1. Overview
The MISOL 110V Solar Water Heater Controller is designed for managing separated pressurized solar hot water systems. This controller efficiently regulates the heating process by monitoring temperatures in the solar collector and the storage tank, activating the circulation pump and auxiliary heating as needed. It is suitable for systems with one collector array, one storage tank, one pump, and auxiliary heating.
Key Features:
- 110V operation, specifically designed for solar hot water heating systems.
- Supports one collector array, one storage tank, one pump, and auxiliary heating.
- Equipped with 3 temperature sensors: 1 x PT1000 for the collector and 2 x NTC10K for the tank.
- Temperature measurement accuracy: +/-2 Celsius Degree.
- Collector temperature measuring range: -10 to 220 Celsius Degree.
- Tank temperature measuring range: 0 to 110 Celsius Degree.
- Compact design with dimensions of 187mm x 128mm x 46mm.
2. Product Components
The package includes the following components:
- MISOL 110V Solar Water Heater Controller (Model MS-SWH-SRC-208-1-A)
- 1 x PT1000 Temperature Sensor (for collector)
- 2 x NTC10K Temperature Sensors (for tank)
- Power cable
- Mounting hardware
- Instruction Manual
Product Overview Video:
Video 1: This video provides an overview of the MISOL 110V Solar Water Heater Controller's physical structure and appearance, showcasing its design and components.
3. Setup and Installation
3.1 Wiring Diagram:
Refer to the following diagram for proper wiring of the controller, sensors, pump, and auxiliary heating element. Ensure all connections are secure and comply with local electrical codes.
3.2 Sensor Connections:
- T1 (PT1000): Connect the PT1000 sensor to the T1 input port. This sensor measures the temperature of the solar collector array.
- T2 (NTC10K): Connect one NTC10K sensor to the T2 input port. This sensor typically measures the lower part of the storage tank.
- T3 (NTC10K): Connect the second NTC10K sensor to the T3 input port. This sensor typically measures the upper part of the storage tank or is used for auxiliary heating control.
3.3 Output Connections:
- R1: Connect the circulation pump to the R1 output port. The controller will activate this pump based on temperature differentials.
- H1: Connect the auxiliary heating element to the H1 output port. This will be activated based on programmed settings to ensure desired water temperature.
Important: The collector pump output (R1) is rated for 1 Amp. For higher load pumps or enhanced protection, it is recommended to use an external 120VAC coil relay to switch your pump(s).
4. Operating Instructions
4.1 Display and Buttons:
The controller features an LCD display and several buttons for navigation and setting parameters:
- SET: Enters parameter setting mode or confirms a setting.
- ESC: Exits current menu or cancels an operation.
- Up/Down Arrows: Navigate through menus or adjust values.
- Clock: Accesses time and date settings.
- Heating: Manual control or status of auxiliary heating.
4.2 Basic Operation:
Upon power-up, the controller will display current temperatures and system status. The primary function is to activate the circulation pump (R1) when the collector temperature (T1) is sufficiently higher than the tank temperature (T2 or T3, depending on settings) to transfer heat efficiently. Auxiliary heating (H1) will engage if the tank temperature falls below a set minimum and solar heating is insufficient.
4.3 Parameter Settings:
To access and modify parameters, press the SET button. You may be prompted for a password (default is typically 0000). Key parameters include:
- Temperature Units: Change between Celsius and Fahrenheit.
- Temperature Differential (DT): The temperature difference between the collector and tank required to activate the pump.
- Maximum Tank Temperature: Upper limit for the hot water tank.
- Minimum Tank Temperature: Lower limit for the hot water tank, below which auxiliary heating may activate.
- Anti-Freezing Function: Settings to prevent freezing in the collector loop.
- Timed Auxiliary Heating: Schedule specific times for the auxiliary heater to operate.
Note: The specific menu structure and parameter codes are detailed in the full manual. Some advanced settings may require careful adjustment to avoid system damage or inefficient operation.
Controller Operation Video:
Video 2: This video demonstrates the general operation of the 110V solar water heater controller, including display readings and basic function.
5. Maintenance
The MISOL Solar Water Heater Controller is designed for minimal maintenance. However, regular checks can ensure optimal performance and longevity:
- Visual Inspection: Periodically check the controller and wiring for any signs of damage, corrosion, or loose connections.
- Sensor Check: Ensure temperature sensors are securely in place and their cables are intact. Damaged sensors can lead to inaccurate readings and improper system operation.
- Cleaning: Keep the controller's exterior clean and free from dust. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
- Firmware Updates: Check the manufacturer's website for any available firmware updates, though these are typically not user-installable for this type of device.
Always disconnect power to the controller before performing any maintenance or inspection.
6. Troubleshooting
This section addresses common issues you might encounter with your solar water heater controller. For problems not listed here, consult a qualified technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller display is blank. | No power supply; Blown fuse. | Check power connection. Verify circuit breaker. Inspect internal fuses (if accessible and safe to do so, otherwise consult technician). |
| Pump (R1) is not activating. | Insufficient temperature differential; Faulty sensor (T1 or T2/T3); Pump malfunction; Incorrect settings. | Check T1 and tank temperatures. Ensure T1 is sufficiently higher than tank temperature based on DT setting. Verify sensor connections and readings. Test pump functionality. Review controller settings for DT and pump operation. |
| Auxiliary heating (H1) is not activating. | Tank temperature above set minimum; Faulty sensor (T2/T3); Heater malfunction; Incorrect settings. | Check tank temperature against minimum set point. Verify sensor connections and readings. Test auxiliary heater functionality. Review controller settings for H1 activation and timed heating. |
| Inaccurate temperature readings. | Damaged or improperly installed sensor; Loose sensor connection. | Inspect sensors for physical damage. Ensure sensors are correctly installed in their respective locations (collector, tank). Check wiring connections to the controller. Replace faulty sensors if necessary. |
| Unable to change parameters. | Incorrect password; Locked settings. | Ensure the correct password (default 0000) is entered. Refer to the full manual for specific instructions on unlocking or accessing advanced settings. |
7. Technical Specifications
| Feature | Specification |
|---|---|
| Model Number | MS-SWH-SRC-208-1-A |
| Voltage | 110 Volts |
| Product Dimensions (L x W x H) | 7.36" x 5.04" x 1.81" (187mm x 128mm x 46mm) |
| Material | Polyvinyl Chloride (PVC) |
| Display Type | LCD |
| Temperature Sensors Included | 1 x PT1000, 2 x NTC10K |
| Accuracy of Temperature Measuring | +/-2 Celsius Degree |
| Collector Temperature Range | -10 to 220 Celsius Degree |
| Tank Temperature Range | 0 to 110 Celsius Degree |
| Operating Temperature | Up to 50 Celsius Degree |
| Pump Output Rating (R1) | 1 Amp (max) |
| UPC | 701158991942, 508931560803 |
8. Warranty and Support
8.1 Product Warranty:
MISOL products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact MISOL customer service. Keep your purchase receipt as proof of purchase for warranty claims.
8.2 Customer Support:
If you encounter any issues or have questions regarding the installation, operation, or maintenance of your MISOL Solar Water Heater Controller, please contact MISOL customer support. Contact information can typically be found on the product packaging, the official MISOL website, or through your retailer.
When contacting support, please have your product model number (MS-SWH-SRC-208-1-A) and purchase details readily available.