Nibe SCU 10 - Factory Setting; Flow Meter

Freeze protection (liquid)
If anti freeze is selected, the temperature in the solar panels
(T1) and (T2) is maintained above the anti freeze temperature
(see below) by activating pump P1 or P2.
If the system is frost protected by for example glycol, this
function should not be used.
If liquid water is selected the frost protection is activ-
ated.
This function can be used to remove snow from the solar
panel and thereby increase efficiency. The liquid in the solar
coil is protected against freezing.
NOTE
You should not use this type of anti freeze where it is
regularly cold or cold for long periods.
Skyddsfunktioner -
Kollektor
Max temp 120°C
Kylning ja
Återkylning ja
överh.skydd ja
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Frysskydd temp 3°C
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Activate anti freeze by pressing (+)or(-). Select row
”Fluid“. Press
to activate the menu choice and then
(+) to activate the function.
႑
Now you can set the anti freeze temperature.
(Adjustable -20 °C to + 7 °C with default value 3 °C).
Flow meter
The flow meter is used for measuring energy and monitoring.
႑
If a flow meter is not installed (default setting), you must
set the flow (l/min) in the menu using (+) and (-). Inform-
ation about the flow can normally be found on the pump.
(Adjustable 1 to 100 l/min with default value 10 l/min.)
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If a pulsing flow meter is installed (input T6), select
“pulse”. Then the flow meter pulse value in litre/pulse
must be set using (+)or(-). (Adjustable 1 to 25 l/pulse
with default value 10 l/pulse.)
႑
If a pulse flow meter is used for energy measurement,
you should install a T5 sensor on the return to the collect-
or, to obtain a more accurate energy measurement.
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If analogue Grundfos (type VFS) flow meter is installed
(T5 & T6) select “GSD”. The actual value of the flow can
be found under “Manual testing” in the operations menu.
(See 3.2)
႑
See installation instructions for information about connec-
tion.
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Monitoring the flow
The flow in the system is also monitored if a flow meter is
not installed. The temperature difference between the solar
panel and the tank is used to indicate flow problems. If the
difference is greater than 60 °C, for longer than 30 minutes,
this is interpreted as a flow error. If a flow meter is installed
and a flow has not been measured for ten minutes after the
pump has started, a flow error is indicated. If the 60 °C/30
minimum criteria occurs, control stops and an error message
appears in the display. But if the flow meter indicates an error
this is only indicated in the display and control continues.
Factory setting
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If you wish to return to the default settings, select row
“Factory setting” and press
to activate the row. Then
select “yes” with (+).
႑
To return to the main menu press a few times.
15SCU 10
For the Installer
Menu Settings