64
2. Recharge with the required amount of refrigerant:
54 g/m line length
!
Please note
Escaping refrigerant will cause environmen-
tal pollution.
Extract refrigerant from the fill hoses and
pressure gauge set.
3. Close the valves at the pressure gauge set.
4. Unscrew the caps from the shut-off valves of the
outdoor unit.
5. Open both shut-off valves. Refit caps.
6. Promptly undo the fill hose from the service valve
(Schrader valve) of the outdoor unit: The pressure
in the pipework must be greater than the ambient
pressure.
7. Fit the union nut with copper cap to the service
valve (Schrader valve) of the outdoor unit:
Torque 15 to 20 Nm
8. Enter the amount of refrigerant added on the type
plate.
Information for systems with a refrigerant charge
of 3.0 kg R410A or more:
■
The operator's log must be maintained.
■
Enter the amount of refrigerant added in the opera-
tor's log.
■
An annual leak test is mandatory.
Checking the refrigerant circuit for leaks
Danger
Naked flames can ignite escaping flammable
refrigerant (R32). This can lead to deflagration
and fire.
■
Do not solder when working on the refrigerant
circuit.
■
If flared connections are opened, replace
these flared connections.
■
Replace faulty components in their entirety.
Danger
The refrigerant is a non-poisonous gas that dis-
places air. Uncontrolled escape of refrigerant in
enclosed spaces can result in breathing difficul-
ties and suffocation.
■
Ensure adequate ventilation in enclosed
spaces.
■
Always observe regulations and guidelines on
handling this type of refrigerant.
Danger
Direct contact with refrigerant can be harmful to
skin.
Wear safety goggles and protective gloves when
working on the refrigerant circuit.
Check the connections for refrigerant leaks using a
leak detector:
■
All flared connections of the refrigerant lines between
the indoor and the outdoor unit
■
All brazed joints and threaded fittings of the refriger-
ant lines in the internal and external units
Repair any detected refrigerant leaks before commis-
sioning the system. After commissioning the system,
repeat leak test with the compressor running.
Leak detector information:
■
The leak detector must be suitable for the refrigerant.
■
Required sensitivity: At least 5 g/year
■
The leak detector must be calibrated in accordance
with the device manufacturer's instructions:
Operating instructions for leak detector
When checking for refrigerant leaks, observe the fol-
lowing:
■
Response time of the leak detector
■
Max. distance from test point
!
Please note
Refrigerant can escape when working on the
refrigerant circuit.
Work on the refrigerant circuit may only be car-
ried out by qualified personnel.
In accordance with Regulations EU 517/2014
and 2015/2067.
Commissioning, inspection, maintenance
Charging the refrigerant lines and indoor unit (cont.)
6199585
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