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This section must be brought to the installer’s attention,
highlighting the tasks to maintain proper system operation;
The installer is also obligated to inform the user that failure
to take care of and service this appliance could cause
malfunctions.
It is advisable to follow scheduled annual system
maintenance for the following reasons:
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- to keep a high level of working safety;
- to keep the exhaust emission levels low;
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serviced by a competent person.
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operation and the possible presence of water leakage
of all the air purge valves present in the appliance.
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nearby.
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valve before performing any maintenance operations
The box below shows the operations to do at every
maintenance session.
17 - MAINTENANCE
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1.- Make sure there are no gas leaks in the system
following the approved tightness testing procedures,
conforming to the national standards in force.
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exhaust ducts are in good conditions
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have obstructions, signs of corrosion, physical damage,
water spots or signs of rust.
2. - Make sure the externally assembled intake grids and
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17.1.3 - Checking the system water
pressure
1.- Make sure the system is full of water and under
pressure as shown in section 18 technical features.
2.- Make sure there are no leaks in the hydraulic
connections.
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leaks. Continuously adding new water leads to
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decreasing heat exchange and causing the heat
exchanger to overheat. All of this leads to failures and
reduced appliance life.
17.1.4 - Checking the ignition and
detection electrodes
1.- Remove the burner fan unit (as shown in section 17.3).
2.- Clean any operating material build-up from the
electrodes.
3.- Make sure the electrodes are in the correct position as
shown in section 17.5.
17.2 - Disassembling the casing and
accessing the inner components
To disassemble the casing, proceed as follows (refer to
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1.- Lift cover “A”;
2.- Unscrew screws “B”;
3.- Lower front casing “C”;
4.- Remove lower casing “E”;
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6.- Unscrew screw “G”;
7.- Lift cover “F”;
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- Make sure there are no gas leaks
(Follow section 17.1.1.);
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(Follow section 17.1.2);
- Make sure the system water pressure is correct
(Follow section 17.1.3.);
- Check the ignition and detection electrodes
(Follow section 17.1.4.);
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the heat insulators are in good condition
(Follow section 17.4.);
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(Follow section 17.6.);
- Clean the condensate drain system
(Follow section 17.7.).
- Check appliance performance
(Follow section 17.13.);
