Pump Control - Sonnenkraft SKSC2HE Manual Del Usuario

AHMN:
Comfort temperature
Adjustment range:
0,0 ... 95,0 °C
Factory setting: 40,0 °C
MOD:
0-10 V modulation
Adjustment range:
On / OFF
Factory setting: OFF
TMIN:
Minimum tem perature
boiler
Adjustment range:
1 ... 50 °C
Factory setting: 10 °C
TMAX:
Maximum tem perature
boiler
Adjustment range:
1 ... 100 °C
Factory setting: 45 °C
DIFF:
Difference
Adjustment range:
2 ... 20 K
Factory setting: 7 K

4.1.25. Pump control

PuM1, PuM2:
Pump control
Adjustment range:
OnOF / PuLS / A / b / C / E
Factory setting PuM1: b
Factory setting PuM2: OnOF (Arr 2, 8, 10)
b (Arr 6, 7)
56
Example:
At at temperature of TMIN = 10 °C, a voltage of
1 V is supplied. At a temperature of TMAX = 70 °C,
the voltage is 10 V. The curve is to be adapted to
the heat generator used.
If the temperature falls below the switch-on
temperature AH O, boiler demand will be ac-
tivated. If the switch-off temperature AH F is
exceeded, the boiler demand will be switched
off. S3 is used as the reference sensor.
The boiler set value is calculated from the sum
of AH F+DIFF.
Boiler demand can only be carried out if the
boiler temperature is smaller than TMAX-DIFF.
As soon as the boiler temperature at the refer-
ence sensor S4 is higher than the temperature
at the store sensor S3+DIFF, the boiler loading
pump will be switched on via the relay R2.
Afterheating through thermostat function
(MOD = OFF):
If the temperature falls below the switch-on
temperature AH O, R2 will be activated. If the
switch-off temperature AH F is exceeded, after-
heating will stop. S3 is used as the reference
sensor.
is shown on the display if the second relay
output is activated.
Afterheating suppression
During solar loading, the afterheating is sup-
pressed until the temperature at S3 falls below
the comfort temperature AHMN. If the parame-
ters AHMN and AH O are both set to the same
value, the function is deactivated.
This parameter is used for selecting the pump
control type for speed control.
If OnOF is selected, the relay will be switched
on or off (no speed control). If PuLS is selected,
speed control takes place via burst control for
standard pumps. For controlling high-effi ciency
pumps, the following types can be selected:
A: Wilo solar pump
B: Grundfos solar pump
C: Laing solar pump
E: Grundfos heating pump
The PWM control signal of a high-effi ciency
pump is to be connected to the terminals PMW1
and PMW2 (0-10 V) respectively. Power supply
is at the outputs of relay 1 and 2 respectively.
In order to reduce the number of switching
processes for high effi ciency pumps, the corre-
sponding relay will remain switched on for an
hour after the switch-off conditions have been
fulfi lled.
GB