- 78 -
►
Checking the outdoor unit
-Remove any dust from the exchanger, if necessary,
while making sure not to damage the blades.
-Straighten the blades using a comb.
-
Check that there is nothing blocking the air flow.
-Check the fan.
-Verify that condensate drain is not obstructed.
• Checking the refrigeration circuit
If the amount of refrigerant in the system exceeds
2kg (models > 10kW), the refrigeration circuit must be
checked annually by an approved engineer (they must
have a certificate of competence for the handling of
refrigerants).
-Check there are no leaks (connections, valves…).
►
Electrical checks
-Check the connections and re-tighten if necessary.
-Check the state of the cables and plates.
Maintenance of the installation
Before any maintenance operation,
ensure that the general power supply is switched off.
OFF
ON
1
2
U0629273-A
►
Hydraulic checks
If frequent refills are required it is absolutely
essential that you check for any leaks. If
refilling and a pressure reset are necessary,
check what type of fluid was used initially.
Recommended filling pressure: between 1 and 2 bar
(the exact filling pressure is determined by the water
pressure in the installation).
Every year,
-
Check the expansion circuit pressure (pre-inflation of
1 bar) and the correct operation of the safety valve.
If the installation is fitted with a hot water tank:
-Check the safety valve on the cold water supply inlet.
Make it operate as advised by the manufacturer.
-
Check the back flow preventer.
►
Emptying the hydraulic unit
-Remove the front panel of the hydraulic unit.
-
Open the drain plug,
-
Check that the hydraulic unit's bleeder valve opens
automatically,
-
Open the installation’s bleeder valve(s).
►
Distribution valve
If the installation is fitted with a hot water tank.
Ensure the distribution valve is fitted in the correct
direction.
Channel
AB
: Outlet to the hydraulic unit.
Channel
A
open: Return from DHW tank.
Channel
B
open: Return from the heating circuit.
Other maintenance
Waterstage / Installation / 2011 - EN
Summary of Contents for Waterstage WOYK150LJL
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