High-Pressure Solar Geyser Specs | The Sun Pays
Note: Complete high-pressure solar geysers are currently unavailable due to regulatory changes. You can still get solar hot water at full mains pressure by adding a retrofit manifold kit to your existing electric geyser. See the retrofit kit specifications or compare options in our solar geyser guide.
🔄 Choosing Between Low and High-Pressure Geysers
Municipal water supply typically ranges between 1–5 bar (depending on location and time of day).
High-Pressure Geysers
- Can connect directly to municipal water without a pressure-reducing valve
- Integrates into existing high-pressure plumbing systems
- Delivers strong hot water flow to taps and showers
Low-Pressure Geysers
- Open to atmosphere; hot water pressure depends on the geyser’s height
- Can be used on municipal water with a pressure-reducing valve on cold water inlet
- Auxiliary tank helps balance hot and cold water pressures
📦 Formerly Available High-Pressure Geyser Models
We previously offered two product series. These details are retained for reference:
| Model | Stainless Steel Series | Green & White Series |
|---|---|---|
| Tube Configuration | 10 tubes per 100L | 10 tubes per 100L |
| 100L System | 10 × 1.8m tubes | 10 × 1.8m tubes |
| 150L System | 12 × 1.8m tubes | 15 × 1.8m tubes |
| 200L System | 20 × 1.8m tubes | 20 × 1.8m tubes |
| 250L System | 25 × 1.8m tubes | 25 × 1.8m tubes |
🛡️ Guarantee
- Stainless Steel Series: 5-Year Guarantee
- Green & White Series: 2-Year Guarantee
🧱 Tank Materials
- Outer Shell: 0.4mm stainless steel (Stainless Steel series), or 0.4mm white steel (Green & White series)
- Inner Tank: 1.2mm SUS 304 stainless steel (both series)
- Insulation: 55mm polyurethane foam
- Weight: Up to 50kg
🌡️ Working Pressure
Both series are designed for 500 kPa (5 bar) operation.
🔍 Evacuated Tube Details
- 1800 mm × 58 mm × 2 mm thick vacuum tubes
- Hail-resistant (up to 38 mm diameter)
- Use of copper heat pipes for efficient transfer — no water inside the tube
- Aluminium fins transfer heat from black absorber layer to the tank
⚡ Optional Electric Backup
All models support a 32 mm screw-in South African electric element with pocket.
SR609 Smart Controller Features
- Displays water temperature inside tank
- Programmable for 3 daily time/temperature heating cycles
- Default settings: heats to 60°C if below 54°C at 4–5am and 5–10pm
- Manual boost button for instant heating
- Battery backup to preserve settings
💡 Summary: When to Choose a High-Pressure Geyser
If you want to retain full municipal or pressure-pump pressure in your plumbing system, a high-pressure geyser is the better choice. Note that high-pressure geysers store less thermal energy in the tubes compared to low-pressure types, but deliver stronger flow at outlets.
For sizing, connection advice, or installation tips, please contact our technical support team or call 012 734 0915.
