811 233 2017 02 35 Notes...
Page 36: ......
