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19
4
MFA
TKV*
TPU
TKO
eBus
TKO
PS
TKV*
TPU
TKR*
VIZ*
VBY
TKR*
VIZ*
PS
TBY
TBY
X1:
N
1
N
2
N
3
N
L
4
5
6
X2:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
A
M
VBY
B
AB
•
Energy yield calculation (optional;
➭
Ch. 7.10)
The WRSol 2.0 determines the temperature differential
between the collector sensor (TKO) and the reference
sensor (TPU). If a collector return sensor (TKV) is fitted this
can be included in the control.
As soon as the temperature differential is greater than the
value set (
Calorifier Diff. On
), the solar pump is
switched on and the tank is topped up until the switch off
condition (
Calorifier Diff. Off
) or the maximum
temperature of the calorifier has been reached.
The three way valve (VBY) is changed over depending on
the collector temperature (TKO) and the reference
sensor (TBY).
The external heat exchanger can be blocked via the
potential free
Multi-funct. Output
(MFA).
Possible settings MFA output:
0, 5, 6, 7, 8, 9, 10, 11, 12
Variation 13: DHW calorifier with collector bypass
* optional
MFA
TKV*
TPU
TKO
eBus
TKO
PS
TKV*
TPU
TKR*
VIZ*
TKR*
VIZ*
PS
TPO
TKW
TWW
TPO
TKW
TWW
X1:
N
1
N
2
N
3
N
4
5
6
X2:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
PWW
PWW
•
Energy yield calculation (optional;
➭
Ch. 7.10)
The WRSol 2.0 determines the temperature differential
between the collector sensor (TKO) and the reference
sensor (TPU). If a collector flow sensor (TKV) is fitted this
can be included in the control.
As soon as the temperature differential is greater than the
value set (
Calorifier Diff. On
), the solar pump is
switched on and the tank is topped up until the switch off
condition (
Calorifier Diff. Off
) or the maximum
temperature of the calorifier has been reached.
The plate heat exchanger pump (PWW) is switched on
when the cold water temperature (TKW) falls below 30°C
or the sensor short circuits.
The pump is switched over when the DHW temperature at
the (TWW) is greater than the tank setpoint temperature,
TKW exceeds 30°C or the short circuit at the sensor input
has been rectified.
The external heat exchanger can be blocked via the
potential free
Multi-funct. Output
(MFA).
Possible settings MFA output:
0, 5, 6, 7, 8, 9, 10, 11, 12
KW
WW
Variation 14: Calorifier for DHW via plate heat exchanger