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Steca TR A301 User Manual

Steca TR A301
48 pages
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SOLARTHERMIE - SOLAR THERMAL SYSTEMS - SOLAR TÉRMICO - SOLAIRE THERMIQUE - SOLARE TERMICO
Installation and operating instructions
Temperature difference controller
3 inputs, 1 PWM control signal for an ECM pump
738.955 | Z01 | 10.40 | Subject to change due to technical improvements!
EN
These operating instructions are part of the product.
Read the instructions carefully before use,
keep them over the entire lifetime of the product,
and pass them on to any future owner or user of this product.
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Steca TR A301 Specifications

General IconGeneral
TypeSolar charge controller
Rated Current30 A
Temperature CompensationYes
ApplicationOff-grid solar systems
PWM outputYes
Data loggingNo
Enclosure protectionIP 32
Max. load current30 A
Nominal Voltage12 V / 24 V (automatic detection)
DisplayLCD
InputsPV
OutputsBattery Output, Load Output
Battery typeLead Acid, Gel, AGM
Protection featuresOverload, short circuit, deep discharge, reverse polarity
Operating temperature range-20 to +50 °C

Summary

Safety

2.1 Proper usage

Details the correct and intended use of the temperature difference controller within permissible ambient conditions.

2.3 Dangers during assembly / commissioning

Outlines critical safety hazards during installation, connection, and operation, including electrocution and fire risks.

Installation

4.2 Installation

General instructions for the physical installation and mounting of the controller, including warnings about damp environments and drilling precautions.

4.3 Electrical connection

Covers essential steps and precautions for wiring the controller to power and sensors, including cable feed preparation and connection methods.

Commissioning

6.1 Testing the pump

Step-by-step guide to test the pump operation after installation, including connecting mains supply and setting the operating switch.

Description of the controller functions

7.1 Switch-on / switch-off temperature difference

Explains the core logic for pump activation based on temperature differentials between collector and storage tank.

7.2 Maximum storage tank temperature

Describes the function preventing the storage tank from overheating by stopping charging.

7.3 Maximum collector temperature

Details the protection mechanism against excessive collector temperatures, stopping the pump to prevent fluid evaporation.

Operation

Maintenance

9.1 Causes of problems

Helps diagnose and resolve common issues encountered with the controller and system, such as blank display or pump malfunction.

Technical data

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