Is DualSun compatible with the Daikin EKHH2 heat storage tank?

YES.

The DualSun SPRING hybrid panels can be coupled with the TWH 300EH thermodynamic storage tank.

 

In order to achieve greater economic efficiency through the production of free renewable heat, it is necessary to give priority to solar hot water production.

 

The intelligence of the thermodynamic storage tank can be informed by an electrical signal and the time programs can be set to guarantee hot water comfort and optimise the operating ranges of the DualSun solar system. This is done with the aim of maximising the energy yield of the DualSun-Daikin coupling.  

 

In order to inform the intelligence of the thermodynamic storage tank to decide when to switch on the heat pump to guarantee optimum comfort at times of high demand, it is necessary to connect the DualSun solar control to the electronic card of the thermodynamic storage tank.

 

1. DualSun CS2 solar controller

  • Wiring 

Connect a power relay between the terminals of pump R1 of the DualSun CS2 solar controller and terminals 30 and 31 of the electronic board of the thermodynamic storage tank.

C_blage_CS2_EKHH2_-_EN.PNG.png

 

 

2. Setting of the DualSun CS2 solar station

No changes to be made to this wiring.

 

 

3. DualSun SLL solar control

  • Wiring 

Connect the floating contact relay R4 of the DualSun SLL solar controller and terminals 30 and 31 of the circuit board of the storage tank.

C_blage_SLL_EKHH2.PNG.png

 

  • Setting of the solar station SLL
  1. Set up system 1
  2. Activate the parallel relay option : OPARR = ON
  3. Parallel relay : REL = R4
  4. Reference relay : RELR = R1
  5. INVER = OFF

 

  • Setting of the thermodynamic water heater

 Time programming:

Parameter name

Parameter description

Minimal value

Maximal value

Factory setting

Detail

Value to set morning showers

Value to set evening showers

Hd1

Start time Monday

1

2

1

1 = HOn1-HOF1

2 = HOn2-HOF2

1

1

Hd2

Start time Tuesay

1

2

1

1 = HOn1-HOF1

2 = HOn2-HOF2

1

1

Hd3

Start time Wednesday

1

2

1

1 = HOn1-HOF1

2 = HOn2-HOF2

1

1

Hd4

Start time Thursday

1

2

1

1 = HOn1-HOF1

2 = HOn2-HOF2

1

1

Hd5

Start time Friday

1

2

1

1 = HOn1-HOF1

2 = HOn2-HOF2

1

1

Hd6

Start time Saturday

1

2

2

1 = HOn1-HOF1

2 = HOn2-HOF2

1

1

Hd7

Start time Sunday

1

2

2

1 = HOn1-HOF1

2 = HOn2-HOF2

1

1

HOn1

First slot start time 

00:00

23:59

--:--

--:-- = fonction exclue

12:00

17:00

HOF1

First slot end time

00:00

23:59

--:--

--:-- = fonction exclue

06:00

23:00

HOn2

Secondslot start time 

00:00

23:59

--:--

--:-- = fonction exclue

--:--

--:--

HOF2

Secondslot end time

00:00

23:59

--:--

--:-- = fonction exclue

--:--

--:--

 

 

Setting parameters of digital entry 1 :

Parameter name

Parameter description

Minimal value

Maximal value

Factory setting

Detail

Value to set 

i0

Solar thermal entry activation (digital 1)

0

2

2

0 = entry disabled

1 = pressure entry

2 = digital 1 entry

2

i1

Contact type of solar thermal entry 

(digital 1)

0

1

0

0 = activated if closed contact

1 = activated if open contact

0

SP8

Solar thermal cycle set point 

0

100

40

 

25

C13

Solar thermal cycle timeout 

0

240

20

 

60

 

 

Parameters for the activation of the various functioning modes :

Automatic : Tlower_probe < SP2 – r0

Eco: Tlower_probe < SP1 – r0

Overboost: Tlower_probe < SP3 et Tupper_probe < SP3

 

 

Parameter name

Parameter description

Minimal value

Maximal value

Factory setting

SP1

 

Setting WARM H2O eco cycle

r3

r4

55

SP2

Setting WARM H2O auto cycle

r1

r2

55

SP3

Setting COLD H2O

10

r2

45

r0

Differential for functioning set point

0,1

30

7

r1

Minimum auto cycle set point

10

r2

40

r2

Maximum auto cycle set point

r1

100

70

r3

Minimum eco cycle set point

10

r4

40

r4

Differential for functioning set point

r3

100

56

 

 

The SP1, SP2 and SP3parameters can be modulated according to the hot water comfort desired.

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