Maintenance; Cleaning The Heat Exchanger, Burner And Condensate Trap - Buderus Logamax plus GB142-24 Installation And Servicing Instructions

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Maintenance

13 Maintenance
Switch off the heating system using the main switch.
Close the gas shut-off valve.
Remove the casing.
13.1 Cleaning the heat exchanger, burner
and condensate trap
CAUTION
To avoid a short circuit.
– Do not spray the cleaning agent onto the
burner, the hot surface ignitor, the
ionization electrode or other electric
components.
Dismantle the hot surface ignitor and the ionization
electrode.
Loosen the fastening nuts (fig. 37, pos. 1).
Remove the earth cable (fig. 37, pos. 2).
Remove the retaining plate.
Pull the hot surface ignitor (fig. 37, pos. 3) and the
ionization electrode (fig. 37, pos. 4) out of the heat
exchanger.
Loosen the threaded connection to the gas control
valve (fig. 38, pos. 1) and pull the plug (fig. 38,
pos. 2) from the gas valve terminal block.
Pull the plug from the fan unit (fig. 38, pos. 3).
Loosen both sets of retaining clips (fig. 38, pos. 4
and 5) of the burner cover and remove the burner
cover with the fan unit and the gas burner fitting
(fig. 39, pos. 1). Then remove the gas/air distributor
plate (fig. 39, pos. 2), the orifice plate (fig. 39, pos. 3)
and the burner (fig. 39, pos. 4).
Clean the gas/air distributor plate, the orifice plate
(GB142-24 and GB142-30 only) and the burner using
compressed air.
We reserve the right to make any changes due to technical modifications!
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Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
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Fig. 37 Removing the hot surface ignitor and the ionization
electrode
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Fig. 38 Removing the connections
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Fig. 39 Cleaning the burner cover, gas/air distributor plate,
orifice plate and burner
Buderus Hydronic Systems • http://www.buderus.net
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