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Solar System Controls and Accessories
The SCU solar system control series offers
options for any type of system, from basic single-
load installations to complex multi-load systems
with demanding requirements. With their large
LCD displays, SCU controls are user-friendly and
provide industry leading solar system safety,
performance and effi ciency.
All controls incorporate variable speed pump
control, preprogrammed confi gurations, collector
glycol cooling function, heat rejection loop control,
energy meter and VBus accessories. The SCU
345 control also provides data logging to an
internal SD memory card, and an optional SEM
fl ow meter kit can be added for precise energy
metering or used as a standalone unit.
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SD
With SD card capabilities*, the
SCU345 control allows you to
view system data on your PC.
Adjustable logging intervals from
one second to 20 minutes.
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Solar System Controls and Accessories
SCU 124/SCU 224 solar system controls for
basic single- and multi-load systems
The SCU 124 and SCU 224 solar system
controls are ideal for basic systems with
two semiconductor relay outputs and four
sensor inputs. The single-load SCU 124
control features three basic, preprogrammed
system confi gurations for easy planning and
installation. For basic multi-load systems or
east-west collector arrays, the SCU 224 control
is an ideal choice. It features an additional
delta-T for control of second relay, as well as
10 preprogrammed system confi gurations for
ultimate installation fl exibility.
SCU 345 solar system control for multi-load,
east-west and commercial arrays
The SCU 345 is an advanced solar system
control for multi-load systems, east-west
collector arrays and commercial solar systems.
This advanced solar system control features
four relay outputs and adjustable delta-T
and time controlled thermostat functions for
limitless confi guration possibilities. The SCU
345 control is compatible with a number of
system accessories designed for system
monitoring, analytics and additional control
.
SCU 124/SCU 224 Solar System Control
SCU 345 Solar System Control
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V40 Flowmeter Kit includes two
sensors and two sensor wells.
For use with SCU 345 or SEM.
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Control Section Guide
Model
Relay outputs 2 2 4
Variable speed pump
Sensor inputs 4 4 5
System confi gurations 3 10 9
Number of heat loads (tanks) 1 2 3
Number of differentials 1 2 3
Heat dissipater layout
Energy meter
Pump hour counter
Collector cooling
Night tank cooling
V-Bus accessories
Internal SD card _ _
Flowmeter option _ _
*Field supplied.
SCU 124 SCU 224 SCU 345
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