Start-Up/Shutdown Switching The Power Supply On/Off; Starting The Heat Pump; Shutting Down The Heat Pump - Viessmann PLC VITOCAL 350-HT PRO Operating Instructions For The System User

Start-up/shutdown
Switching the power supply on/off

Starting the heat pump

1. Switch ON the power supply, e.g. at a separate
MCB/fuse or a mains isolator.
2. Turn on the mains isolator.
The main side is shown on the display after a short
time.
3. Log in with your user name and password.
You are logged in.

Shutting down the heat pump

Without interrupting the power supply
The actual values of the sensors can still be scanned
■
■ Remote diagnosis/maintenance is possible
■ Frost protection remains active
1. Log in with your user name and password.
You are logged in.
2. Tap the button.
The heat pump is switched off.
Symbol is red.
Shutdown (without frost protection)
Information on shutting down for longer periods
■ No frost protection
The circulation pumps may seize up.
■
The date and time may have to be reset.
■
Operate the system's mains isolator.
The power supply is interrupted.
!
Please note
The equipment may be damaged if there is no
frost protection.
Take appropriate measures at outside tempera-
tures below 3 °C to protect the heat pump and
your heating system from frost. If necessary,
contact your heating contractor.
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4. Tap the button.
The heat pump is switched on.
Symbol is green.
Note
The oil sump heaters must be in operation for 6 hours
before a compressor start.