Switching The System Off; Switching The System On - Viessmann VITODENS 200-W B2HE 85 Operating Instructions Manual

Switching On and Off

Switching the System Off

Shutting down heat generation with frost protection
monitoring ("Standby mode")
For each heating circuit and each heating zone, select
the "Standby mode" operating program and switch off
DHW heating: See pages 20 and 24.
No central heating
No DHW heating
Frost protection for the boiler and the DHW tank is
active.
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.

Switching the System On

Vitodens 200-W
Note: The control unit can be located at the top or bottom.
Legend
A ON/OFF switch
36
Switching off heat generation without frost protection
monitoring
No central heating
No DHW heating
Frost protection for the boiler and the DHW tank is
not active.
1. Turn off the ON/OFF switch.
2. Close the gas shut-off valve.
IMPORTANT
If outside temperatures of below 37°F (3°C) are
expected, take appropriate measures to protect the
system from frost.
If necessary, contact your contractor.
Note: As they are not being supplied with power, the
circulation pumps and diverter valves may seize
up.
If your system has been shut down for a
prolonged period, you may need to reset the
"Time" and "Date": See page 28.
Ask your contractor about the following:
Required system pressure
Position of ventilation apertures in the installation
room, if applicable
1. Open gas shut-off valve.
2. Check whether the power supply to your system is
switched on, e.g. at a separate circuit breaker.
Note: The power supply to the system was switched
on by your heating contractor during
commissioning.
If possible, do not interrupt the power supply,
even when the system is in standby mode.
3. Turn ON/OFF switch A on.
After a short while, the home screen is shown on
the display.
The Lightguide is illuminated constantly.
Your system and, if installed, your remote controls
are ready for operation.
4. Check the system pressure on the manometer:
If the pressure shown is below 12 psi (0.8 bar):
Please top up with water or notify your heating
contractor.
Vitodens 200-W B2HE Operating