P32-EN – Subject to technical changes 04.11
55
Technician
Additional Information for Installers
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SOLAR CONTROL
BROWSE
BACK
Hysteresis:
3.0
K
LIMIT TEMP.:
T.Lim.ACT:
65
°C
T.Lim.MAX:
95
°C
Read/change the maximum storage tank tempera-
ture above at the pointer position
.
Maximum temperature in the upper storage tank
In “AUTO” operating mode, the solar pump switches off
when the hot water buffer layer (S1 sensor, “Buffer temp.
Upper”, input 1) reaches the maximum tank temperature,
“T.Lim.MAX” (safety function, see
p. 50 under “When does
the safety function deploy?”
). The message “Puffer voll”
(“buffer full”) appears.
We recommend that you do not change the
maximum tank temperature of “T.Lim.MAX” = 95°C
and “hysteresis” = 3 K, which are set at the
factory. The tank is designed for a maximum
temperature of 95°C. When this temperature
is reached, you will also receive the warning
message, “Excess temperature” (
section 7
).
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SOLAR CONTROL
BROWSE
BACK
Hysteresis:
3.0
K
REFERENCE TEMP:
T.Ref.ACT:
25
°C
T.Ref.MAX:
80
°C
Read/change the maximum storage tank tempera-
ture below at the pointer position
.
Maximum temperature in the lower storage tank
The solar pump switches off when the lower solar buffer
layer (S3 sensor, “Storage Reference”, input 3) reaches
the set maximum tank temperature, “T.Ref.MAX”
(
page 50 under “When does the safety function deploy?
”).
The “Puffer voll” message appears.
We recommend that you leave the maximum
storage tank temperature “T.ref.MAX” at 90°C.
You should only change the “hysteresis” of 3 K in
exceptional cases. To avoid accidental changes,
you can only change these settings in the “Techni-
cian” operating mode and up.
Collector maximum temperature
This function protects the solar system components by
preventing the solar pump from restarting when steam
has formed in the collector.
The solar pump switches off when the temperature on
the S8 (input 8) collector sensor exceeds the maximum
collector temperature, “T.Coll.MAX”, which is set to 120°C
at the factory. The solar pump does not restart until the
collector cools below “T.Coll.MAX” minus a “hysteresis”
of 20 K (adjustable), assuming the other switch-on condi-
tions (maximum tank limit or switch-on difference) have
been met.
You should only change “T.Coll.MAX” from 120°C
and the “hysteresis” from 20 K in exceptional
cases. To avoid accidental changes, you can only
change these settings in the “Technician” operating
mode and up.
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SOLAR CONTROL
BROWSE
BACK
Hysteresis:
20 K
COLLECTOR TEMPERATURE:
T.Coll..ACT:
85
°C
T.Coll..MAX:
120
°C
Read/change the maximum collector temperature
“T.Coll.MAX” at the pointer position
.
