40
4
MFA
eBus
TKO
PS
THR
TSO
VRA
PFK
TFK
TPO
TKO
PFK
TFK
M
THR
TSU
X1:
N
1
N
2
N
3
N
L
4
5
6
TV
M
VRA
AB
B
A
PS
TSU
TPO
TSO
TPU
TPU
PWL*
PWL*
X2:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Variation 59: Energy storage tank WES with heating support, collector and solid fuel boiler
• Heating return temperature increase
The WRSol 2.0 determines the temperature differential
between the collector sensor (TKO) and the reference
sensor (TSO or TSU).
As soon as the temperature differential is greater than the
value set (
Tank Diff. On
), the solar pump is switched
on and the storage tank is topped up until the switch off
condition (
Tank Diff. Off
) or the maximum storage
tank temperature has been reached.
WES function (
➭
Ch. 7.23)
Using the three way valve for return temperature increase
(VRA) the available energy from the calorifier can be
utilised depending on the calorifier temperature (TPO) and
the heating return sensor (THR).
Release of solid fuel boiler pump (PFK) (
➭
Ch. 7.7).
The thermal mixer valve (TV) enables fast heat up of the
solid fuel boiler.
Depending on the average pump speed and the minimum
storage tank temperature, the external heat exchanger can
be blocked via the potential free
Multi-funct. Output
(MFA).
In addition an 18 hour block can be activated.
The DHW function (
➭
Ch. 7.14) can also influence the MFA
output.
Possible settings MFA output:
0, 1, 2, 5, 6, 7, 8, 9, 10, 11, 12
* optional
TPU
TKO
TKR*
VIZ*
PS
PZW*
WW
KW
TPO
TSO
VIZ*
MFA
eBus
TKO
PS
TKV*
TKR*
PPS
X1:
N
1
N
2
N
L
3
N
4
5
6
TSO
PZW*
VPO
TKV*
TPO
TPU
VPO
PPS
AB
B
A
M
X2:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Variation 60: Tank cascade for DHW and heating with retrieval function and load change-over
•
Energy yield calculation (optional;
➭
Ch. 7.10)
• Circulation function without sensor (optional;
➭
Ch.7.15)
• Three way valve
The WRSol 2.0 determines the temperature differential
between the collector sensor (TKO) and the reference sen-
sor (TSU). If a collector flow sensor (TKV) is
fitted this is included in the control.
As soon as the temperature differential between TKO and
TPU is greater than the value set (
Calorifier Diff. On
),
the solar pump is switched on and the calorifier is topped
up until the switch off condition (
Calorifier Diff. Off
)
or the maximum calorifier temperature has been reached.
If the average pump speed increases to over 80% or if the
temperature at sensor TKO (TKV) is higher than at TPO by
“Calorifier Diff. On”, an attempt is made to load to TPO by
reducing speed PS if required and if possible activating the
switch over valve VPO. Loading to TPO is topped, if the
switch off condition “Calorifier Diff. Off” relating to TPO is
no longer maintained or the “Tank Temp. Setpoint” at TPO
has been reached.
Depending on the average pump speed and the minimum
storage tank temperature, the external heat exchanger can
be blocked via the potential free
Multi-funct. Output
(MFA). In addition an 18 hour block can be activated.
The DHW function (
➭
Ch. 7.14) can also influence the MFA
output. With the charge reversal pump calorifier-tank (PPS)
the energy stored is transferred from the calorifier
depending on the calorifier temperature (TPO) and the tank
temperature (TSO) (
➭
Ch. 7.18).
Possible settings MFA output:
0, 1, 2, 5, 6, 7, 8, 9, 10, 11, 12
* optional
