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Steca/Solene Digital Solar Control Package includes line cord, outlet and two sensors
   Model: TR0301U
Steca/Solene Digital Solar Control Package includes line cord, outlet and two sensors
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    Steca ControlSteca/Solene TR 0301 U
    Temperature Differencial Controller

    3 Inputs
    1 Output

    Model TR 0301 U differential temperature control provides automatic, safe and reliable operation of domestic solar water heating systems.

    The TR 0301 U output is wired to a pump that circulates the heat transfer fluid between the solar thermal collectors and the storage tank during the course of the day.

    This microprocessor-based TR 0301 U utilizes two RTD (resistance temperature detector) type sensors to monitor collector and tank temperatures with digital accuracy.

    The LCD gives the homeowner a variety of real time information including system temperatures at up to three separate locations. The consistent use of simple pictograms ensures ease of operation and troubleshooting.

    In addition to the primary function of turning the circulating pump on and off during the day, the TR 0301 U provides important diagnostic and safety functions. For example, the LCD pictograms will indicate fault conditions such as sensor shorts or pump failures. The installation manual also clearly describes the fault symptoms, possible causes and remedies.

    The TR 0301 U features a total of three inputs for recording temperature and one 120 VAC output for the circulating pump. Varistors protect the sensor inputs against high voltage spikes. The load side is fuse protected. The control package includes two RTD type sensors, a seven foot line cord and a spare fuse.

    An optional third sensor displays the upper tank temperature and eliminates the need for an analog thermometer and fittings. The numerous additional features of the TR 0301 U include an adjustable high limit (32° F - 205° F), an evacuated tube collector function, vacation overheat protection to minimize collector stagnation, and a freeze-recirculation option.

    Temperatures can be displayed in either Fahrenheit (°F) or Celsius (°C).

    Product Features
    Digital accuracy
    LCD provides real time operating temperatures up to 3 locations
    Animated representation of system operation
    Sophisticated monitoring and fault diagnostics
    Fused output protection for pump circuit
    Varistor high voltage spike protection
    RTD type 1000 Ù sensors
    Adjustable high limit temperature of storage tank
    Evacuated tube & freeze recirculation functions
    Vacation overheat protection
    Accessible side-mounted on, off, auto switch
    Three temperature sensor inputs, one 120 VAC output
    Pump protection activated when collector reached 266 °F

    Steca/Solene Controller Technical Data TR 0301 U
    Operating voltage 120 VAC, 60 Hz
    Self consumption = 0.001 HP
    3 inputs for temperature recording Pt1000

    1 output

     

    Fuse protected

    Switch relay; Switching performance max. 0.5 HP (120 V~); 1 HP (240 V~)

    Fuse: Littelfuse 215.004

    Line cord 7', 18 AWG rated at 221 °F
    Display Animated LCD display, 2-color background
    Protection class IP 20/DIN 40050
    Permitted ambient temperature 32 to +113 °F (0 to +45 °C)
    Installation Wall-mounted with screws
    Weight 19.54 oz (0.55 kg) include cable
    Case Recyclable 3-piece plastic case
    Dimensions 6.3'(W) x 6.18'(H) x 1.85'(D) (160 L x 157 B x 47 H mm)
    Temperature sensors 2x Pt1000-Probe

    NOTE: Control and Sensors utilize a 1,000 Ohm (1K) input; Ohms increase as temerature increases.  10k controls and/or sensors are not compatible or interchangable wih Steca/Solene.

    Collector sensor: 59 inch (1.5 m) silicone cable with bushing (Measuring range up to +356 °F (+ 180 °C))

    Donwload PDFs »

    Steca Solar Control Owner's Manual
    Steca Solar Control Specifications

    Steca Solar Control Diagram

    Product Manufacturer: Steca GmbH
    _______________________________________________________

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