Checking Electrical Connections Of The External Unit For Firm Seating; Closing The Heat Pump; Switch On The Power; Starting The Heat Pump - Viessmann Vitocal 200-S Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Checking electrical connections of the external unit for firm seating

Danger
Contact with 'live' components can lead to seri-
ous injury from electric current. Some compo-
nents on PCBs remain 'live' even after the
power supply has been switched off.
When working on the external unit, isolate the
■
system from the power supply, e.g. at a sepa-
rate MCB/fuse or a mains isolator. Check the
system is no longer 'live' and safeguard
against reconnection.
■ Prior to working on the appliance, wait at
least 4 min until the voltage has completely
dropped out.

Closing the heat pump

See page 41.

Switch ON the power

Switching on the mains power at the main MCB/fuse.

Starting the heat pump

!
Please note
Operating the appliance with insufficient refriger-
ant results in appliance damage.
Before starting the appliance, the internal unit
■
and the refrigerant lines must be charged with
the indicated amount of refrigerant: See chap-
ter "Charging the refrigerant lines and internal
unit".
■ The refrigerant circuit must be checked for
tightness: See chapter "Checking the refriger-
ant circuit for tightness".
The fill valves on the external unit must be
■
open when the appliance is switched on: See
chapter "Charging the refrigerant lines and
internal unit".
Follow the sequence shown
1. Switch ON external unit voltage.

Commissioning the system

Commissioning (configuration, parameter settings and
function check) can be carried out with or without the
commissioning wizard (see following chapter and serv-
ice instructions for the heat pump control unit).
50
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.
"Vitotronic 200" service instructions
Note
The type and extent of the parameters depend on the
appliance type, on the selected system scheme and
the accessories employed.