12.9 Check and clean heating block
12.8 Carry out functional test
12.7 Check the combustion air flue gas connection
6720813046-76.1N
2.
1.
ÿ Fill the condensate siphon with approx. ¼ l of water and reassemble [2].
WARNING: Risk of explosion from flammable gases.
Fig. 45 Measuring socket on the mixing device
gen.
ÿ Check all connections for correct assembly
ÿ Control pressure at maximum nominal heat output at the mixing device
<10,4 mbar
GC9000iW 50 H 23
ÿ No water on the ignition electrode, the monitor
<6,4 mbar
ÿ Clean the heating block if the measurement result is as follows:
Check the following points:
ÿ Set the hot water target temperature to the desired temperature
GC9000iW 30 E(B) 23
ÿ No steel brush required for mechanical cleaning
To clean the heating block, use Junkers burner seals, cleaning brush set and
cleaning knife, which are available as spare parts.
whether the device starts heating mode.
to use.
Inspection and Maintenance | 33
ÿ After inspection and maintenance, check whether the device is on
control pressure
<4,5 mbar
works flawlessly.
CAUTION: System damage due to short circuit.
check direction.
Use a flashlight and mirror when inspecting the heat block.
fen.
<5,5 mbar
ÿ Set the maximum boiler temperature to the required temperature (ÿ Chapter 8.2).
ing electrode or other electrical components.
ÿ Remove the cap from the pressure gauge and connect the pressure gauge
• Has the prescribed air/exhaust system been used?
device type
eat.
NOTICE: System damage due to incorrect cleaning.
• Have the implementation regulations contained in the relevant installation
instructions for the flue gas system been complied with?
GC9000iW 20 E(B) 23
Tab. 25 Check control pressure
If mechanical cleaning is required:
place.
ÿ Enter and check the heat request via the control unit,
GC9000iW 40 H 23
Figure 44 Condensate siphon
While the device is in operation, activate and check the heat request for heating and
hot water on the device controls (operating unit).
ÿ Open the gas tap.
ÿ Remove the cover of the test opening.
ÿ Clean the heating block if it is extremely dirty
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Cerapur GC9000iW
6720813052 (2016/10)
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