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Sorel LTDC - User Manual

Sorel LTDC
36 pages
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Temperature difference controller LTDC
Installation and operating instructions
Read carefully before installation, commissioning and operation

Table of Contents

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Summary

Safety Instructions

Description LTDC

About the Controller

Describes the LTDC's purpose and intuitive handling for solar/heating systems.

Specifications

Electrical Specifications

Details power supply, consumption, fuse, protection, and voltage categories.

Inputs and Outputs

Describes sensor inputs, VFS/RPS types, and measuring ranges.

Hydraulic Variants

Installation

Electrical Terminals

Details the wiring connections for low voltage and mains voltage.

Wall Installation

Electrical Connection

Installing Temperature Sensors

Operation

Display and Input

Explains the display elements, LEDs, and key functions for user interaction.

Commissioning Help

Measurement Values

Statistics

Operating Mode

Settings

Temperature Settings

Includes Tmin S1, Tmax S2, Tmin Storage X, Priority Storage X.

Differential Temperature Settings

Covers AT Solar Storage X and related parameters.

Priority Temperature and Loading

Protective Functions

System Protection

Prevents overheating by shutting down circulation pumps.

Collector Protection

Cools the collector via storage if overheating is detected.

Special Functions - Program and Pump

Pump Settings

Configures 0-10V or PWM pump control parameters.

Special Functions - Speed and Relay

Pump Speed Control

Adjusts pump speed based on process conditions.

Speed Control Variants

Defines operating modes (M1-M4) for variable speed pumps.

Solar Bypass Function

Manages bypass valve or pump for flow redirection.

Special Functions - Thermostat and Cooling

Thermostat Control

Enables time and temperature controlled additional heating.

Cooling Function

Manages cooling storages to a specific setpoint temperature.

Special Functions - Flow and Field Cooling

Return Flow Increase

Increases return temperature by routing flow through storage.

Field Cooling

Controls an external unit to cool the collector.

Special Functions - Heat Transfer and Difference

Heat Transfer

Enables energy loading from one storage to another based on temperature differences.

Difference Control

Activates relays based on preset temperature differences.

Special Functions - Solid Fuel Boiler and Errors

Solid Fuel Boiler Control

Manages heating energy transfer from a solid fuel boiler to storage.

Special Functions - Booster and Parallel Operation

Special Functions - Room Sensor and Heat Quantity

Heat Quantity Metering

Configures parameters for calculating heat quantity.

Sensor Calibration

Commissioning Procedures

Starting Aid Function

Advanced Settings

Menu Lock

Service Values

Malfunctions and Maintenance

Possible Error Messages

Lists common error messages and their meanings for specialists.

Appendix - Pump Control

Speed Control Parameters

Sets maximum speed, minimum speed, and speed display logic.

Technical Data - PWM and 0-10 V Signals

Tips for Operation

Sorel LTDC Specifications

General IconGeneral
BrandSorel
ModelLTDC
CategoryTemperature Controller
LanguageEnglish

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