29
ENGLISH
MAINTENANCE AND CLEANING
Periodic maintenance is an "obligation" required by the law and is essential
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It allows for the reduction of consumption, polluting emissions and keeping
the product reliable over time.
Before starting maintenance operations:
- close the fuel and water taps of the heating and domestic hot water
system.
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comply with prescriptions of current regulations, it is necessary to render
the appliance to systematic checks at regular intervals. When carrying out
maintenance work, observe the instructions given in the
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chapter.
This normally means the following tasks:
- removing any oxidation from the burner
- removing any scale from the heat exchangers
- checking electrodes
- checking and cleaning the drainage pipes
- checking the external appearance of the boiler
- checking the ignition, switch-off and operation of the appliance, in both
domestic water mode and heating mode
- checking the seal on the couplings, gas and water and condensate
connecting pipes
- checking the gas consumption at maximum and minimum output
- checking the position of the ignition electrode
- checking the position of the detector electrode/ionisation probe (see
specific paragraph)
- checking the gas failure safety device.
b
After carrying out the maintenance operations the analysis of the
combustion products needs to be carried out to make sure it is
operating correctly.
b
If, after replacing the electronic board or having carried out
maintenance on the detector electrode or the burner, the analysis of
the combustion products returns values outside tolerances, it might
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described in the section
"4.17 Combustion check"
Note:
When replacing the electrode there could be slight variations
of the combustion parameters that fall within nominal values after a
few hours of operation.
b
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(e.g. petrol, alcohol, etc.).
b
Do not clean panels, painted parts and plastic parts with paint thinner.
b
Panel cleaning must be carried out only with soapy water.
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- Switch off the electrical supply by turning the system's main switch to
"Off".
- Close the gas shut-off valve.
-
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casing".
- Disconnect the connecting cables of the electrodes.
- Disconnect the power cables of the fan.
- Take out the clip (
A
) of the mixer.
- Loosen the nut of the gas train (
B
).
- Take out and turn the gas train.
-
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C
) that fix the combustion unit.
- Take out the air/gas conveyor assembly including the fan and mixer,
being careful not to damage the insulating panel and the electrodes.
-
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the heat exchanger and connect a temporary collecting pipe. At this point
proceed with the heat exchanger cleaning operations.
- Vacuum out any dirt residues inside the heat exchanger, being careful
NOT to damage the retarder insulating panel.
- Clean the coils of the heat exchanger with a soft bristled brush.
b
DO NOT USE METAL BRUSHES THAT COULD DAMAGE THE
COMPONENTS.
- Clean the spaces between the coils using 0.4 mm thick blade, also
available in a kit.
- Vacuum away any residues produced by the cleaning
-
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panel
- Make sure the retarder insulation panel is undamaged and replace it if
necessary following the relative procedure.
- Once the cleaning operations are finished, carefully reassemble all the
components, following the above instructions in the reverse order.
- To close the fixing nuts of the air/gas conveyor assembly, use a tightening
torque of 8 Nm.
- Turn the power and gas feeding to the boiler back on.
b
If there are obstinate combustion products on the surface of the heat
exchanger, clean by spraying natural white vinegar, being careful
NOT to damage the retarder insulating panel.
- Leave it to work for a few minutes
- Clean the coils of the heat exchanger with a soft bristled brush.
b
DO NOT USE METAL BRUSHES THAT COULD DAMAGE THE
COMPONENTS.
-
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panel
- Turn the power and gas feeding to the boiler back on.
Cleaning the burner
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:
- Switch off the electrical supply by turning the system's main switch to
"Off".
- Close the gas shut-off valve.
-
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casing".
- Disconnect the connecting cables of the electrodes.
- Disconnect the power cables of the fan.
- Take out the clip (
A
) of the mixer.
- Loosen the nut of the gas train (
B
).
- Take out and turn the gas train.
-
5HPRYHWKHQXWV
C
) that fix the combustion unit
- Take out the air/gas conveyor assembly including the fan and mixer,
being careful not to damage the ceramic panel and the electrodes. At this
point proceed with the burner cleaning operations.
- Clean the burner with a soft bristled brush, being careful not to damage
the insulating panel and the electrodes.
-
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COMPONENTS.
- Check that the burner insulating panel and the sealing gasket are
undamaged and replace them if necessary, following the relative
procedure.
- Once the cleaning operations are finished, carefully reassemble all the
components, following the above instructions in the reverse order.
- To close the fixing nuts of the air/gas conveyor assembly, use a tightening
torque of 8 Nm.
- Turn the power and gas feeding to the boiler back on.
Cleaning the siphon
-
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- Clean the siphon, it can be washed with detergent water.
-
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attachment. Never use metal or pointed tools to remove deposits or
residues inside the device, which could damage it.
-
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device, taking care to fit the components with due care.
b
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EH ¿OOHG ZLWK ZDWHU
"3.19 Condensate siphon") before starting the
boiler again. At the end of the maintenance operations on the siphon
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regime for a few minutes and check there are no leaks from the entire
condensate evacuation line.
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