Is DualSun compatible with the Airwell TDF thermodynamic water heater?

Yes.

The DualSun SPRING hybrid panels can be coupled with the Airwell TDF Solar thermodynamic storage tank.

 

For optimal coupling, it is recommended to schedule heating time slots by the thermodynamic group compatible with the customer's consumption habits and solar heating hours - see settings below:

  • Showers in the evening: 4 p.m. to 11 p.m.
  • Showers in the morning: 2 a.m. to 8 a.m.

See chapter 10 of the installation instructions of the Airwell TDF Solar storage tank

 

 

If necessary to ensure a better hot water comfort by programming heating time slots between 8 a.m. and 4 p.m. (solar hours):

  • It is then possible to inform the intelligence of the thermodynamic water heater by an electric signal to always give priority to free solar heating and avoid simultaneous heating.
  • The DualSun solar controller must be connected to the electronic board of the water heater.

See below for the option of controlling the thermodynamic water heater with the DualSun solar controller.

 

 

1- Wiring (Two options are possible)

Option 1

Direct wiring with the dry contact R4 relay of the DualSun SLL solar controller according to the following diagram:

C_blage_ballon_Airwell_TDF_Solar_Option_1.png

image.png Elements_EN.JPG

 

Option 2

Wiring of the DualSun SLL solar controller to the thermodynamic water heater and place a single phase power relay to control the Airwell TDF Solar tank according the following diagram:

C_blage_ballon_Airwell_TDF_Solar_Option_2.png

 

2- Setting of the DualSun SLL solar controller

Option 1 Option 2
  1. Set system 1
  2. Activate the parallel relay OPARR option = ON
  3. Parallel relay : REL = R4
  4. Reference relay: RELR = R1
  5. INVER = OFF
  1. Set system 1
  2. Activate the parallel relay OPARR option = ON
  3. Parallel relay : REL = R2
  4. Reference relay: RELR = R1
  5. INVER = OFF

 

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