Product Overview
The Kwikot Kwiksol 150L 400kPa indirect solar geyser is a domestic solar thermal storage cylinder with a 2kW electric backup element. It transfers solar heat through a separate propylene glycol circuit and heat exchanger, keeping household water out of the collector circuit. This design supports suitably specified installations in frost-prone areas. This listing is for the geyser cylinder; collectors and system installation components are specified separately.
Key Features
- 150L capacity: Provides stored hot water where this capacity matches the household's assessed demand.
- Indirect heat transfer: A separate glycol circuit transfers collector heat to the stored household water.
- 2kW electric backup: Allows supplementary heating on cloudy days or when stored hot water has been used.
- B energy rating: Polyurethane insulation helps limit standing heat loss.
- Enamelled steel inner cylinder: Thermofused porcelain enamel and sacrificial anode protection help protect the cylinder against corrosion.
- System layout options: Can form part of a correctly designed close-coupled or split solar thermal installation.
Applications
- Domestic solar thermal hot water storage.
- Frost-prone installations using the specified glycol mixture and compatible collectors.
- Replacement indirect cylinders where the heat-transfer circuit, pressure and dimensions are compatible.
Why Choose This Product?
This 150L indirect cylinder provides a solar water heating option where frost conditions call for a protected heat-transfer circuit. Its electric backup supports hot water availability when solar input is insufficient, while the separate collector loop offers a different approach from circulating household water directly through the collectors.
Important Notes
- Scope of supply: Geyser cylinder with electric backup. Solar collectors or vacuum tubes, mounting frames, circulation pump, controls and installation materials are not included as a complete system. Kwikot specifies a temperature and pressure safety valve and drain cock with the water heater; confirm the supplied accessory pack.
- Frost protection: Use the manufacturer-specified propylene glycol mixture. Do not fill the collector circuit with water alone. The potable-water pressure rating is 400kPa; the indirect circuit requires its separately specified 100kPa expansion relief protection.
- Installation: Use a suitably qualified solar water heating installer and electrician. Follow SANS 10106, SANS 10254 and Kwikot's instructions. Thermosyphon circulation requires the cylinder above the collectors; other layouts may need a pump and controller. Assess the structure for the filled system weight.
- Maintenance: Arrange annual servicing and replace glycol every two years as recommended in the linked brochure. Keep safe access for servicing.
- Model details: Specifications follow the linked manufacturer brochure. Confirm the supplied version and dimensions before ordering a replacement for a restricted space.
- Warranty: Five years on the inner cylinder, flange assembly and gasket; one year on electrical components; two years on the drain cock and safety valve. Subject to correct installation, water quality, maintenance and genuine-parts conditions. Retain proof of installation; otherwise the start date is based on manufacture. Installation cover is the installer's responsibility.
Product Resources
- Kwikot Kwiksol indirect brochure and cylinder specifications
- Kwikot Kwiksol installation and warranty manual
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Kwikot |
| Range | Kwiksol Indirect |
| Manufacturer Cylinder Reference | SOL-150-IND-B |
| Product Type | Indirect solar thermal storage water heater with electric backup |
| Capacity | 150L |
| Backup Element Rating | 2kW |
| Operating Pressure | Up to 400kPa |
| Energy Rating | B |
| IP Rating | IPX4 |
| Inner Cylinder | Porcelain-enamelled steel |
| Insulation | Polyurethane |
| Collector Circuit Fluid | Specified propylene glycol mixture |
| Water / Solar Connections | ¾-inch BSP; refer to manufacturer connection drawing |
| Empty Cylinder Weight | 48kg |
| Dimensions (L × H) | 1070 × 596mm, per linked brochure |
| Typical Flat Plate Collector Pairing | 1 × 2m², sold separately and subject to system design |
Important:
All solar products, power systems, water heating and gas products and their components must be installed by appropriately qualified personnel. All installations must adhere to local wiring regulations and standards. Sustainable Online will not be held liable for any product malfunctions as a result of incorrectly installed systems.

