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

Shutting down the heating system

If, temporarily, you have no need for your heating system, e.g. during a summer
holiday, switch all heating circuits to "Standby mode"K (see page 14).
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, you can shut it down.
We recommend you contact your local heating contractor before and after you
shut down your heating system for longer periods.
Your contractor can then take any necessary actions, subject to requirements,
e.g. for frost protection of the system or to preserve the heating surfaces.

Starting a heating circuit and DHW heating

You want to heat your rooms and have DHW available.
Press G for "Htg.+ DHW".
Start-up/shutdown
1. Switch the main ON/OFF switch
"8" OFF; the green indicator (ON
indicator) will extinguish.
2. Close the shut-off valves in the oil
supply lines (at the oil tank and fil-
ter) or the gas shut-off valve.
3. Isolate the system from its main
power supply, e.g. at a separate
MCB/fuse or a main isolator.
As the system is now voltage free,
the heating system has no frost
protection.
Note
All control settings are retained.
If "Select htg.circuit" is displayed
and "1 r" flashes:
Select that heating circuit with a/
&
b, to which the adjustment should
apply.
Confirm twice with d.
&
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