Viessmann Vitotronic 100 GC1 Installation And Service Instructions Manual page 115

Heating circuit control
Extended economy circuit
The heating circuit pump is switched
OFF, and the set supply temperature
is set to 0 ˚C / 32 ˚F, if
the outdoor temperature exceeds the
value selected via coding address A6
the set room temperature is reduced
via coding address A9
in conjunction with the mixing valve
circuit:
the mixing valve has been closed for
12 minutes (mixing economy
function, coding address A7)
Slab curing function
(only in conjunction with a mixing valve
circuit)
Please note:
Four different temperature profiles can
be selected for drying the slab. These
profiles are activated via coding
address F1.
When the slab curing function is
activated, the heating circuit pump
of the mixing valve circuit is switched
ON, and the supply temperature will
be held at the selected profile. After
completion (30 days), the mixing valve
circuit will be regulated automatically
via the set parameters.
(cont.)
System dynamics – mixing valve circuit
(only in conjunction with a mixing valve
circuit)
You can influence the control
characteristics of the mixing valve via
coding address C4.
Central operation
Central operation for all downstream
heating circuits can be programmed
via coding address 7A.
The heating and holiday program then
applies to all heating circuits in the
system.
The programming unit of the other
heating circuits displays central control
when the heating program and holiday
program buttons are activated.
Any set holiday programs in the
heating circuit programming units
will be deleted.
Party and economy buttons on all
control units are without effect.
Frost protection
When the outdoor temperature falls
below +1 ˚C / 34 ˚F, a supply
temperature of at least 10 ˚C / 50 ˚F
will be safeguarded.
For changes see coding address A3,
variable frost limit.
Function description – Vitotronic 300-K, MW1S
115