63
Note
■
The outdoor unit is pre-charged with refrigerant
R410A.
■
No additional charging is required for line lengths up
to 12 m.
■
For lengths of refrigerant lines, see page 24.
■
The system may only be recharged with refrigerant
R410A in a
liquid state
.
Danger
Direct contact with refrigerant can harm the skin.
Wear safety goggles and protective gloves when
working on the refrigerant circuit.
!
Please note
Recharging the system with refrigerant or evac-
uating the refrigerant can cause the condenser
to freeze up.
Flush the secondary side of the condenser with
water or drain it completely.
!
Please note
Mechanical stress will damage the connections.
For
all
connections, counterhold with a second
open-ended spanner.
Line lengths up to 12 m:
1.
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.
2.
Fit the union nut with copper cap to the service
valve (Schrader valve) of the outdoor unit: Torque
15 to 20 Nm
3.
Remove the caps from the shut-off valves of the
outdoor unit.
4.
Open both shut-off valves and refit the caps.
Line lengths 12 to 30 m:
1.
Connect the hose between the pressure gauge set
and refrigerant bottle.
Evacuate the hose and pressure gauge set.
2.
Recharge with the required amount of refrigerant:
See following table.
!
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.
Remove the caps from the shut-off valves of the
outdoor unit.
5.
Open both shut-off valves and refit the 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 recharged 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 maintained.
■
An annual tightness test is mandatory.
Refrigerant charge per metre line length (for line
lengths from 12 m to 30 m)
Type AWBT(-M)/AWBT(-M)-E/
AWBT(-M)-E-AC
R410A in g/m
221.C04
17
221.C06
17
221.C08
60
221.C10
28
221.C13
28
221.C16
28
Commissioning, inspection, maintenance
Charging the refrigerant lines and indoor unit
51
17 700 GB
