Lumena PROSOLAR DURASOL User Manual

The Lumena PROSOLAR DURASOL is a high-efficiency solar water heating system designed for residential and light commercial applications. It features a durable evacuated tube collector, a high-capacity storage tank with advanced insulation, a smart digital controller with frost protection, and an integrated backup heating element. The system is designed for easy installation, low maintenance, and maximum energy savings. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Evacuated Tube Solar Collector, Insulated Storage Tank, Digital Control Panel, Circulation Pump, Temperature & Pressure Relief Valve, Backup Electric Heater.

Installation

Unpack and inspect all components. Ensure installation site has adequate structural support and solar exposure.

1. Mount Collector: Secure adjustable frame to roof or ground mount facing true south (Northern Hemisphere).
2. Install Storage Tank: Place tank in a protected, indoor location close to existing water heater.
3. Connect Piping: Use insulated copper pipes for collector loop and standard plumbing for water connections.
4. Electrical Connections: Connect control panel to power supply and pump; install backup heater circuit.
5. Fill System: Fill collector loop with propylene glycol heat transfer fluid; fill tank with water.

WARNING! Installation must be performed by a qualified professional. Roof work involves fall hazards. Ensure all electrical connections comply with local codes.

First-Time Setup

After installation, power on the system and configure the digital controller.

1. Power On: Switch on main power and controller. The display will show current temperatures.
2. Set Language: In SETUP menu, select ENGLISH (default).
3. Set Time & Date: Configure local time for accurate operation logging.
4. Configure Temperatures: Set desired tank temperature (recommended 50-60°C / 122-140°F).
5. Enable Frost Protection: Ensure frost protection is ON (default).
6. Test Backup Heater: Manually activate backup heater to verify operation.

CAUTION! Do not set tank temperature above 70°C (158°F) to prevent scalding and reduce scaling.

Specifications

• Collector Area: 3.0 m² (32.3 ft²).
• Storage Tank Capacity: 300 Liters (80 Gallons).
• Maximum Operating Pressure: 6 bar (87 psi).
• Maximum Water Temperature: 90°C (194°F).
• Backup Heater: 3 kW, 240V AC.
• Heat Transfer Fluid: Propylene glycol solution (50% mix).
• Controller Power: 24V DC, supplied by AC adapter.
• Operating Ambient Temperature: -20°C to 50°C (-4°F to 122°F).
• Certifications: SRCC OG-100, ISO 9806, CE marked.

Controls and Settings

Access all functions via the Digital Control Panel. Front Panel: POWER button, LCD display, MENU, UP/DOWN arrows, ENTER.

Display Shows: Collector temperature, Tank temperature, Pump status, Heater status, Error codes.

Menu Structure: SETUP (Language, Time, Date), TEMPERATURE (Setpoint, Differential), SYSTEM (Frost Protection, Overheat Limit, Pump Speed), MANUAL (Manual Pump/Heater override), DIAGNOSTICS (Error history, System test).

Connecting to Water System

Connect the solar tank to your home's cold water supply and hot water distribution.

1. Turn off main water supply and drain existing water heater if replacing.
2. Connect cold water inlet to tank's cold port (marked blue).
3. Connect hot water outlet to tank's hot port (marked red) and to home's hot water pipes.
4. Install isolation valves on both lines for maintenance.
5. Connect temperature/pressure relief valve discharge pipe to a safe drain.

Tip: Use dielectric unions if connecting copper to dissimilar metals to prevent corrosion.

Controller Operation

The system operates automatically. The controller compares collector and tank temperatures.

1. Automatic Mode: Pump runs when collector is 8°C (15°F) hotter than tank. Stops when difference is less than 3°C (5°F).
2. Backup Heater: Activates if tank temperature falls below setpoint for more than 2 hours (configurable).
3. Frost Protection: Pump runs briefly if collector temperature nears freezing point.
4. Overheat Protection: Pump stops if tank exceeds 85°C (185°F).
5. Manual Override: Use MANUAL menu to force pump or heater on for testing.

WARNING! Do not disable safety protections. Monitor system performance regularly.

Maintenance & Winterization

Annual maintenance ensures optimal performance and longevity.

• Monthly: Check for leaks at connections and relief valve.
• Every 6 Months: Clean collector glass tubes with water and soft brush (if accessible).
• Annually: Check heat transfer fluid pH and concentration; replace every 5 years. Inspect anode rod in tank.
• Winterization (Cold Climates): If system will be unused in freezing weather, drain water side completely. The glycol loop is freeze-protected.

Care & Cleaning

Keep control panel dry. Clean with a dry, soft cloth. Collector tubes can be rinsed with water to remove dust and debris. Do not use abrasive cleaners or high-pressure water on tubes.

CAUTION! Never spray water or cleaners on electrical components, connectors, or the control panel.

Regulatory Information

This product complies with essential requirements of relevant EU Directives. It is certified to SRCC OG-100 for solar thermal collector performance. The backup heater is UL listed. Copyright © 2023 Lumena Solar Technologies. All trademarks are property of their respective owners. For technical support, visit www.lumenasolar.com/support or contact +1-800-555-9876.

Troubleshooting

Reset: Hold MENU and POWER buttons for 10 seconds to reset controller to factory defaults (except clock).

Service: +1-800-555-9876; www.lumenasolar.com/support