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TECHNICAL PARAMETERS
Power supply
2x1.5V alkaline AA batteries
Type of communication
bidirectional
Frequency 433.92
MHz
Range
300 m (free area), 35 m (built-up area)
Number of temperature changes
6 temperature changes every day with various temperatures
Hysteresis
0.1 to 1.5°C per 0.1°C
Minimum program. time
10 minutes
Range of settable temperatures
3°C to 39°C
Temperature setting
in 0.5°C steps
Minimum indicated change
0.1°C
Measurement accuracy
±0.5°C
Durability of batteries
1 to 3 years according to the type of batteries used
Coverage IP20
Operating temperature
0°C to +40°C
EXPLANATION OF THE PZT FUNCTION (CONST 3)
The PZT (advance start-up of heating) function will provide you with a required temperature at a required
time.
BPT-SP will determine the heat constants of the room within two days and then will automatically switch on the
heating the necessary amount of time in advance. The time of advance start-up is automatically limited to 2 hours.
EXPLANATION OF HYSTERESIS (CONST 5)
The difference between the required and real temperature.
The hysteresis can be set from 0.1 to 1.5°C. If the hysteresis is1°C, and the required temperature 20°C, the
thermostat will switch off at 20°C and switch on again at 19°C (see the graph).
EXPLANATION OF THE PI REGULATION FUNCTION (CONST 6, 7, 8)
The principle of PI regulation consists in the comparison of the current temperature of the room with the
required temperature. Selection of function 6:
When setting the time period, it is necessary to take into account the
thermal lag of the room. The optimum setting is 10-15 minutes. If there are frequent temperature fluctuations in the
room, selection of a shorter time period is recommended. The zone of proportionality states the value from which the
PI regulation will operate (Function 8).