Viessmann AWT 221.A04, Инструкции по установке и обслуживанию для подрядчиков

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!
Please note
Commissioning is weather-dependent. At out-
side temperatures below 0 °C, moisture can
condense and sublimate in the refrigerant lines.
If water droplets and/or ice particles enter the
compressor, they may cause damage to the
appliance.
In the case of high relative humidity or outside
temperatures below 0 °C, please observe the
following:
■ Use nitrogen 5.0 for the pressure test.
■ During evacuation, take suitable steps to keep
the surface temperature of the refrigerant lines
above 0 °C.
Danger
Direct contact with refrigerant can be harmful to
skin.
Wear safety goggles and protective gloves when
working on the refrigerant circuit.
!
Please note
Escaping refrigerant will cause environmental
pollution.
■ Before evacuating the refrigerant lines and the
internal unit, check all connections for tight-
ness with leak detection spray.
■ Keep the valves on the external unit shut, and
fill the system with nitrogen through the serv-
ice valve. The test pressure is the max. per-
missible operating pressure.
A
P
C
K
L
M
Q
H
F
D
E
G
N
B
E
Fig. 48 Example type AWT/AWT-AC 221.A07
A
Indoor unit
B
Hot gas line
C
Outdoor unit
D
Service valve (Schrader valve)
In type AWT/AWT-AC 221.A05 and
AWT/AWT-AC 221.A07 the service valve is located
at the connection of the liquid line.
E
Fill valve
Commissioning, inspection, maintenance
Evacuating the refrigerant lines and indoor unit
5776 028 GB