36
Pump kick
To prevent the pump from seizing up, for
example during summer, 24 hours after the
pump was last switched OFF, it will be started
for 10 s. This applies to all pumps.
Heating circuit pump control with connected
FE 7/FEK remote control unit
In conjunction with the FE 7 of FEK remote
control unit, the respective heating circuit
pump is switched OFF and the mixer moves
to "Closed" in accordance with the switching
condition:
-
ACTUAL room
>-
SET room
+ 1K
This only applies if the room sensor influence
is set to K > 0. Reverse control is subject to the
following condition:
-
ACTUAL room
<-
SET room
The summer mode also becomes effective for
the respective heating circuit when operating
with a FE 7 or FEK remote control unit.
B-PUMP CONST
When using a buffer cylinder, set this
parameter to OFF.
FIXED VALUE
Fixed value temperature
The heat pump return is regulated to a fixed
temperature. The switching time program will
then be ignored. The various program switch
positions will then only affect the mixer circuit
(if installed). The frost protection is activated
and the compressor is switched OFF, when the
program selector is set to "Standby and DHW"
and a fixed temperature has been selected.
Summer logic remains disabled with fixed
temperature control. This means, that the
heating circuit pump is not switched OFF for
the direct heating circuit.
With the flap closed, the display shows the
fixed temperature program, in other words
always heating times.
SOURCE
Frost protection for brine/water heat pumps
The heat pump can only be operated as brine/
water heat pump.
Ethylene glycol as brine (including
polypropylene glycol) means that the heat
pump frost protection is disabled. Responses
by the frost stat no longer have any effect.
Potassium carbonate as brine
(STIEBEL-ELTRON process medium, part no.
18 54 72) means, that the heat pump frost
protection is disabled. This only
ensures, that the source pump is started at an
outside temperature of –10 °C, even if the heat
pump is idle. It is switched OFF again at an
outside temperature of – 8 °C.
ALM 0, 30, 60, 120 and 180
(only in conjunction with the
extractor module LWM 250)
At a brine inlet temperature of < 10 °C, a
regeneration of the heat source system can be
implemented in conjunction with the extractor
module and ethylene glycol or propylene
glycol as brine.
Settings enable the determination of the
run-on time of the brine pump, after the heat
pump has been shut down.
The values stated correspond to the run-on
time in minutes at an average brine inlet
temperature of 0 °C.
Setting Brine pump run-on time
ALM 0 1 minute
ALM 30 30 minutes
ALM 60 60 minutes
ALM 120 120 minutes
ALM 180 180 minutes
If the brine inlet temperature rises, the
0 5 10 15 20 25 30 4035 45 50 55 60
Dauerlauf
5
7
10
15
25
Pausen in min
Pause
Außentemperatur
< -10 °C
-10 °C
-5 °C
0 °C
5 °C
10 °C
Zeit in minPumpenlaufzeit
26_03_01_0096
Parameter 9 PUMP CYCLES
PUMP CYCLES
Heating circuit pump control
The PUMP CYCLES parameter only applies to
the direct heating circuit 1, i.e. for heating
circuit pump 1.
The parameter can be set to ON or OFF. In
setting OFF, the heating circuit pump will not
cycle. It will run permanently and only be
switched OFF in summer mode.
The heating circuit pump start will be
controlled in accordance with a fixed
temperature curve of the outside temperature,
as soon as this parameter is set to ON.
The heating circuit pump start pulse is always
5 minutes.The heating circuit pump for HC 1
always begins with each heat pump start. The
pump runs on for 5 minutes after the heat
pump has been switched OFF.
Now the start-up duration is brought to
bear, e.g. at an outside temperature of 5 °C,
the pump starts three times per hour for 5
minutes respectively.
9 10
11
12
Outside temperature
Constant
operation
Time in min
pump runtime
OFF duration in min
OFF duration
0
50
100
150
200
250
300
350
400
-6-5-4-3-2-1012345678910
Min.
Brine inlet
temperature [°C]
C26_03_01_0169
Parameter 12 (brine pump run-on time with extractor module)
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