Checking The Ionization Electrode; Short Circuit - Buderus Logamax plus GB162-80 kW Service Instructions Manual

1
 Select the µA DC range on the multimeter. The multimeter
must have a resolution of at least 1µA [1].
 Connect the multimeter to the ionization circuit in series [2].
 Switch on the power supply to the heating system, see
section 79.
 Put the boiler in service mode, see section 21.
 During service mode, adjust the capacity to [l/2/5] = 25 %
with an 80-kW boiler or [l/2/0] = 20 % with a 100-kW boiler.
 Check that the ionization current is at least 3 µA (microam-
peres) during service mode, operating code [-/a/\].
The actual value in practice is 5 - 40 µA.
 Switch off the power supply to the heating system, see
section 72.
 Remove the multimeter.
 Connect the plug of the ionization electrode.
 Close the boiler door as instructed in section 77.
 Switch on the power supply to the heating system, see
section 79.
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
2
section 105 Checking the ionization electrode;
short circuit
 Switch off the power supply to the heating system, see
section 72.
 Open the boiler door as instructed in section 73.
3
1
 Disconnect the plug and socket connection of the ionization
electrode [1].
 Set the multimeter to "Measure resistance" [2].
 Measure the ionization electrode to ground to make sure that
there is no short circuit between the ionization electrode and
ground. The electrical resistance between the ionization elec-
trode and ground must be infinite [3].
 Attach the plug of the ionization electrode in reverse order.
 Close the boiler door as instructed in section 77.
 Switch on the power supply to the heating system, see
section 79.
Actions 7
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77