Checking The Ionization Circuit; Ground Lead; Checking The Gas Valve; Power Supply Plug; Checking The Gas Valve; Activation - Buderus Logamax plus GB162-80 kW Service Instructions Manual

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 Check the ionization electrode for signs of wear [2], damage
[3] or contamination [4].
 Replace the ionization electrode if necessary.
 Close the boiler door as instructed in section 77.
 Switch on the power supply to the heating system, see
section 79.
section 108 Checking the ionization circuit;
ground lead
 Switch off the power supply to the heating system, see
section 72.
 Open the boiler door as instructed in section 73.
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 Check that the ground lead of the ionization circuit [1] has
been installed correctly.
Note: The upper cable is the ground lead of the heat exchanger
pump, the lower cable [1] is the ground lead of the ionization cir-
cuit.
 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!
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section 109 Checking the gas valve;
power supply plug
 Switch off the power supply to the heating system, see
section 72.
 Open the boiler door as instructed in section 73.
 Check that the power supply plug [1] has been attached cor-
rectly to the gas valve.
 Close the boiler door as instructed in section 77.
 Switch on the power supply to the heating system, see
section 79.
section 110 Checking the gas valve;
activation
 Open the boiler door as instructed in section 73.
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 Set the multimeter to "Measure AC voltage" [1].
Minimum measuring range 40 VAC.
 Put the boiler in flue gas test mode, see section 20.
 Check that the gas valve is activated:
[0/l/\|
While operating code
must be available on the two contacts of the right-hand coil
[2] and on the two contacts of the left-hand coil [3] of the gas
valve power supply plug.
 Stop the flue gas test as instructed in section 20.
 Close the boiler door as instructed in section 77.
Actions
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is displayed, approx. 24 VAC
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