45
In the initial
“Geothermal heat” (= start up)
position (the controller’s external selector switch in the geothermal heating unit)
the accumulator is heated solely with the compressor.
In
automatic control
the accumulator is heated by the compressor or if needed by the electrical heating resistor.
Malli V8-15, T8-T60 ja S8-S15 Limited effect (Part effect)
Setting Factory setting
Range
Explanation
Accumulator Upper part MIN
55.0 °C
5... 80 °C
Minimum temperature of accumulator’s upper part
Accumulator Upper part hysteresis
6.0 °C
3... 10 °C
Temperature control hysteresis of accumulator’s upper part
Accumulator Lower part
hysteresis
6 °C
3... 10 °C
Temperature control hysteresis of accumulator’s lower part
Accumulator Lower part MIN
35.0 °C
20... 55 °C
Minimum temperature of accumulator’s lower part
Upper part control limit
70°C
55 ... 80 °C The temperature of the top of the accumulator, where compressor
control given by the top exits
Upper part hysteresis El. Heat.
5.0 °C
3... 10 °C
The electric heating hysteresis for accumulator’s upper part
Status
You can check what asks for or prevents the compressor and / or electric heater from turn-
ing on. Start and stop delays are also displayed. In addition, the running time / on of the
compressor and the electric heater is displayed.
Function and its terms
A compressor running command is given, when condition 1 or condition 2 is met
Condition 1
•
the temperature of the accumulator’s upper part
(meas.10)
drops below the [“Accumulator Upper part MIN” - 0.4°C]
and
•
the temperature of the accumulator’s lower part (
meas. 11
) drops below [“Accumulator Upper part MIN” - “Accumulator Upper
part hysteresis ” - 2°C]
or
Condition 2
•
the temperature of the accumulator’s upper part
(meas.10)
drops below [“Accumulator Upper part MIN”- 3°C]
or
•
the temperature of the accumulator’s lower part (
meas. 11
) drops below [the controller indicated temp of H1 supply water + 5°C
- “Accumulator Lower part hysteresis”]
or
•
the temperature of the accumulator’s lower part (
meas. 11
) drops below the “Accumulator Lower part MIN” setting
The compressor stops when condition 1 or condition 2 is met
Condition 1
•
the temperature of the accumulator’s upper part (
meas. 10
) exceeds the [“Accumulator Upper part MIN” + 1.4°C]
and
•
the temperature of the accumulator’s lower part (
meas. 11
) is above [“Accumulator Upper part MIN” - “Accumulator Upper part
hysteresis ”]
and
•
the temp. of the accumulator’s lower part (
meas. 11
) exceeds [the controller indicated temp of H1 supply water + 5°C”]
and
•
the temp. of the accumulator’s lower part (
meas. 11
) exceeds [“Accumulator Upper part MIN” - “Accumulator Upper part
hysteresis”]
Condition 2
•
the temperature of the accumulator’s upper part (
meas. 10
) exceeds the “Upper part control limit” setting
and
•
the temp. of the accumulator’s lower part (
meas. 11
) exceeds [the controller indicated temp of H1 supply water + 5°C”]
and
•
the temperature of the accumulator’s lower part (
meas. 11
) exceeds [“Accumulator Lower part MIN” - “Accumulator Lower part
hysteresis”]
Compressor running is inhibited if
•
less than 5 minutes have elapsed since the previous compressor start
or
•
the temp. (
meas. 10
) of the accumulator’s upper part exceeds 95°C (hysteresis 2.5 °C)
or
•
the temp. (
meas. 11
) of the accumulator’s lower part exceeds 55°C (hysteresis 3.3 °C)
or
•
if
meas. 12
is connected and the hot gas temp. exceeds 125°C (hysteresis 1 °C)
The electrical heating resistor switches on when
•
the temperature of the accumulator’s upper part (
meas. 10
) drops below the [”Accumulator Upper part MIN”- ”Upper part hys-
teresis El. heating”]
or
•
the temp. of the accumulator’s lower part (
meas 11
) is under the [“controller indicated H1 supply water temperature” +
5°C - “Accumulator Lower part hysteresis” - 10°C] for 12 hours
or
•
the temp. of the accumulator’s lower part (
meas 11
) is under the [“Accumulator Lower part MIN” - 10°C] temp for 12 hours.
The electrical heating resistor switches off, when condition 1 or condition 2 is met
Condition 1
•
temperature of the accumulator’s upper part (
meas.10
) exceeds [”Accumulator Upper part MIN”- ”Upper part hysteresis El.
heating” + 3°C]
Condition 2
•
the temp. (
meas. 11
) of the accumulator’s lower part exceeds the [”controller indicated H1 supply water tempe 5°C]
or
•
the temp. (
meas. 11
) of the accumulator’s lower part exceeds [”controller indicated H1 supply water tempe 5°C -
“Accumulator Lower part hysteresis” + 2°C] temperature
or
•
the temp. (
meas. 11
) of the accumulator’s lower part exceeds [“Accumulator Lower part MIN” + 2°C]
Control of the electrical heating resistor always ends
•
the temperature (
meas.10
) of the accumulator’s upper part exceeds 95°C
or
•
if
meas. 12
is connected and the hot gas temperature exceeds 125°C (hysteresis 1 °C)
