SR609C 1.5kW Solar Water Heater Controller for Compact Pressurized Systems

The SR609C 1.5kW Solar Water Heater Controller is an intelligent temperature control solution designed for compact pressurized solar water heating systems equipped with an electric backup heating element of up to 1500W. It provides convenient monitoring and control of water temperature while automatically managing supplementary electric heating when solar energy alone cannot achieve the desired temperature.

Operating from a 230V AC, 50Hz power supply, the controller uses an NTC temperature sensor to monitor storage tank temperature and control the connected electric heating element. Automatic and manual heating functions make it suitable for homes, apartments, hotels, institutions, and commercial properties using pressurized solar hot-water systems.

Product Features

Supports Up to 1.5kW Electric Heating

Designed to control an electric backup heating element rated at up to 1500W, providing supplementary heating when solar energy is insufficient.

Intelligent Temperature Control

Continuously monitors water temperature and manages the electric heating element according to the configured operating settings.

Automatic Heating Control

Supports automatic electric heating, allowing the controller to maintain the required hot-water temperature without continuous manual operation.

Manual Heating Function

Allows users to activate supplementary electric heating manually whenever additional hot water is required.

0–100°C Temperature Measurement Range

Supports storage tank temperature measurement from 0°C to 100°C, providing a broad monitoring range for solar hot-water applications.

±2°C Temperature Measurement Accuracy

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

NTC10K Temperature Sensor

Supports an NTC10K B3950 temperature sensor for monitoring the storage tank temperature.

LCD User Interface

The controller provides a convenient display and controls for monitoring system operation and adjusting supported heating settings.

Low Controller Power Consumption

The controller itself requires only a small amount of electrical power during operation, helping maintain efficient system control.

Designed for Pressurized Solar Water Heaters

Suitable for integrated compact pressurized solar water heating systems, providing centralized control of the electric backup heater and temperature monitoring.

Wall-Mounted Compact Design

Its compact housing allows convenient wall installation near the solar water heating system or another suitable protected location.

Product Specifications

• Product Type: Intelligent Solar Water Heater Controller
• Model: SR609C
• System Type: Compact Pressurized Solar Water Heating System
• Maximum Electric Heater Load:5kW / 1500W
• Power Supply: AC 230V ±10%
• Frequency: 50Hz
• Temperature Measurement Range: 0°C–100°C
• Temperature Measurement Accuracy: ±2°C
• Primary Temperature Sensor: NTC10K, B3950
• Sensor Temperature Rating: Up to 135°C
• Electric Heater Output: H1
• Relay Output: R1
• Secondary Temperature Sensor: Optional T2
• Ambient Operating Temperature: -10°C to 50°C
• Protection Rating: IP40
• Heating Control: Automatic and Manual
• Installation: Wall Mounted
• Compatible Heater Rating: Up to 1500W
• Controller Dimensions: Approximately 187 × 128 × 46mm
• Application: Solar Hot Water Temperature Monitoring and Electric Booster Heating Control
• Suitable For: Homes, Apartments, Hotels, Schools, Institutions and Commercial Solar Water Heating Systems