Fujitsu Waterstage DHW Series - Maintenance; Regular Checks; Outdoor Unit Checks; Refrigeration Circuit Check

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 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 lling operation and a pressure increase are
required, check what type of uid was used initially
(when in doubt, contact your installer).
- If frequent rells are required it is absolutely essential
that you check for any leaks.
The frequent addition of water risks scaling the
exchanger and a󰀨ects its performance and lifespan.
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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 ow.
• 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 certicate 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 conguration / option
Waterstage / OPERATING INSTRUCTIONS / 2010 - EN