Shutting Down The Heating System; Starting A Heating Circuit And Dhw Heating - Viessmann Vitodens 200-W Operating Instructions Manual

Shutting Down the Heating System

Starting a heating circuit and DHW heating

16
If you do not want to use your heating
system temporarily, (e.g. during your
summer holidays), switch to stand-by
operation (see "Shutting down a heating
circuit and stopping DHW heating").
Note:
The circulation pumps are briefly started
every 24 hours to prevent them from
seizing up.
If you do not want to use your heating
system for a long period (several
months), you should shut down the
system.
We advise you to contact your heating
contractor before shutting down the
heating system for long periods. Your
heating contractor will take any
necessary action, (e.g. for frost
protection of the system or to safeguard
the heat exchanger surfaces).
You want to heat your rooms and have
DHW available.
Press "rw" for "Heating & DHW".
If "Select heating circuit" is displayed
and "1r" flashes:
H Select that heating circuit with ⊕ / ⊝,
to which the adjustment should apply.
H Confirm twice with .
Press "rw" for "Heating & DHW"
again.
H Central heating will be provided with
normal or reduced room temperature
(frost protection) according to the set
time program. Standard setting: from
06:00 to 22:00 hrs. with the normal
room temperature, otherwise with the
reduced room temperature.
H DHW heating (if a DHW tank or
instantaneous water heater is
installed) and DHW circulation pump
running (if connected to the control
unit) according to the selected time
program. Standard setting: from
05:30 to 22:00 hrs., DHW is heated
to the selected set temperature and
the DHW circulation pump is switched
ON.
H Frost protection for the boiler and the
DHW tank is enabled.
Start-up / Shutdown
1. Switch the main ON / OFF switch
"8" OFF.
2. Close the gas shut-off valve.
3. Turn off the power supply switch or
disconnect power / pump module.
The power supply to the system is
now switched off.
There is no frost protection.
Note:
All control settings are retained.
Note:
"rw" button illuminates:
H Symbol "s" appears during central
heating with normal room
temperature.
H Symbol "m" appears during central
heating with a reduced room
temperature above 37ºF / 3ºC.