Product Overview & Application Area
The Rojek KTP 30 natural draft boiler is a water-fed solid fuel boiler with a nominal output of 30 kW for manual loading with split logs. It is suitable for heating systems where a robust, simply designed boiler without a fan and without electronic control is to be used.
The boiler is intended for integration into central hot water heating systems and can be operated with gravity circulation or pump circulation depending on the system concept. The specific output selection and system design should always match the heating load, the buffer tank, and the existing flue gas system.
Technology & Equipment
The Rojek KTP 30 operates as a manually loaded natural draft boiler with adjustable primary and secondary air supply. Combustion is influenced via the air supply and the draft regulator, not via an electric fan. This keeps the technical design deliberately simple and comprehensible.
The boiler body consists of a welded steel construction. The grate is water-cooled, the combustion chamber is designed for split logs, and the boiler features a large loading door as well as separate cleaning areas. A cooling loop is provided for overheating protection.
Everyday Benefits
In everyday use, the Rojek KTP 30 focuses on simple operation. Manual loading, mechanical output control, and easily accessible cleaning areas make the boiler interesting for operators who prefer a manageable, robust solid fuel technology.
Operating without electric fan technology makes the boiler less dependent on electronic components. For clean and material-friendly operation, dry firewood, suitable chimney draft, sufficient return temperature, and regular cleaning remain crucial.
System Integration & Compatibility
The Rojek KTP 30 is integrated into a water-based heating system. The water connections are designed as G 2", and the flue pipe connection is 160 mm or 159 mm at the boiler spigot. For comfortable and professional operation, combining it with a buffer tank is recommended.
The manufacturer specifies a recommended buffer tank volume of 1200 liters for the KTP 30. The specific integration should be planned by a specialist company, particularly with regard to return temperature raising, safety group, thermal drain safety, chimney draft, and hydraulic integration.
Technical data at a glance
The most important technical data of the Rojek KTP 30 for classification in the heating system.
| Nominal output | 30 kW |
| Fuel | Wood |
| Combustion technology | Natural draft |
| Efficiency | 80.8% |
| Energy efficiency class | A+ for wood |
| Max. flow temperature | 90 °C |
| Max. operating pressure | 2 bar |
| Log length | 530 mm |
| Boiler class | Class 5 for wood according to EN 303-5 |
| Draft requirement | 16–20 Pa |
| Flue gas temperature | 163 °C at rated output for wood |
| Flue pipe connection | 160 mm |
| Safety heat exchanger | Yes, cooling loop |
| Buffer tank recommended | Yes |
| Height | 1193 mm |
| Width | 622 mm |
| Depth | 750 mm |
| Weight | 341 kg |
Assembly
The Rojek KTP 30 must be installed on a suitable, load-bearing, and non-combustible surface. For installation, the requirements for the boiler room, combustion air supply, safety valves, chimney connection, and hydraulic integration must be observed.
The connection to the heating system, the sizing of the buffer tank, the return temperature boost, and the flue gas connection should be carried out by a qualified specialist company. Before commissioning, the heating circuit, venting, tightness, flue gas routing, and safety devices must be checked.
Notes
For clean operation, dry split logs with suitable residual moisture are important. Fuel that is too moist can significantly affect performance, consumption, burn behavior, and soiling.
The boiler should be cleaned regularly and maintained according to the manufacturer's specifications. For material-preserving operation, sufficient return temperatures, suitable chimney draft, and a correctly connected cooling loop are essential.
Scope of delivery
- Rojek KTP 30 natural draft boiler