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General| Grundfos Direct Sensor™ | Yes |
|---|---|
| PWM/0-10 V outputs | 2 |
| Housing | Plastic |
| Enclosure protection | IP 20 |
| Standby consumption | < 1 W |
| Relay outputs | 4 |
| Data/Communication interface | Modbus RTU |
| Temperature sensors | 4 PT1000 |
| Inputs | 4 PT1000, 1 Grundfos Direct Sensor™ |
| Outputs | 4 relay, 2 PWM/0-10 V |
Covers appropriate usage, local regulations, and safety precautions.
States compliance with European directives and relevant standards.
Lists included items and key technical specifications of the controller.
Illustrates typical solar system configurations for the DeltaSol C/4.
Procedures for physically attaching the controller to a wall or panel.
Details wiring for power supply, sensors, and external modules.
Details the wiring for standard solar system connections.
Details wiring for solar systems with afterheating.
Explains controller operation via buttons and the system monitoring display overview.
Covers channel display, toolbar symbols, and the system screen for monitoring.
Describes the two system arrangements (Arr 1 and Arr 2) for initial setup.
Lists all available control parameters and display channels with their descriptions and page references.
Details settings for collector, store, and other temperatures, plus time configuration.
Configuration and display of pump speed and accumulated operating hours.
Covers heat quantity calculation using flow rate, sensors, and antifreeze settings.
Explains differential control for pump operation and speed adjustment based on temperature differences.
Sets the maximum allowable temperature for the storage tank.
Sets the temperature for collector emergency shutdown to protect against overheating.
Manages system cooling to prevent overheating and thermal relief of components.
Ensures the solar pump only switches on above a minimum collector temperature.
Activates protection against freezing or coagulating of the heat transfer fluid.
Manages collector cooling and uses temperature increases for fluid detection.
Explains thermostat operation for after-heating or surplus energy usage.
Details how minimum pump speed is allocated and how to deactivate speed control.
Explains how to manually adjust the operating mode for control and service work.
Allows selection of the display language from German, English, Italian, or French.
Describes how sensor defects are indicated and how to check sensor resistance.
Addresses pump overheating, no heat transfer, and repeated pump cycling.
Troubleshoots delayed pump startup and problems with collector circuit heat dissipation.
Addresses issues like calcification or blockage of heat exchangers.
Checks nighttime pump activity, collector temperature, and store insulation effectiveness.
Evaluates warm water outflow, circulation run times, and controller fuse integrity.
Details the range of high-precision platinum temperature sensors available.
Recommends installing overvoltage protection to prevent damage from lightning or surges.
Disclaimer regarding the accuracy and use of manual content.
Defines copyright and usage terms for the manual.
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