Viessmann VITOTRONIC 100 GC1B Operations Instructions download pdf (Page 13)

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Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating

Start-up/Shutdown

Stopping the Heating System

With frost protection monitoring

At the Vitotronic 300-K, select the heating program

“Standby mode” for every heating circuit.

H No central heating.

H No DHW heating.

H Frost protection for the heating circuits and the DHW

tank is active.

Extended menu

2. “Heating”

3. Select the heating circuit, if necessary (see page 14).

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 heating program “Standby mode”

Select another heating program.

Stopping individual boilers at the relevant Vitotronic 100

Press the following keys:

1. for settings; “ “ flashes.

2. OK to confirm; “9

“ flashes.

3. OK to confirm; “

“ flashes.

4. 

until “9“ flashes.

5. OK to confirm.

Note: The circulation pumps are briefly started every 24

hours to prevent them from seizing up.

Ending the heating program “Standby mode”

Select another heating program.

Without frost protection monitoring (shutdown)

1. Switch OFF the ON/OFF switches at all Vitotronic 100

and Vitotronic 300-K (see chapter “Controls”).

2. Close the shut-off valves in the oil lines (at the tank

and filter) or close the gas shut-off valve.

3. Isolate the heating system from its main power

supply, e.g. at a separate MCB/fuse or a mains

isolator.

4. Where outside temperatures of below 37° F (3° C)

are anticipated, please take suitable measures to

protect the heating system against frost. If necessary,

contact your heating contractor.

Information on a prolonged shutdown

H Circulation pumps may seize up as they are not supplied

with power.

H Vitotronic 300-K:

It may be necessary to reset the date and time

(see page 25).

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Viessmann VITOTRONIC 100 GC1B Operations Instructions Page 13

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