Viessmann VITOPEND 100-W Operating Instructions Manual page 43

Appendix
Terminology
(cont.)
Flow temperature
The temperature of the heating water
that flows to the radiators (in the flow
line). Accordingly, the temperature of
the heating water that flows from the
radiators to the boiler (in the return line)
is referred to as return temperature.
Weather-compensated mode
See "Heating mode"
Time program
In the time programs, you specify what
your heating system should do at what
time.
43