43
Function and its terms
A compressor running command is given, when
•
the temperature of the accumulator’s upper part
(meas.10)
drops below the [“
Upper part setting
” - (“Accumulator Upper part
hysteresis“/2)]
or
•
the temperat. of the accumulator’s lower part (
meas. 11
) drops below [controller indicated H1 supply water tempe 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 running, when
•
the temperat. of the accumulator’s upper part (
meas. 10
) rises above the [“
Upper part setting
” + (“Accumulator Upper part
hysteresis“/2]
and
•
the temp. of the accumulator’s lower part (
meas. 11
) rises above the [controller indicated H1 supply water tempe 5° C]
and
•
the temperature of the controller’s lower part (
meas. 11
) rises above the [“ Accumulator Lower part MIN” + “Accumulator Lower
part hysteresis“] temperature.
Compressor running is inhibited,
•
if a 3-phase compressor is used and less than 5 minutes have elapsed since the previous run
•
if a 1-phase compressor is used and less than 10 minutes have elapsed since the previous run
•
if the hot gas temperature measurement (
meas. 12
) is connected and the temperature of the hot gas rises above 125°C
•
(the compressor starts running when the temperature drops to 122° C).
•
if the temp. of the accumulator’s upper part (
meas. 10
) exceeds 95° C (overheat alarm, the compressor starts running when
the temperature has dropped to 85° C)
•
if the temperature of the accumulator’s lower part (
meas. 11
) exceeds the calculated “Lower part maximum limit” (53...55°C).
•
The compressor starts up when the temperature of the accumulator’s lower part has dropped 3° C below the calculated
“Lower part maximum limit”
The electrical heating resistor switches on if
•
The temperature of the compressor’s upper part (
meas. 10
) is below [“
Upper part setting
” - (“Accumulator Upper part hys-
teresis“/2) - “Upper part hysteresis El. heat. ”]
or
•
the temp. of the accumulator’s upper part (
meas. 10
) is below the [controller indicated H1 supply water temperature - ”Upper
part hysteresis El. heat. ”]
or
•
Compressor alarm is active and an attempt has been made to restart the compressor after a delay of 7 min (3 ~ compressor) or
10 min (1 ~ compressor). After this, an attempt is made to start the compressor every 60 minutes.
The electrical heating resistor switches off, when
•
the temperature of the accumulator’s upper part (
meas. 10
) rises above the [“Upper part setting” - (“Accumulator Upper part
hysteresis“/2)]
and
•
the temperature of the controller’s upper part is above the [controller indicated H1 supply water temperature]
Control of the electrical heating resistor always ends
•
if the temperature of measurement 10 rises above 95° C; the temp. must drop to 85° C before the electrical heating elementcan start up
Model T8-T80, V7.0-V30.0 ja Vs6.0-Vs12.0 limited effect (Part effect)
Setting
Factory
setting
Range
Explanation
Accumulator Upper part MIN
55.0 °C
5... 80 °C
Minimum temperature for the accumulator’s upper part.
Accumulator Upper part
hysteresis
6.0 °C
3... 10 °C
Temperature control hysteresis for the accumulator’s
upper part
.
Accumulator Lower part
hysteresis
6.0 °C
3... 10 °C
Temperature control hysteresis for the accumulator’s
lower part
Accumulator Lower part MIN
45.0 °C
30... 55°C
Minimum temperature for the accumulator’s lower part
Upper part hysteresis El. Heat.
2.0 °C
2... 10 °C
Additional hysteresis for el. heating resistor control.
Outdoor compens. of Acc. Upper
part
5.0 °
0... 10 °C
Outdoor compensation of the accumulator’s upper part
when the outdoor temperature drops to -20° C or below.
Calculated setting value:
Outdoor compensation
1
-30 -20 -10 0 10 20 30 outd.
°C
Outdoor compensation
10
5
Outdoor compensaion
of the accumulator’s
upper part
°C
Outdoor compensation of the accumulator’s upper part
when the outdoor temperature drops to -20° C or below.
Compensation grows linearly so that it is 0 at an outdoor
temp. of + 20° C and reaches the “Outdoor compens. of
Acc. Upper part” setting at an outdoor temp. of -20° C.
Maximum limit for the lower part
53
-10 -5 0 5 10 15 20
outd.
°C
°C
Maximum limit for
the lower part
55
54
The maximum limit varies from 53° C to 55° C:
- When the outdoor temperature is above +15°C,
the maximum limit is 53° C.
- When the outdoor temperature is below -5° C,
the maximum limit is 55 ° C.
- When the outdoor temperature is from +15° C to -5° C
the temp. limit changes linearly from 53° C to 55° C
.
Upper part setting
Calculate according to the formula: “Accumulator Upper part MIN” + Amount of outdoor com-
pensation
Status
You can check what asks for or prevents the compressor and / or electric heater from turning
on. Start and stop delays are also displayed. In addition, the running time / on of the compres-
sor and the electric heater is displayed.
