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Central Heating Pump Controllers ST-21 D1 - D5

sterownik ST-21D1


Controller Functionality
  • CH pump control
  • possible operation as a thermostat (D1)
  • anti-stop function
  • anti-freeze function
Controller Equipment
  • LED display
  • two temperature sensors (does not apply to ST-21 D1)


Technical data

Wyszczególnienie
Jedn.
  
Power supply
V
 230V/50Hz +/-10%
Maximum power consumption of the controller
W
 2
Ambient temperature
°C
 5÷50
Maximum output load of the circulation pump
A
 1
Range of hysteresis settings
°C
 1÷10
Accuracy of measurement
°C
 +/- 1
Range of temperature settings
°C
 5÷90
Range of temperature settings
°C
 5÷90
Fuse insert
A
 1,6


1   Function
D1
D1
D1
D1
D1
Manual operation
√
√
√
√
√
Hysteresis
√
√
-
-
-
Activation threshold 1
√
√
-
-
-
Activation threshold 2
-
√
-
-
√
Pump / thermostat selection
√
-
-
-
-
Activation delta
-
-
√
√
√
Factory settings
√
√
√
√
√
Anti-stop
√
√
√
√
√
Anti-freeze
√
√
√
√
√
Strength of sensor 1
(-25÷90) °C
(-25÷90) °C
(-25÷90) °C
(-25÷90) °C
(-25÷90) °C
Strength of sensor 2
-
(-30÷180) °C
(-30÷480) °C
(-25÷90) °C
(-25÷90) °C


Sample schemes of connections:

schemat schemat schemat schemat schemat


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