ELEKTROBOCK BPT322 GST Manual page 8

5 SETTING HYSTERESIS PARAMETERS
(factory setting of 0.5 °C)
HYSTERESIS
Set from 0.1 to 6 °C. According to the value preset, the thermostat switches on at the temperature:
T switching = T required - HYSTERESIS
Set the hysteresis by turning the "
MINIMUM SWITCH-ON TIME
Here you can set the minimum switch-on time of the boiler in minutes at hysteresis. Select within the
range from 1 to 5 minutes according to the type of the heating system used (see the table).
Set the value by turning the "
6
SETTING PI-CONTROL PARAMETERS
PI-CONTROL INTERVAL
Select according to the object's thermal inertia. The optimum setting usually falls within the range of
10 to 15 min. The adjustable range is 5 min to 20 min (by 1 min).
Set the interval by turning the "
MINIMUM SWITCH-ON TIME
Select within the range of 1 to 5 minutes. The setting is given 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 "
PI-CONTROL BAND
(factory setting of 2 °C)
TThis 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
range of 0.5 to 3.0 °C (by 0.1 °C).
Set the PI band by turning the "
7
PRELIMINARY SWITCH-ON OF HEATING
This function guarantees you the required temperature at the required time. You need not consider when
to switch the heating on in order to be warm when getting up in the morning without heating unnecessarily
long in advance. You just program the time at which you want the desired temperature. Within two opera-
ting days, the program ascertains the thermal constants of the room and then it switches the heating on
in advance suffi ciently. The preliminary switch-on time is limited to 2 hours.
Set YES/NO by turning the "
8 SUMMER MODE
(NO set by default)
In this mode, you are not allowed to switch the heating on. It can particularly be used in the summer
period, when you need not heat. After you enable this mode, the "
Note: The anti-freeze protection (3 °C) is still enabled. In this mode, you cannot change the temperature
or set the holiday mode!
Set YES/NO by turning the "
9 EVEN-ODD WEEK SELECTION
If you choose "YES", the PrU and PrL programs will alternate automatically according to the current week
(even/odd). This setting is suitable, for example, for shift operation (the requirements on thermal comfort
in the object change every week).
Set YES/NO by turning the "
10 HEATING / COOLING SELECTION
Setting the thermostat function.
HEATING =
the output relay (for heating systems) switches if the current temperature drops below the desired value
COOLING =
the output relay (for cooling systems) switches if the current temperature rises above the desired value
Set HEAT/COOL by turning the "
11
TEMPERATURE CORRECTION
This is used for correcting the temperature measured by the thermostat. The setting can only be done
after 12 hours of operation, when the internal sensor temperature has settled. Measure the room
temperature with a thermometer; if it is different from the temperature on the thermostat,
set the correction within the range of -5 °C do +5 °C.
Set the correction by turning the "
" button, and confi rm with the "
(factory setting of 2 min)
" button, and confi rm with the "
(factory setting of 10 min.)
" button, and confi rm with the "
(factory setting of 2 min.)
" button, and confi rm with the "
" button, and confi rm with the "
(NO set by default)
" button and press the "
" button and press the "
(NO set by default)
" button and press the "
(HEAT set by default)
" button and press the "
(0 °C set by default)
" button and press the "
" button.
" button.
" button.
Heating type
Electric heating
Plate radiators
Cast iron radiators
" button.
Floor heating
" button.
" button to confi rm.
" symbol appears on the display.
" button to confi rm.
" button to confi rm.
" button to confi rm.
" button to confi rm.
HYSTERESIS
MIN TIME ON
Minimum source
switch-on time
1
2 (3)
4 MIN TIME ON
5
PI ZONE
PRE SWITCH MOdE
SUMMER MOdE
Odd-EVEN MOdE
HEATING
TEMP CORRECT
8