Vaillant timeSWITCH VTS 160 Installation Instructions Manual page 22

12 Glossary
12 Glossary
Heating circuit
A heating circuit is a closed circulation system of pipes and
heating devices (e. g. radiators). The heated water from the
boiler flows into the heating circuit and returns to the boiler
as cooled water.
A heating installation usually has at least one heating
circuit.
Periods
Three time periods can be set per day for heating and hot
water production.
Example:
Period 1: Mo 09.00 - 12.00
Period 2: Mo 15.00 - 18.30
The boiler is ready for heating in each time period desig-
nated HEATING 1.
The boiler is ready for hot water production in each hot
water circuit time period.
In automatic mode the system is controlled as per the spec-
ified values in the time periods.
22
Preparation
The boiler heats the water in the domestic hot water cylin-
der to the selected target temperature. If the temperature
in the domestic hot water cylinder falls by specific amount,
the water is heated up again to the target temperature. You
can set time periods for heating up the contents of the
cylinder.
Soft key function
The function of the selector buttons alternates depending
on the menu you are currently in.
The current functions of the selector buttons are displayed
in the lower display line.
Installation instructions timeSWITCH 0020132031_00