Extra 2: Cooling Function; Extra 3: Diff. Control Function; Extra 4: Antistagnation - Immergas COD. 3.022648 Instructions Pour L'installation Et L'utilisation

- Extra 1" used with "System 2";
T1
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
P1
T2
T4
P3
T3
P3
- 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 separately to the solar
loading function.
With this extra function you could control the tempe-
rature on both tanks and you can choose the different
setting levels to adapt this function 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 protected 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