Switching On And Off Shutting Down The Heat Pump; With Frost Protection; Without Frost Protection Monitoring (Shutting Down The System); Starting The Heat Pump - Viessmann VITOCAL 150-A Operating Instructions For The System User

Shutting down the heat pump

With frost protection

You have the options of switching off the individual
heating/cooling circuits, or the complete system.
Tap the following buttons:
1.
2. "Switch on/off"
3. You wish to switch off the heating/cooling circuits
individually: Tap
You wish to switch off the DHW heating: Tap
"Off".
You wish to switch off the entire system: Tap
"Off".

Without frost protection monitoring (shutting down the system)

You wish to shut down the system without frost protec-
tion monitoring.
Turn off the ON/OFF switch: See chapter "Position of
the ON/OFF switch".
■ No room heating
■ No room cooling
No DHW heating
■
Frost protection for the heat generator and the DHW
■
cylinder is not enabled.
!
Please note
If outside temperatures below 3 °C are expec-
ted, take appropriate measures to protect the
heat pump and the heating system from frost.
Contact your heating contractor.

Starting the heat pump

Turn on the ON/OFF switch: See chapter "Position of
the ON/OFF switch".
After a short while, the home screen is shown on the
■
display.
■ The Lightguide is illuminated constantly.
Your heat pump and remote control units (if available)
are now ready for operation.

Position of the ON/OFF switch

Wall mounted indoor unit

ON/OFF switch A is located on the underside of the
indoor unit.
for "Standby mode".
Note
■ All circulation pumps connected to the control unit
are briefly started every 24 hours to prevent them
from seizing up.
The diverter valves are switched over at regular
■
intervals.
for
for
Note
As they are not being supplied with power, the circu-
■
lation pumps and diverter valves may seize up.
■ If your system has been shut down for a prolonged
period, you must reset the "Time" and "Date": See
page 36.
Switching on and off
45