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Heating circuit control unit
Upper control range limit
Electronic maximum temperature limiter
Setting range: 10 to 100 °C.
Change via coding address "C6".
Note
The maximum temperature limit is no substitute for the
underfloor heating system temperature limiter.
Temperature limiter for underfloor heating:
DHW temperature control
Brief description
Cylinder temperature control is a constant tempera-
■
ture control. It operates by starting and stopping the
circulation pump for cylinder heating and switching
the 2-way valve for flow limitation.
■
The temperature differential is determined automati-
cally and can be set via coding address "C" (DHW
group).
Screed drying
The screed drying function enables screeds to be
dried. For this, observe the screed manufacturer's
instructions.
When screed drying is activated, the heating circuit
pump is switched on and the flow temperature is held
at the selected profile. On completion (30 days), the
heating circuit with mixer is regulated automatically
according to the set parameter. Observe EN 1264. The
report to be provided by the heating contractor must
contain the following details regarding heat-up:
Temperature profile 1 (EN 1264-4), code "F1:1"
50
40
30
20
10
1
5
10
Fig. 54
(cont.)
15
20
25
30
Days
The temperature limiter switches the heating circuit
pump off if the set value has been exceeded. In such
cases, the flow temperature decreases only slowly; it
may be several hours before the system restarts auto-
matically.
Lower control range limit
Electronic minimum temperature limiter
Setting range: 1 to 100 °C
Change via coding address "C5"
Functions
Time program
An automatic program or an individual time program
may be selected for DHW heating.
To control DHW heating, up to 4 time phases per day
can be set in the individual time program via the time
switch.
Operating instructions Vitoligno 200-S
■
Heat-up data with the relevant flow temperatures
■
Max. flow temperature achieved
Operating state and outside temperature at handover
■
Various temperature profiles can be set via coding
address "F1".
The function continues after a power failure or after the
control unit has been switched off. "Heating and DHW"
is started when screed drying is finished or if code
"F1:0" is set manually.
Function description
91
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