17
4.1.2
Internal heat exchanger, 1 storage tank, 2 collector arrays
4.1.2.1
Internal heat exchanger, 1 storage tank, 2 collector arrays, valve control
If, in the 'System
selection' menu,
the points
"intern. heat exchanger",
"1 storage tank",
"2 collectors" and
"Basic V" are selected,
the hydraulic diagram
illustrated here is
available for use as a
basic system with the
indicated variants.
•
"Basic V" diagram: The regulator constantly records the differential temperature between the
sensors T1 and T3 or T2 and T3. If the set switch-on differential temperature (parameter: 'diff.
temp. solar ON') is reached, pump R1 is activated and the 3-way valve R2 is switched so that the
corresponding collector array can be run through. While the storage tank is charged, the option of
switching to the other collector array is constantly checked. A condition for switching is that the
temperature of the passive collector array must be an adjustable value (parameter: 'switch collect.')
higher than that of the active array. The storage tank is charged irrespective of which collector
array is active until the value for the maximum storing temperature (parameter: 'storage max.') is
reached or falls below the switch-off differential temperature (parameter: 'diff. temp. solar OFF'). If
this is the case, the solar circuit pump and the switch valve are switched off.
Definition: When the 3-way valve is switched off, the collector array 1 is flown through!
Depending on the setting (parameter -> speed control -> R1), the solar pump’s speed control
maintains the differential temperature between 'collector' (T1 or T2) and ‘lower part of the storage
tank' (T3) at the value of the parameter 'diff. temp. solar ON' or the absolute temperature of the
'collector' (T1 or T2) constant at a fixed temperature of 70°C.
The additional functions shown (circulation and the two after-heating systems) are not activated.
•
Add-on
"
- Ci": Output R3 and the T4 temperature sensor can also provide a control of a circulation
pump for the warm water cycle. A detailed functional description of the add-on with further tips can
be found on page 14.
•
Add-on
"
- AH": R4 and T5 combined with an oil or gas boiler can provide after-heating. A detailed
functional description of this add-on can be found on page 15.
•
Add-on
"
- SFH": With the help of R3, T4 and T5 after-heating is also possible considering the
boiler temperature (required, for example, when burning solids). A detailed functional description of
this add-on works can be found on page 15.
R4
T5
oil,
gas
Basic
-AH
T4
R3
Basic
-Ci
alternative radiation sensor for BasicV-R
T4
T5
R3
solid
fuel
Basic
-SFH
R3
M
Bypass for
BasisV-R
S6
S7
