Steca Controllers

Steca has long stood for ideas and innovations as an electronic manufacturing services (EMS) provider and manufacturer of Steca brand product lines in solar electronics and battery charging systems.

TR 0301 U

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.

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 LCD 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

TR A501 T U

The Steca TR A501 T U solar thermal controller has been developed to be especially efficient in the widest possible range of aplications. It is an ideal solution for all single-circuit systems. The compact designer casing can be superbly integrated into solar stations, but can of course also be installed on walls or top-hat rails.

The Steca TR A501 T U controller is especially suitable for monitoring and controlling solar thermal systems with a single collector array or simple solar-heated swimming pools. Alternatively, numerous pre-programmed configurations are provided for individual use in other applications, such as back-up heating, solid fuel boilers, thermostats, differencial thermostats / storage tank reloading, return increases and circulation systems.

Product Features

  • Compact, multipart designer casing
  • Installation versions: Solar pump stations, wall installation, mounting rails
  • Wave packet (Triac) and pulse width modulation (PWM) ensure electronic RPM control
  • High level of operational safety through fault diagnosis
  • Hours-of-operation logger
  • Software update possible
  • Daily pump start
  • Screw terminals allow universal and rapid installation
  • Low power consumption thanks to universal and widerange switched-mode power supply
  • Variable input voltage range for worldwide controller deployment
  • Electronic overloading control and protection

Displays

  • Multifunction graphical LCD display with backlighting
  • Animated representation of the systems and operating states

Operation

  • Non-verbal menu navigation
  • Manual switch for manual, auto, off

Functions

  • Heat quantity (pulse generator, determination)
  • Display showing CO2 savings
  • Reduction of stagnation phases
  • Holiday (storage tank recooling)
  • Storage tank quick charge
  • Interval / tube collector
  • Anti-freeze
  • Display storage tank top

TR A503 TTR U

The Steca TR A503 TTR extends the functionality of this series of devices by providing additional system monitoring functions. Data can be stored on standard MicroSD cards and Internet visualisation is possible via the Steca TK RW2 IFA router. When used in conjunction with an external pressure sensor, the “System pressure monitoring” controller function provides additional system monitoring. An additional controller output that can be individually customised for additional controller functions is also provided.

Product Features

  • Compact, multipart designer casing
  • Installation versions: Solar pump stations, wall installation, mounting rails
  • Wave packet (Triac) and pulse width modulation (PWM) ensure electronic RPM control
  • High level of operational safety through fault diagnosis
  • Hours-of-operation logger
  • Software update possible
  • Daily pump start
  • Screw terminals allow universal and rapid installation
  • Low power consumption thanks to universal and widerange switched-mode power supply
  • Variable input voltage range for worldwide controller deployment
  • Electronic overloading control and protection
  • Communication interface for Internet visualisation using a Steca TK RW2 IFA router

Displays

  • Multifunction graphical LCD display with backlighting
  • Animated representation of the systems and operating states

Operation

  • Non-verbal menu navigation
  • Side switch for manual, auto, off

Functions

  • Data logging to a MicroSD card
  • Heat quantity (Grundfos Direct Sensors™, pulse generator, determination)
  • Display showing CO2 savings
  • System pressure monitoring (e.g. Grundfos Direct Sensors™)
  • Reduction of stagnation phases
  • Active cooling (e.g. to avoid stagnation)
  • Holiday (storage tank recooling)
  • Circulation (controlled by temperature / time)
  • Back-up heating
  • Solid fuel boiler
  • Storage tank quick charge
  • Thermostat
  • Differential thermostat
  • Interval / tube collector
  • Anti-freeze
  • Display storage tank top
  • Alarm output

TR 0603 MC U

The Steca TR 0603mc U controller was specially developed for the North American market based on the Steca TR 0603mc U 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.

Product Features

  • Compact, multipart designer casing
  • Electronic speed control
  • High level of operational safety through fault diagnosis
  • Hours-of-operation logger
  • Software update possible
  • Storage tank target temperature loading
  • Seasonal systems (loading of pool / storage tank according to the time of the year)
  • Daily pump start
  • Plug & play for 120 V AC mains and pump connections in installation casing
  • Screwed connections facilitate fast sensor installation
  • Integrated Steca TPC 1 bus

Displays

  • Multifunction graphical LCD display with backlighting
  • Animated representation of the systems and operating states

Operation

  • Multilingual menu navigation
  • Side switch for manual, auto, off

Options

  • Installation casing with 1/2 inch cut-outs as an alternative to plug & play

Functions

  • Data logger on SD card
  • Heat quantity (Grundfos Direct Sensor™, pulse generator, determination)
  • Heating return increase
  • Reduction of stagnation phases
  • Holiday (storage tank recooling)
  • Circulation (controlled by temperature / time / pulse)
  • Back-up heating
  • Solid fuel boiler
  • Storage tank quick charge
  • Bypass
  • Thermostat
  • Differential thermostat
  • Timer
  • Interval / tube collector
  • Anti-freeze
  • Anti-legionella cyclical storage tank heating
  • Display storage tank top
  • Alarm output
  • Two loading zones