Checking The Thermal Insulation On The Swaged Connections 15. Checking The Electrical Connections Of The External Unit For Firm Seating; Starting The Heat Pump - Viessmann Vitocal 200-S Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
Checking the electrical connections of the external unit for firm
seating
Danger
Contact with 'live' components
can result in severe injuries.
Capacitors remain 'live' after the
power supply has been switched
OFF.

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 refriger-
ant lines must be filled with the
specified amount of refrigerant
and the refrigerant circuit must
have been checked for leaks (see
chapter "Filling internal unit and
refrigerant lines" and "Checking
refrigerant circuit for leaks").
The following sequence must be fol-
lowed:
1. Switch ON external unit voltage.
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).
74
Wait at least 4 min, until the
capacitors have discharged,
before starting work on the exter-
nal unit.
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.
Note
Type and extent of parameters depend
on the heat pump type, on the selected
system scheme and the accessories
employed.
(cont.)