Viessmann VITOTROL 300 RF Operating Instructions Manual page 49

Terminology
Night setback
See "Reduced heating mode".
Standard heating mode
For periods when you will be at home
during the day, use standard heating
mode to heat your rooms. Set the peri-
ods using the time program for central
heating. During these periods, the rooms
are heated to the standard room temper-
ature.
Standard room temperature
For periods when you will be at home
during the day, set the standard room
temperature (see page 19).
Reduced heating mode
For periods when you will be absent or
during the night, heat your rooms in
reduced heating mode (setback mode).
Set the periods using the time program
for central heating. During these periods,
the rooms are heated to a reduced room
temperature.
Reduced room temperature
For periods when you will be absent or
during the night, set the reduced room
temperature (see page 19). See also
"Reduced heating mode".
Solar circuit pump
In conjunction with solar thermal sys-
tems.
(cont.)
The solar circuit pump delivers the
cooled heat transfer medium from the
DHW cylinder indirect coil to the collec-
tors.
Set temperature
Default temperature that should be
reached; e.g. set DHW temperature.
Summer mode
Operating program "Only DHW".
During the warmer months of the year,
i.e. if the rooms do not have to be heated,
you can deactivate heating mode. The
boiler remains operational for DHW
heating.
Cylinder primary pump
Circulation pump for heating the DHW in
the DHW cylinder.
Weather-compensated mode
In weather-compensated mode, the
heating flow temperature is controlled
according to the outside temperature.
This means that no more heat is gener-
ated than is actually required to heat the
rooms to the set room temperature you
selected.
The outside temperature is captured and
transmitted to the control unit by a sen-
sor fitted outside the building.
Appendix
49