Select Solar 05002DK03 Installation Manual

The Select Solar 05002DK03 is a 5kW grid-tied solar inverter designed for residential photovoltaic systems, featuring MPPT technology, Wi-Fi monitoring capability, IP65 waterproof rating, LCD display, and compatibility with standard PV modules. It operates with a wide input voltage range, includes built-in DC and AC protection, and supports remote monitoring via smartphone app. Below are key sections for safety, features, installation, electrical connections, commissioning, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Inverter unit, Mounting brackets, Communication dongle (Wi-Fi), DC connectors, User manual.

Safety Precautions

Read all instructions before installation. Solar systems involve high voltages.

1. Disconnect all power sources: Turn off AC grid and DC PV disconnect switches before working.
2. Use proper PPE: Wear insulated gloves and safety glasses.
3. Qualified personnel only: Installation must be performed by certified electricians.
4. Grounding: Ensure proper grounding of inverter and PV array.
5. No wet conditions: Do not install or operate during rain or high humidity.

WARNING! DC voltage from PV panels is present even when grid is off. Risk of electric shock or arc flash exists.

Unpacking and Inspection

Carefully unpack and verify all components.

1. Check packaging: Inspect for shipping damage.
2. Verify contents: Inverter unit, mounting brackets, Wi-Fi dongle, DC connectors, manual.
3. Inspect inverter: Look for cracks, loose parts, or water damage.
4. Serial number: Record serial number from label for registration and warranty.

CAUTION! Do not install damaged equipment. Contact supplier immediately if any damage is found.

Technical Specifications

• Model: Select Solar 05002DK03
• Rated AC Power: 5 kW
• Max DC Power: 5.5 kW
• MPPT Voltage Range: 200-800 VDC
• Max DC Input Voltage: 1000 VDC
• Start-up Voltage: 200 VDC
• AC Output Voltage: 240 VAC, 60 Hz (split-phase)
• Max AC Output Current: 21 A
• Efficiency: 98% (max)
• Dimensions: 20" x 14" x 6" (H x W x D)
• Weight: 35 lbs
• Cooling: Natural convection
• Communication: Wi-Fi (802.11 b/g/n), RS485 optional

Mounting and Positioning

Choose location carefully for performance and safety.

Location Requirements: Well-ventilated area, protected from direct sunlight if possible, accessible for maintenance, close to PV array and AC connection point.

Mounting Steps:

1. Select wall: Solid, vertical surface capable of supporting weight.
2. Mark bracket holes: Use template provided.
3. Drill holes: Use appropriate anchors for wall type.
4. Attach brackets: Secure with bolts (included).
5. Hang inverter: Lift onto brackets, ensure secure fit.
6. Clearances: Maintain 12 inches clearance on sides, 24 inches above/below for airflow.

Tip: Avoid locations with excessive dust, corrosive gases, or flammable materials.

Electrical Connections

Follow national and local electrical codes. All connections must be torque to specifications.

1. DC Connection:
   • Connect PV strings to DC input terminals (+ and -).
   • Use proper DC connectors (MC4 compatible).
   • Observe polarity: Red to positive, black to negative.
   • Torque DC terminals to 25 Nm.
2. AC Connection:
   • Connect AC output to grid via dedicated breaker.
   • Use copper conductors only (minimum #10 AWG).
   • Torque AC terminals to 20 Nm.
   • Install external AC disconnect as required by code.
3. Grounding:
   • Connect grounding lug to earth ground.
   • Use green or bare copper wire (#8 AWG minimum).
4. Communication:
   • Insert Wi-Fi dongle into communication port.
   • Configure via smartphone app.

WARNING! Incorrect wiring can cause fire, equipment damage, or void warranty. Double-check all connections.

Commissioning and Startup

After installation and connections, proceed with commissioning.

1. Pre-startup check:
   • Verify all connections are tight and correct.
   • Ensure DC and AC disconnects are OFF.
   • Confirm proper grounding.
2. Power-up sequence:
   1. Turn ON AC grid disconnect.
   2. Turn ON DC PV disconnect.
   3. Inverter will perform self-test (LEDs will flash).
3. Initialization:
   • LCD will display startup sequence.
   • Inverter will synchronize with grid (takes 1-2 minutes).
   • Green LED indicates normal operation.
4. Wi-Fi setup:
   • Download "Select Solar Monitor" app.
   • Follow in-app instructions to connect inverter to network.
   • Register inverter online for full monitoring features.

Note: First-time synchronization may take up to 5 minutes depending on grid conditions.

Operation and Monitoring

Normal operation is automatic once commissioned.

LCD Display Information: Real-time power output (kW), daily energy (kWh), total energy (MWh), input voltage, operating status, error codes if any.

LED Indicators:

• Green steady: Normal operation
• Green blinking: Grid connection in progress
• Red steady: Fault condition
• Red blinking: Warning (reduced output)
• Off: No power or standby

Remote Monitoring: Use smartphone app to view performance, set alerts, download reports, check historical data.

Grid Compliance: Inverter automatically adjusts to grid requirements. During grid outage, inverter shuts off (anti-islanding protection).

Maintenance Guidelines

Regular maintenance ensures optimal performance and longevity.

1. Monthly:
   • Visual inspection for damage, corrosion, or loose connections.
   • Check ventilation openings are clear of debris.
   • Verify monitoring system is active and reporting.
2. Quarterly:
   • Check torque of DC and AC connections (if accessible).
   • Clean exterior with dry cloth if dusty.
   • Review error logs in monitoring app.
3. Annual:
   • Professional inspection recommended.
   • Thermal scan of connections (if equipment available).
   • Verify ground resistance.

CAUTION! Always disconnect power before any maintenance. Do not open inverter enclosure - no user-serviceable parts inside.

Regulatory Compliance

This product complies with relevant standards: UL 1741 (Inverters, Converters, Controllers), IEEE 1547 (Interconnection Standard), FCC Part 15 (Class B digital device). Certified for grid interconnection in North America. Copyright © 2023 Select Solar Technologies. All trademarks are property of their respective owners. For technical support, visit www.selectsolar.com/support or call 1-800-555-SOLAR (7652).

Troubleshooting

Reset Procedure: Turn OFF DC disconnect, wait 5 minutes, turn OFF AC disconnect, wait 30 seconds, turn ON AC then DC.

Error Codes: Refer to manual appendix for complete error code list and resolutions.

Service: 1-800-555-SOLAR (7652); www.selectsolar.com/support