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▶ Remove the burner cover with the gas/air unit ( fig. 85).
Fig. 85 Removing the burner cover with the gas/air unit
12.3.3 Remove the burner and the burner seal
▶ Remove the burner seal [1] and replace it if necessary.
▶ Remove the burner plate [2] and clean it on all sides using
compressed air or a soft brush.
When re-installing the burner plate make sure that the notch is on the
right-hand side ( fig. 86, detailed picture).
1
2
Fig. 86 Removing the burner plate and the burner seal
12.3.4 Checking ignition unit
DANGER:
▶ Close the gas valve prior to working on components
in contact with gas.
▶ Check for gas tightness after carrying out work on
components in contact with gas.
NOTICE
The glow ignitor is fragile.
▶ Handle with care.
Logamax plus GB162-L.B. 80 kW / 100 kW – 6720645916 (2014/10)
6720645916-84.1N
▶ Check the individual components of the ignition unit ( fig. 88) for
wear or contamination ( fig. 87).
▶ If required, replace the ionization electrode and/or glow ignitor.
▶ After checking or replacing the ionization electrode and/or the glow
ignitor fit a new cover plate and rubber seal.
Fig. 87 Checking the ionization electrode
6720645916-85.1N
Fig. 88 Replacing the ignition unit
[1]
[2]
[3]
[4]
[5]
NOTICE
If the seat of the cover plate leaks, the seal can burn
away.
▶ Check the cover plate for tightness.
NOTICE
Since the effectiveness of the seals in the ignition unit is
reduced, the gas condensing boiler may become
damaged.
▶ The rubber seal ( fig. 88, [3]) and the cover plate
with seal ( fig. 88, [4]) need to be replaced every
4 years.
1
glow ignitor
Ionization electrode
Rubber seal
Cover plate with seal
Nut
12
Maintenance
7 746 800 040-128.2TD
2
3
4
5
5
6720615405-035.1TD
45
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