Regular Checks; Checking The Outdoor Unit; Hot Water Tank - Fujitsu Waterstage DHW Series Operating Instructions Manual

 Maintenance
In order to ensure that your appliance operates correctly
for many years, the maintenance operations described
below are required at the start of each heating season .
They are generally carried out as part of a maintenance
contract .
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Regular checks

- Check the water pressure in the heating circuit
regularly (refer to the installer's recommended
pressure - between 1 and 2 bar)
- If a filling operation and a pressure increase are
required, check what type of fluid was used initially
(when in doubt, contact your installer) .
- If frequent refills are required it is absolutely essential
that you check for any leaks .
The frequent addition of water risks scaling the
exchanger and affects its performance and lifespan.
►

Checking the outdoor unit

Remove any dust from the exchanger, if necessary,
while making sure not to damage the blades .
Check that there is nothing blocking the air flow.
• Checking the refrigeration circuit
If the amount of refrigerant in the system exceeds 2kg
(models > 10 kW), the refrigeration circuit must be
checked annually by an approved engineer (they must
have a certificate of competence for the handling of
refrigerants) .
Consult your heating technician.
►

Hot water tank*

Maintenance on the tank must be carried out annually
(frequency may vary according to water hardness) .
Consult your heating technician.
* depending on configuration / option
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Waterstage / OPERATING INSTRUCTIONS / 2010 - EN