SR609C 3kW Pressurised Solar Water Heater Controller

The SR609C 3kW Pressurised Solar Water Heater Controller is an intelligent temperature and electric booster heating controller designed for pressurised solar water heating systems. It monitors the temperature of water in the storage tank and automatically controls supplementary electric heating when solar energy alone is insufficient to achieve the desired water temperature.

Designed to support electric heating elements of up to 3,000W, the SR609C is suitable for residential and commercial solar hot-water installations requiring a higher-capacity backup heating solution. Its temperature monitoring, automatic heating, manual heating, programmable operation, and user-friendly interface provide convenient control of hot-water availability throughout the day.

Product Features

Supports Up to 3kW Electric Heating

Designed to control electric booster heating elements rated at up to 3kW / 3000W, making it suitable for higher-capacity solar water heating systems.

Intelligent Temperature Control

Monitors the storage tank temperature and controls supplementary electric heating according to the configured temperature settings.

Automatic Electric Booster Heating

Automatically activates the electric heating element when required, helping maintain the desired water temperature when available solar heating is insufficient.

Manual Heating Function

Allows the electric booster heater to be activated manually when additional hot water is required outside the programmed heating periods.

Programmable Heating

Supports timed heating operation, allowing electric backup heating to be scheduled around expected hot-water requirements.

0–100°C Temperature Measurement

Provides a 0°C to 100°C tank temperature measurement range, allowing effective monitoring across typical solar water heating conditions.

±2°C Temperature Measurement Accuracy

Provides temperature measurement accuracy of approximately ±2°C for dependable monitoring and control.

NTC10K Temperature Sensor

Uses an NTC10K B3950 temperature sensor for monitoring the water temperature inside the storage tank.

Low Power Consumption

The controller itself consumes less than 3W, providing efficient monitoring and management of the solar water heating system.

230V AC Operation

Designed for a 230V AC ±10%, 50Hz electrical supply, making it suitable for compatible residential and commercial electrical installations.

User-Friendly Interface

Provides an accessible control interface for monitoring temperature and adjusting supported heating functions and operating parameters.

Designed for Pressurised Solar Water Heaters

Suitable for compact and integrated pressurised solar water heating systems using an electric element for supplementary heating.

Product Specifications

• Product Type: Solar Water Heater Controller
• Model: SR609C
• System Type: Pressurised Solar Water Heating System
• Maximum Electric Heater Load: 3kW / 3000W
• Suitable Electric Heater Power: Up to 3kW
• Power Supply: AC 230V ±10%
• Frequency: 50Hz
• Controller Power Consumption: Less Than 3W
• Temperature Measurement Range: 0°C–100°C
• Temperature Measurement Accuracy: ±2°C
• Primary Sensor: T1 – NTC10K B3950
• Sensor Temperature Rating: Up to 135°C
• Secondary Sensor: T2 – Optional
• Electric Heater Output: H1
• Additional Output: R1 Relay
• Ambient Operating Temperature: -10°C to 50°C
• Protection Rating: IP40
• Heating Control: Automatic and Manual
• Timed Heating: Supported
• Installation Type: Wall Mounted
• 3kW Controller Dimensions: Approximately 205 × 150 × 50mm
• Application: Temperature Monitoring and Electric Booster Heating Control
• Suitable For: Homes, Apartments, Hotels, Schools, Institutions and Commercial Solar Water Heating Installations