Viessmann AWT-AC 221.A04, Инструкция по установке и обслуживанию

Страница: 76 / 156

76
Starting the heat pump
!
Please note
Operation of the heat pump with
insufficient refrigerant results in
damage to the appliance.
■ Before starting the heat pump,
the internal unit and the refrig-
erant lines must be filled with
the specified amount of refrig-
erant and the refrigerant circuit
must have been checked for
leaks (see chapter "Filling
refrigerant lines and internal
unit" and "Checking the refrig-
erant circuit for tightness").
■ The external unit fill valves (see
chapter "Filling refrigerant lines
and internal unit") must be
open when the heat pump
starts.
The following sequence must be fol-
lowed:
1. Switch ON external unit voltage.
2. Wait 2 min.
3. Switch ON internal unit voltage.
4. Start internal unit at the ON/OFF
switch.
Note
If the internal unit is switched on before
the external unit or the waiting time is
shorter than 2 min, the fault message
"0A Fault external unit" appears.
Service instructions for
Vitotronic 200 heat pump control
unit.
Commissioning the system
Commissioning (configuration, parame-
ter settings and function checks) can be
carried out with or without the commis-
sioning assistant (see following chapter
and service instructions for the
"Vitotronic 200 heat pump control unit"). Note
The type and extent of the parameters
depend on the heat pump type, on the
selected system scheme and the acces-
sories employed.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5782 201 GB