The STECA Controller is the newer technology and offers benefits to both the system owner, and the servicing contractor.
The STECA is the brains of the Hot Water Solar, The 120V Grundfos pump is the heart of the system. The brain need information input, and that comes by 3 new temperature sensors.
These components describe the "120V Conversion" STECA upgrade.
1) STECA Controller
2) Grundfos Pump (or it might be a 120V TACO pump)
3) Unique Ohm Thermistors (aka temperature sensors).
Using the programmability of the Smart Controller (your solar company will set it up for you), and the Three Temperatures that get displayed, it is easy to see exactly what the system thinks is happening, and the decisions made on how to operate at optimal efficiency.
ALL the other hot water solar controllers have NO DIGITAL DISPLAY and no temperature outputs. You have no idea what it thinks the system temperatures are, and no idea of how it is trying to control the system. All the others are "Dumb Systems" that require guess work to fix problems, and guess work can be expensive!
The STECA also has a "Vacation Mode" which prevents the system from overheating when you are away for 3 or more days
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Steca TR 0301 U
3 inputs, 1 output
- Compact, multipart designer casing
- Graphical LC display with backlighting
- Animated representation of the systems and operating states
- Non-verbal menu navigation
Description
The
Steca TR 0301 U controller was specially developed for the North
American market based on the Steca TR 0301 basic controller. With its
special certification (ETL label) from a Nationally Recognized Testing
Laboratory (NRTL) in the US, the controller meets the safety standards
and minimum requirements of the North American market.
A feature
of the Steca TR 0301 series of controllers is the animated graphic
display, which offers a complete visualisation of the solar energy
system's operating status and solar circuit.
The clearly arranged
display ensures easy operation using pictograms. The controller was
jointly designed with an internationally renowned design centre. The
controller is used for monitoring and controlling solar thermal systems
with one collector array and one storage tank. In addition, the
controller performs important system monitoring and safety functions to
ensure safe and long-lasting operation of the entire system. The
numerous additional functions of the Steca TR 0301 U also include a
maximum storage tank temperature function, a tube collector function, an
anti-freeze function, a holiday and storage recool function as well as a
choice of temperature indications in either degrees Celsius (°C) or
Fahrenheit (°F). The operational safety of the system is supported by a
sophisticated fault diagnosis. The multi-coloured LCD backlighting
ensures quick and safe location of occurring errors and facilitates
quick troubleshooting.
The Steca TR 0301 U controller is supplied
with a pre-fitted US mains connection cable and a preinstalled,
pluggable pump output.
Features
Product features
- Compact, multipart designer casing
- Maximum storage tank temperature
- High level of operational safety through fault diagnosis
- Temperature display °C / °F
- Collector overtemperature disconnection
- Spring clamp terminals allow rapid and easy installation
Displays
- Graphical LC display with backlighting
- Animated representation of the systems and operating states
Operation
- Non-verbal menu navigation
- Side switch for manual, auto, off
Functions
- Holiday (storage tank recooling)
- Interval / tube collector
- Anti-freeze
- Display storage tank top
Downloads
Product data sheet
Manuals
Product pics, technical drawings, etc.
- Steca TR 0301 U product pic 3D · jpg, 300 DPI, high quality · 0.687 MB
- Steca TR 0301 U product pic 3D · jpg, 72 DPI, web quality · 0.223 MB
- Steca TR 0301 U product pic · jpg, 300 DPI, high quality · 0.512 MB
- Steca TR 0301 U product pic · jpg, 72 DPI, web quality · 0.177 MB
- Steca TR 0301 U product pic drawing · jpg, 300 DPI, high quality · 0.719 MB
- Steca TR 0301 U product pic drawing · jpg, 72 DPI, web quality · 0.343 MB
Technical data
| TR 0301 U | |
|---|---|
| | |
| System voltage | 120 V AC, 60 Hz |
| System voltage optional | 240 V AC, 60 Hz |
| Standby | 1.07 W [0.001 HP] |
| Temperature control class | I |
| Energy efficiency | 1 % |
| Number of inputs | 3 |
| Inputs | 3 x temperature (Pt1000) |
| Number of outputs | 1 |
| Output | 1 x switch output relay (R1), max. 400 W / 0.5 HP (120 V AC) or 800 W / 1 HP (240 V AC) |
| Line cord | 75 inch, 3 x 18 AWG at 221 °F |
| Turn-on temperature difference | 16 F |
| Turn-off temperature difference | 8 F |
| Ambient temperature | 0 °C [+32 °F] … +45 °C [+113 °F] |
| Degree of protection | IP 20 / DIN 40050 |
| Dimensions (X x Y x Z) | 160 x 157 x 47 mm [6.30 x 6.18 x 1.85 inch] |
| Weight | 350 g [12.35 oz] |
| Temperature sensors 2 x Pt1000 | 1.5 m [59 inch] silicone cable without bushing (measuring range up to +180 °C [+356 °F]) |
