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Contents
DeltaSol
®
AX HE differential temperature controller
The DeltaSol
®
AX HE controller is the simplest solution for all differen-
tial controls. Equipped with an electromechanical relay and a PWM output, the
DeltaSol
®
AX HE controller manages the speed control of a high-efficiency
pump.
Additionally, the controller offers an antifreeze function and an adjustable target
temperature for minimum or maximum temperature limitation. The enclosed sili-
cone sealing cord guarantees a protection against dripping water.
1 Overview .............................................................................................. 4
2 Installation ........................................................................................... 4
2.1 Mounting ........................................................................................................................4
2.2 Electrical connection ...................................................................................................6
3
Operation and function ...................................................................... 6
3.1 Flashing codes ...............................................................................................................6
3.2 DIP switches and potentiometres ............................................................................6
3.3 Switch-on temperature difference ............................................................................7
3.4 Manual mode .................................................................................................................7
3.5 Maximum temperature limitation .............................................................................7
3.6 Antifreeze function ......................................................................................................7
3.7 Minimum temperature limitation ..............................................................................8
3.8 Minimum speed (speed control via PWM signal) ..................................................8
3.9 PWM profile ..................................................................................................................8
4 Examples .............................................................................................. 8
4.1 Standard solar system with 1 store .........................................................................8
4.2 Heating circuit return preheating .............................................................................9
4.3 Heat exchange control ................................................................................................9
4.4 Store loading by means of a solid fuel boiler ...................................................... 10
5 Accessories ........................................................................................ 10
6 Troubleshooting ................................................................................. 10
139
45
Drill hole positions
112 mm