Switching Off The Heating System - Viessmann VITOTRONIC 100 Operating Instructions For The System User

Switching on and off

Switching off the heating system

With frost protection monitoring
At the Vitotronic 300-K, select the "Standby mode"
operating program for every heating circuit.
■ No central heating
■ No DHW heating
Frost protection for the heating circuits and the DHW
■
cylinder is active.
Extended menu
1.
2. "Heating"
3. Select the heating circuit if required (see page 16).
4. "Heating program"
5. "Standby mode" (frost protection monitoring)
Note
The circulation pumps are briefly started every 24
hours to prevent them from seizing up.
Ending the "Standby mode" operating program
Select another operating program.
Without frost protection monitoring (shutdown)
1. Turn off the ON/OFF switches at all Vitotronic 100
and Vitotronic 300-K (see chapter "Controls").
2. Close the gas shut-off valve.
3. Isolate the heating system from its main power
supply, e.g. at the separate MCB/fuse or at a
mains isolator.
4. If outside temperatures below 3 °C are expected,
please take appropriate measures to protect the
heating system from frost. If necessary, contact
your contractor.
Switching on the heating system
1. Check the heating system pressure at the
pressure gauge. The system pressure is too low if
the indicator points to the area below 1.0 bar or is
below the red band. In this case, top up with water
or notify your contractor.
34
Switching off individual boilers at the respective
Vitotronic 100
Press the following buttons:
1. for settings; "
2. OK to confirm; "
3. OK to confirm; "
4. until " " flashes.
5. OK to confirm.
Note
The circulation pumps are briefly started every 24
hours to prevent them from seizing up.
Ending the "Standby mode" operating program
Select another operating program.
Information on prolonged shutdown
Circulation pumps may seize up as they are not
■
being supplied with power.
■ Vitotronic 300-K:
It may be necessary to reset the date and time (see
page 27).
2. Check that the vents in the installation room are
open and unrestricted.
Note
With open flue operation, the combustion air is
drawn from the installation room.
3. Gas boilers: Open the gas shut-off valve.
Oil boilers: Open the shut-off valves in the oil lines
(at the oil tank and filter).
" flashes.
" flashes.
" flashes.