Viessmann 7424689, Инструкция по установке и обслуживанию

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69
2. Top up the required amount of refrig-
erant (see following table).
!
Please note
Refrigerant must not be
allowed to enter the atmos-
phere.
Draw refrigerant out of the fill-
ing hoses and pressure gauge
set into the system.
3. Close valves on the pressure gauge
set.
4. Unscrew the end of the filling hose
from the external unit service valve.
5. Fit the union nut with copper cap to
the service valve of the external unit:
torque 15 to 20 Nm.
6. Unscrew the cap on the external unit
filler valve, open the filler valve and
screw the cap back on again.
7. Enter the amount of refrigerant top-
ped up on the type plate and in the
operator's log.
Information for systems with a fill-
ing capacity of 3.0 kg R410A or
more:
■ The operator's log must be main-
tained.
■ An annual tightness test is manda-
tory.
Refrigerant fill volume per metre of
line length (for line lengths
from 12 m to 30 m)
Type AWB/AWB-AC
R410A in g/m
201.A04 20
201.A07 60
201.A10 60
201.A13 60
Checking the refrigerant circuit for leaks
Danger
R410A is a non-poisonous gas
that displaces air. Uncontrolled
escape of refrigerant R410A in
enclosed spaces can result in dif-
ficulties in breathing and suffoca-
tion.
■ Ensure adequate ventilation in
enclosed rooms.
■ Observe and adhere to regula-
tions and guidelines about han-
dling refrigerant.
Danger
Direct contact with refrigerant
can harm skin.
Wear safety goggles and protec-
tive gloves when working on the
refrigerant circuit.
Check all connections for refrigerant
leaks:
■ All swaged connections of the refrig-
erant lines between the internal and
the external unit.
■ Solder joints and threaded fittings of
the refrigerant lines in the internal and
external units.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5601 429 GB
Service