24 NIBE BA-SVM 10-200
Circulation pumps
Heating medium pump (GP12)
The heating medium pump GP12 is active if heat pro-
duction is permitted and intermittent is not selected
in menu 5.11.1.2.
Heating
A diagram is created for a certain DOT to optimise
the energy transfer (in this case -20 °C). The diagram
shows target delta-T for three different climate sys-
tems.
16
14
12
10
8
6
4
2
0
-30 -20 -10 100 20
Golvvärme
Delta T
Radiator
Radiator + Golvvärme
tomhustemperatur
Temperaturdierens klimatsystem
(°C)
General formula:
Delta = (DT-max / DOT - Stop-heating) x (BT1 -
Stopheating)
Constants Under floor
heating
(°C)
Radiator
(°C)
Under floor
heating
+
Radiator
(°C)
Stop-heat-
ing
15 15 15
DT-max 15 10 7
DUT -20 -20 -20
DT-min 4 4 4 (inverters)
7 (on/off
machines)
Determining the speed using regulator:
• For AMS 10, control is locked and run at the last
calculated speed whilst defrosting is initiated but
no actual defrosting has started yet.
• During compressor operation only, BT12 and BT3
are used in EB101 for calculation.
• During operation with compressor and when in-
ternal electric additional heat EB1 is activated,
BT12 and BT3 are used in EB101 for calculation.
30 % is the minimum permitted speed when the
internal electric additional heat EB1 is active.
• During operation with only internal electric addi-
tional heat EB1 is used BT63 for BA-SVM 10-200
and BT3 for EB101 for calculation. 30 % is the
minimum permitted speed when the internal
electric additional heat EB1 is active.
• When shifting between different demands (e.g.
heating-hot water), starting the compressor and
replacing controlling sensors, GP12 starts at the
highest of the read-off values in the graph (Pump
speed at start) and at the speed the new demand
had the last time it was run. This applies to all
demands (heating, hot water, pool and cooling).
This speed is then locked for 2 minutes.
Section 4 | Description of functions
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