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Minimum permitted speed: Here, you can restrict the pump
speed to ensure that the heating medium pump is not al-
lowed to operate at a lower speed in auto mode than the set
value.
Maximum permitted speed: Here, you can restrict the pump
speed to ensure that the heating medium pump is not al-
lowed to operate at a higher speed than the set value.
Speed in wait mode: Here, you set the speed the heating
medium pump will have in standby mode. Standby mode
occurs when heating operation is permitted but there is no
need for either compressor operation or electric additional
heat.
Hot water
Auto: Here, you set whether the heating medium pump is
to be regulated automatically or manually in hot water mode.
Manual speed: If you have opted to control the heating me-
dium pumps manually, you set the desired pump speed here
in hot water mode.
Pool
Auto: Here, you set whether the heating medium pump is
to be regulated automatically or manually during pool char-
ging.
Manual speed: If you have opted to control the heating me-
dium pumps manually, you set the desired pump speed here
during pool charging.
MENU 7.1.2.6 - OPERATING MODE BRINE PUMP
Operating mode
Alternative: Intermittent, Continuous, 10 days cont.
Intermittent: The brine pump starts approx. 20 seconds be-
fore or after the compressor. For groundwater systems, the
brine pump starts and stops 2 minutes before and after the
compressor respectively.
Continuous: Continuous operation.
10 days cont.: Continuous operation for 10 days. The pump
then changes to intermittent operation.
TIP
You can use "10 days cont." at start-up to obtain
continuous circulation during a start-up time in
order to make it easier to bleed the system.
MENU 7.1.2.7 - PUMP SPEED BRINE
Make settings for the brine pump's speed here.
Operating mode
Setting range: Fixed delta, Auto, Manual
Delta-T, fixed delta
Setting range: 2 - 10 °C
Manual
Setting range: 1 - 100 %
56
Chapter 9 | Control - Menus
Operating mode: Here, you set whether the brine pump is
to be controlled automatically, manually or with fixed delta.
Fixed delta: Here, you set whether the brine pump will be
controlled with fixed delta, e.g. for groundwater systems.
Manual: If you have chosen to control the brine pump
manually, you set the desired pump speed here.
Speed in wait mode, cooling: Here, you set the speed at
which the brine pump will operate in standby mode when
passive cooling is permitted.
MENU 7.1.2.8 - BRINE ALARM SETTING
Automatic reset
Alternative: on/off
Alarm temperature
Setting range: -12 – 15 °C
Max brine in
Setting range: 10 – 35 °C
Automatic reset: Select "automatic reset" if you want S1156
to start automatically after brine alarm.
Alarm temperature: Here, you set the temperature at which
the heat pump will activate the alarm for low temperature
in outgoing brine.
If "Automatic reset" is selected, the alarm resets when the
temperature has increased by 1 °C above the set value.
Max brine in: Here, you set the temperature at which the
heat pump will activate the alarm for high temperature in
the incoming brine. During start-up, it is permitted for a
limited time to have a temperature of 5 °C above "Max brine
in".
MENU 7.1.3 - COMPRESSOR
This menu contains sub-menus where you can make ad-
vanced compressor settings.
MENU 7.1.3.1 - BLOCKFREQ
Block freq 1 and 2
Setting range start S1156-8 start: 25 – 101 Hz
Setting range stop S1156-8 stop: 30 – 106 Hz
Setting range start S1156-13 start: 20 – 90 Hz
Setting range stop S1156-13 stop: 25 – 95 Hz
Maximum setting range: 50 Hz
Here you can set a frequency range where the compressor
is blocked. The limits for the setting range can differ depend-
ing on model of heat pump.
NOTE
A large blocked frequency range can cause the
compressor to run jerkily.
NIBE S1156
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