MIN TIME ON
PI ZONE
Heating type
Minimum source
switch-on time
Electric heating
1
Plate radiators
2 (3)
Cast iron radiators
4
Floor heating
5
PRE SWITCH MOdE
SUMMER MOdE
Odd-EVEN MOdE
10
6
SETTING PI-CONTROL PARAMETERS
(factory setting of 10 min)
(factory setting of 2 min)
PI-CONTROL INTERVAL
MINIMUM SWITCH-ON TIME
(factory setting of 2 °C)
PI-CONTROL BAND
Select according to the object’s thermal inertia.
The optimum setting is within the range of 10 to 15 min.
The adjustable range is 5 min to 20 min (by 1min).
Set the interval by turning the “ “ and confi rm “ “.
Select within the range of 1 to 5 minut. The setting is
determined by the heating system type, and depends on
the PI-control time period selection. Setting according to
the table is recommended.
Set the value by turning the “ “ and confi rm “ “.
This value determines the temperature at which the PI-control
starts functioning. For example, the desired temperature is
22 °C, the proportional band is 1.5 °C. Up to 20.5 °C, the
source heats fully. When this value is reached, the PI-control
starts. The PROPORTIONAL band can be set within the ran-
ge of 0.5 to 3.0 °C (by 0.1 °C).
Set the PI band by turning the “ “ and confi rm “ “.
7
This function provides for the desired temperature at the desired time.
You do not need to consider when to switch on the heating to be
warm when getting up in the morning without heating up long before
uselessly. You just program the time when you want the desired tem-
perature. In two days’ operation, the thermostat ascertains thermal
constants of the room, and then switches the heating in advance as
necessary. The preliminary switch-on time is limited to 2 hours.
PRELIMINARY START OF HEATING
Choose YES/NO by turning the“ “ and confi rm “ “.
(factory setting of NO)
8
Switching the heating on is not permitted in this mode. Particularly,
this can be used in the summer period, when heating is unnecessary.
After enabling the mode, the “ “ symbol appears on the display.
Note: The anti-freeze protection (3 °C) is still functional. In this mode,
you cannot change temperature or set the holiday mode!
SUMMER MODE
Choose YES/NO by turning the“ “ and confi rm“ “.
(factory setting of NO)
9
If you choose YES, the PrU and PrL programs will alternate
automatically according to the week (even / odd). This setting
is advantageous, for example, for work in shifts (requirements
on thermal comfort in the object change every week).
EVEN-ODD WEEK SELECTION
(factory setting of NO)
Choose YES/NO by turning the“ “ and confi rm“ “.
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