B21, China Town Mall, Midrand
150L Non-pressurized solar water heater
- Section : Electrical & Tools
- Category : Solar Energy System
- SKU : 1391963294
The Characteristic:
1.Easy to install for flat roof and pitched roof,auxiliary heating by electrical heater.
2.With Intelligent controller.
3.High pressure polyurethane foaming with thickness 55mm.
4.Stable and reliable performance,well wind resistance.
5.SUS304-2B inner tank,sillicon seals.
6.Outer tank against rust and corrosion.
7.Eco and economical, improves the environment and save your fuel cost.
Working principle:
This model operates to feed water automatically. Using thermoiphon system -depending on the different density between solar hot water heater and cold wate flowsr,a water flowing cycle is created in the tubes. Hot water flows antomatically upwards while the cold water flows down. The water in the storage tank will be heated from this nautal circulation.
- Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 25 Dec, 2025, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
- Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
- Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
- Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.
1. What does "150L" refer to?
150L indicates the storage tank capacity — the system holds up to 150 liters of hot water in the insulated storage tank.
2. What does "non-pressurized" mean and how does this system operate?
Non-pressurized means the system is not under mains pressure and operates by thermosiphon (natural circulation). As the collector/tubes heat the water, hot water (lower density) rises into the storage tank and cold water flows down into the tubes, creating a circulation without a pump.
3. Can it be installed on both flat and pitched roofs?
Yes. The design supports installation on flat roofs (with a support frame to achieve proper tilt) and pitched roofs. Proper tilt and orientation are recommended for optimal performance.
4. Does it have an auxiliary or backup heater?
Yes — the unit includes an auxiliary electrical heater that provides backup heating when solar input is insufficient. The controller can manage when the electric heater turns on.
5. What is the intelligent controller and what does it do?
The intelligent controller monitors temperatures and controls the auxiliary electric heater (and other functions depending on model). It automates operation to maintain desired water temperature and protect the system.
6. What materials are used for the tank and seals?
The inner tank is made of SUS304 stainless steel (2B finish) and uses silicone seals. The outer tank is treated to resist rust and corrosion.
7. How well is the tank insulated?
The tank is insulated with high-pressure polyurethane foam, 55 mm thick, to reduce heat loss and improve retention of hot water.
8. Is the system suitable for high wind or extreme weather?
The unit is designed for stable and reliable performance with good wind resistance when properly mounted. For areas with extreme winds, use the manufacturer-recommended mounting hardware and anchoring methods.
9. Do I need a pump or external controller for circulation?
No pump is required — circulation is by thermosiphon (natural convection). The supplied intelligent controller handles electrical backup and temperature monitoring; no pump is needed for normal solar circulation.
10. Can this system be used in freezing climates?
Non-pressurized thermosiphon systems can be vulnerable to freezing. In freezing climates you should use protective measures (drain-down, drain-back, or approved antifreeze solutions where supported) or consult the manufacturer/installer for appropriate options.
11. What water quality is recommended? Is scaling a concern?
Hard water can cause scale build-up in collectors and the tank, reducing efficiency. If your water is very hard, consider a water softener or schedule regular descaling/maintenance as recommended by the manufacturer.
12. How much roof load should I expect when the tank is full?
When full the tank will weigh roughly 150 kg of water plus the tank structure (total depends on unit weight). Ensure the roof structure is capable of supporting the static load and consult a structural engineer if uncertain.
13. Can this system be integrated with my existing water heater?
Yes. It can preheat water before it enters a conventional water heater, reducing the energy required by the backup heater. Installation plumbing should be done by a qualified technician to ensure compatibility and safety.
14. What maintenance is required and how long is the expected service life?
Regular maintenance includes checking seals, inspecting tubes/collector for damage, flushing or descaling if necessary, and verifying electrical connections for the auxiliary heater and controller. With proper maintenance, stainless steel tanks and quality components often last 10–15 years or more; actual life depends on water quality and operating conditions.
15. Are there safety features (pressure relief, overheat protection) and what electrical requirements exist?
As a non-pressurized system it typically does not require a high-pressure relief valve, but over-temperature protection and controller-managed electric heater safety features should be present. The auxiliary heater requires a dedicated electrical connection sized per the unit specification — have a licensed electrician perform the electrical installation and check the product datasheet for power ratings.
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