500L Flat Plate Solar Water Heater – A pressurized solar hot water system with black chrome flat plate collectors, SUS304 stainless steel tank, and 60mm PUF insulation, delivering stable pressure, high efficiency, and reliable hot water with electric backup.

Working Principle of the  500L Flat Plate Solar Water Heater

The RIWATT 500L flat plate solar water heater operates with a closed-loop, pressurized circulation system to ensure stable water pressure and efficient heat transfer. Solar energy is absorbed by the black chrome flat plate collectors and quickly transferred through copper risers to the 500L pressurized stainless steel tank. The 60mm PUF insulation minimizes heat loss, while the integrated 3kW electric heater provides automatic backup heating when solar input is insufficient. Built-in safety valves and air vents maintain secure and reliable operation.

500L Flat Plate Solar Hot Water Specification

500L Flat Plate Solar Water Heater Specification
Solar Collector * 4 Pcs
1. Solar Collector Size 2000*1000*80mm,
2. Solar Collector Absorber BLACK coating absorber
3. Collector Back Sheet Galvanized steel back sheet
4. Connection size: 3/4” 3/4”
5. Rise: 9 pcs riser with 8mm diameters.
6. Solar Collector bracket 4.0mm galvanized steel bracket
7. Solar Collector bracket  angle 30 degree.
500L Water Tank* 1 Pcs
1. Insulation Thickness 60mm PUF
2. Inner diameter 580mm
3. Outer diameter 700mm
4. Tank length 2176mm
5. Inner thickness:  2.0mm, SUS-304-2B stainless
6. Outer thickness 0.45mm,
7. Patter of water tank closed loop │ high pressure type
8. Water tank bracket stronger galvanized steel.
Recommended Accessories  
1. Copper Check Valves 1 pcs
2. P/T Valve 1 pcs
3. Vacuum Safety Valve 1 pcs
4. Magnesium Anodes 1 pcs
5. 3kw Electric Heater 1 pcs
6. Water Pre-Filter 1 pcs
7. 3/4 ”Stopper 2 pcs
8. Inter-Panel Copper Connections 6 pcs
9. Connection pipe EPDM solar hose (premium model: 3.5 meters) : 1 pair

 

Key Features & Advantages

• High-efficiency black chrome flat plate absorbers
• Pressurized closed-loop system with stable water pressure
• SUS304 stainless steel inner tank for durability and hygiene
• 60mm PUF insulation for excellent heat retention
• Complete accessory package for safe installation
• Heavy-duty galvanized steel mounting brackets
• Electric backup heating for all-weather reliability
• Low maintenance and long service life

Applications

The 500L flat plate solar water heater is ideal for a wide range of residential and commercial hot water needs, including:

• Residential homes and villas
• Apartments and multi-family buildings
• Hotels and guesthouses
• Clinics and small hospitals
• Dormitories and staff housing
• Commercial facilities requiring reliable hot water supply

Why Choose RIWATT Solar 500L Flat Plate System

RIWATT is a professional manufacturer specializing in solar water heating solutions engineered for performance, safety, and longevity. The 500L flat plate solar water heater reflects RIWATT’s commitment to premium materials, precision manufacturing, and reliable system design.

By choosing RIWATT, customers benefit from:
• Proven flat plate solar technology
• Reliable high-pressure system compatibility
• Strict quality control standards
• Reduced energy consumption and operating costs
• OEM and bulk supply capability
• Professional technical support and after-sales service

Frequently Asked Questions (FAQs)

1. Is the RIWATT 500L flat plate solar water heater suitable for high-pressure water supply?

Yes. It uses a closed-loop pressurized design compatible with municipal water pressure systems.

2. Is installation complicated?

No. The system includes complete mounting brackets and accessories, making installation efficient for professional installers.