Language
Language
Heater solar water 2
Commercial Solar Water Heater Control Cabinet is a fully automated system for centralized solar hot water projects, managing circulation, tank temperature, auxiliary heating, and safety protection for reliable commercial hot water supply.
Commercial Solar Water Heater Control Cabinet is designed for automated and centralized solar hot water systems, delivering stable, intelligent, and energy‑efficient control for commercial and engineering projects. It is an ideal solution for hotels, hospitals, apartments, schools, dormitories, and industrial hot water applications.
Built with industrial‑grade components and flexible control logic, this system ensures reliable hot water supply, optimized energy use, and long‑term operational safety.
●Main unit power consumption: < 5W (excluding electric heating, water pump, and solenoid valve)
●Working voltage: AC 220V/380V ±10%, 50Hz
●Solenoid valve specification: AC 220V
●Temperature measurement accuracy: ±2°C
●Temperature measurement range: 0~99°C
●Water level settings: Five levels
●Electric heating control power: (Customized according to customer requirements)
●Heat exchanger pump power (typical): 1500W (customizable based on customer requirements)
●Pipeline circulation pump power (typical): 1500W (customizable based on customer requirements)
Shows collector temperature, insulated tank temperature, pipeline temperature, insulated tank water level, constant-temperature tank temperature, constant-temperature tank water level, low temperature, current Beijing time, and working status. The system operation is clear at a glance.
When the tank water level drops to the lower limit, the controller automatically starts water filling. It will stop filling once the water reaches the preset upper limit. The upper and lower water level limits can be adjusted freely.
The large LED display shows collector temperature, insulated tank temperature, pipeline temperature, insulated tank water level, constant-temperature tank temperature, constant-temperature tank water level, low temperature, Beijing time, and working status. System operation is clear at a glance.
When the water level drops to the inlet level, the controller automatically starts water filling and stops when it reaches the preset upper limit. The upper and lower water level limits can be set freely.
Additionally, a three-time timed water filling function can be set, with time adjustable between 00:00–24:00.
● The system software has automatic fault detection and elimination. If water supply stops or water pressure is too low, the controller automatically cuts off the solenoid valve.
● The system has anti-dry sun protection to prevent sudden water entry after high-temperature dry exposure, avoiding vacuum tube rupture.
● The system has power-off memory. If power is cut during water filling, the controller remembers the working state and automatically continues water filling after power restoration until the stop level is reached.
Users can set the upper and lower temperature limits for electric heating. When temperature drops below the lower limit, electric heating starts automatically and stops when it reaches the upper limit.
A three-time timed heating function can also be set, e.g., at 17:00 every day the system checks the tank temperature and starts heating if it is below the preset upper limit.
● The system includes dry burn protection. When the tank has no water or water level is too low (20%), the system locks the electric heating. When heating is needed, it first checks the water level and fills to the protection level before starting heating.
● Electric heating can be controlled by time period to avoid unnecessary energy waste. Factory default is 06:00–23:59, adjustable as required.
The heat exchange circulation pump operates under differential temperature control. When collector temperature exceeds tank temperature by the set upper differential, the pump starts. When the temperature difference drops to the set lower differential, the pump stops.
● The system has anti-dry sun protection. If the temperature difference between the collector and tank exceeds 80°C, heat exchange stops to prevent vacuum tube rupture after high-temperature dry exposure.
● The system includes pump restart protection. After stopping, the pump will not restart within 3 minutes.
If water pressure is insufficient and a booster pump is installed, the controller automatically manages the booster pump operation (synchronized with the solenoid valve).
The pipeline circulation pump has three working modes, selectable based on user needs:
Mode 1: Time-Controlled Circulation
Set interval and running time. The pump starts at set intervals and runs for a set time.
Mode 2: Temperature-Controlled Circulation
When pipeline temperature falls below the set start temperature, the pump starts and runs for a set time.
Mode 3: Differential Temperature Circulation
When the temperature difference between the tank and pipeline exceeds the upper limit, the pump starts; it stops when the difference drops to the lower limit.
●The controller provides a mode selection setting (1, 2, 3).
●If the pipeline temperature sensor is not connected, the controller defaults to Mode 1, with default parameters: interval 4 hours, running time 8 minutes.
●Pump restart protection: the pump will not restart within 3 minutes after stopping.
●Time-period control is available to avoid unnecessary heat loss. Factory default is 06:00–23:59, adjustable.
When tank temperature ≥ constant-temperature output start temperature, the constant-temperature output pump automatically starts to transfer hot water to the constant-temperature tank. When the tank temperature ≤ constant-temperature stop temperature (difference between start and stop), the pump stops.
If constant-temperature tank water level ≤ lower limit (e.g., 50%), the pump starts to refill until 50% to ensure sufficient water for electric heating.
Users can switch to manual mode as needed (when permitted) to manually start or stop water filling, heating, heat exchange, and pipeline circulation.
When temperature-controlled water filling is enabled, the solenoid valve opens to allow cold water into the module when collector temperature reaches 55°C. As cold water lowers temperature, when collector temperature drops to 45°C, the valve closes. This cycle repeats until the insulated tank is full. When collector temperature exceeds tank temperature again, the system switches to differential temperature circulation mode.
The anti-freeze sensor is installed at the collector inlet. When temperature drops below 5°C, thermal circulation starts; it stops at 8°C. This circulates hot water from the tank to the collector to prevent freezing. In cold regions, it is recommended to use both heat tracing and anti-freeze protection together for maximum safety.
If abnormal function occurs after parameter changes, press and hold the Reset/Save button for 3 seconds until “HF” is fully lit, then release to restore factory settings. The system will then operate in default basic mode.
● Altitude: Not exceeding 2000 meters
● Indoor operating temperature: -10°C to 50°C
● Relative humidity: ≤ 90%
● Fully automated control for commercial solar water heating systems
● Designed for centralized hot water engineering projects
● Compatible with solar thermal collectors, storage tanks, heat pumps, and auxiliary heaters
● Stable operation, high safety standards, and long service life
● Customizable control logic for different project scales
● Factory‑direct supply with OEM / ODM support
● Commercial buildings
● Hotels & resorts
● Hospitals & healthcare facilities
● Residential apartments & dormitories
● Industrial and institutional hot water projects
A commercial solar water heater control cabinet is an intelligent control system used to manage centralized solar hot water systems. It automatically controls solar collector circulation, storage tank temperature and water level, auxiliary heating, pumps, and system protection to ensure stable hot water supply in commercial projects.
Yes. The RIWATT control cabinet is specifically designed for automated and centralized solar hot water systems, making it ideal for hotels, hospitals, apartment buildings, schools, and industrial hot water projects.
Yes. The system supports electric auxiliary heating, boilers, and air source heat pumps, allowing seamless hybrid operation to guarantee hot water availability during low solar radiation or peak demand periods.
Yes. It includes over-temperature protection, anti-freeze control, leakage (RCD) protection, power-off memory, and password screen lock, ensuring safe, reliable, and long-term operation in commercial environments.
WiFi smart control is available as an optional function, allowing remote monitoring and management of the solar hot water system. Please contact RIWATT for WiFi configuration and customization details.
Sorry, no posts matched your criteria.
