kWh
Collector
2 st. tank
East/West
1 st. tank
Collector
1 st. tank
40
Steca Suntana 2
The microprocessor-controlled Suntana 2 controller is
used for monitoring and controlling of solar thermal energy
systems having two differently aligned collector arrays and
a maximum of two domestic hot water and buffer storage
tanks. The system parameters and measured values can
be viewed and modified via a 2 x 16-digit menu-driven
LCD-Display. The amount of solar energy fed from the
collector array into the storage tank can be read from
the LCD-Display at any time, thanks to a flow meter with
pulse output. The integrated hours of operation logger
is used to automatically monitor both controller outputs
and provides extra operational safety for your solar energy
system. The controller has a maximum of five inputs for
temperature measurement, a digital pulse input for
recording heat volume data, and two outputs for
controlling pumps or a switching valve.
Features
Pump-pump or pump-valve control of:
· 2-storage tank systems with storage tank
priority switching
· 2-collector systems with east/west
orientation
· 2 completely separate solar systems
· Heat volume meter and hours-of-operation
logger
· Storage of minimum and maximum
temperature values
· Speed control of the solar circuit pump
· Menu-driven LCD-Display
TECHNICAL DATA
TEMPERATURE DIFFERENTIAL
SUNDRA
System voltage
230 V (± 15 %), 50 Hz
[optional 115 V (± 15 %), 60 Hz]
Max. own consumption
1 W
Inputs
6
5 x temperature determination (Pt1000 or
KTY81-210)
1 x pulse detection for calorimetry
Output
2
1 x R1 triac for speed control, max. 200 W
[230 V]
1 x R2 switch output relay, max. 800 W [230
V] or R2 voltage free
Turn-on temperature difference
4 ...17 K
Turn-off temperature difference
2 ...15 K
Operation temperature range
0 °C ...+45 °C
Display
LCD-Display
Protection class
IP 20 / DIN 40050
Weight
490 g
Dimensions l x w x h
150 x 215 x 44 mm
6
INPUTS
2
OUTPUT
SYSTEM EXAMPLES
215
44
152
SOLAR THERMAL CONTROLS
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