Extra 2: Cooling Function; Extra 3: Diff. Control Function; Extra 4: Antistagnation - Immergas DOMESTIC SOL 750 V2 Instructions Pour L'installation Et L'utilisation

- Extra 1" used with "System 2";
T1
T4
P1
P2
T2

3.2.10 Extra 2: Cooling Function.

The cooling function is generally used for
cooling down the primary solar tank at high
solar irradiation. With this function you could
cumulate excess energy on another heat storage.
(Swimming pool or other basin for example)
(See the part Extra Function).
- Extra 2 used with "System 1";
T1
T3
P3
P1
T2
P3
T3
- Extra 2 used with "System 2";
T1
P1
P2

3.2.11 Extra 3: Diff. control Function.

The Diffcontrol function can be used to transfer
heat energy of one tank to another tank separa-
tely to the solar loading function.
With this extra function you could control the
temperature on both tanks and you can choose
the different setting levels to adapt this fun-
ction at your needs. (See the part Diff. control
Function).
- Extra 3 used with "System 1";
T1
P1

3.2.12 Extra 4: Antistagnation.

At high solar radiation the solar fluid is protec-
ted from stagnation, where solar fluid would go
into vapor.
If the solar circuit (T1, T4 (when two collector
fields)) is heated over 110°C (default value, can
be changed), the relais output P3 and the pump
P1 are switched ON. After the solar circuit is
cooled down to 90°C (default value, can be
changed), the P1 and P3 output are switched off.
30
T4
P3 T3
T2
T4
P3
T3
T2