70
4.
Undo the caps from the fill valves of
the external unit. Open both fill valves
and refit the caps.
Note
Both fill valves must be open when
the appliance is switched on.
5.
Promptly undo the fill hose and shut-
off valve from the service valve of the
external unit.
6.
Fit the union nut with copper cap to
the service valve of the external unit:
Torque 15 to 20 Nm.
7.
Enter the amount of refrigerant top-
ped up on the type plate and in the
operator's log.
Information for systems with a
refrigerant charge of 3.0 kg R410A
or more:
■ The operator's log must be main-
tained.
■ An annual tightness test is manda-
tory.
Refrigerant charge per metre line
length (for line lengths from 12 to
30 m)
Type AWT-AC
R410A in g/m
241.A04
20
241.A07
60
241.A10
60
241.A13
60
241.B10
60
241.B13
60
Checking the refrigerant circuit for tightness
Danger
R410A is a non-poisonous gas
that displaces air. Uncontrolled
escape of refrigerant R410A in
enclosed spaces can result in
breathing difficulties and suffoca-
tion.
■ 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 protec-
tive gloves when working on the
refrigerant circuit.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5546 699 GB
