Natural draft boiler ROJEK KTP 30 log boiler 30 kW

ROJEK KTP 30 natural draft boiler for logs – 30 kW

The ROJEK KTP 30 is a hand-fed Natural draft boiler for firewood With a nominal output of 30 kW, the boiler operates without a fan, relying solely on natural chimney draft, and is suitable for the reliable heat supply of larger single-family homes, agricultural buildings, or smaller commercial units.

Important: The KTP 30 is sometimes incorrectly referred to as a wood gasifier. Technically, however, it is a classic [engine/gasifier]. Log-fired natural draft boiler. Combustion takes place without fan assistance via the natural chimney draft and is mechanically controlled via air dampers and a thermostatic draft regulator.

Highlights

• ⭐ Natural draft boiler for firewood without a blower
• ⭐ 30 kW heating output for larger residential and commercial buildings
• ⭐ Robust welded steel construction
• ⭐ Thermostatic draft regulator for power control
• ⭐ EN 303-5 certified solid fuel boiler

Area of ​​application & Target audience

The ROJEK KTP 30 is designed for buildings with higher heating requirements. Typical applications include:

• Single-family homes with larger living space
• Multi-family houses with moderate heating requirements
• Workshops and agricultural buildings
• Heating systems with buffer storage

Natural, untreated firewood is used as fuel. A maximum wood moisture content of 20% is recommended for efficient combustion.

Everyday benefits

Natural draft operation enables a particularly robust and durable heating technology without complex electronics. Since no combustion fan is required, maintenance is significantly reduced.

The large combustion chamber allows for longer burning times and reduces the number of refueling intervals in daily heating operation.

Technology & equipment

The boiler consists of a robust welded steel construction with a water-cooled grate. Combustion takes place via natural draft through the chimney.

• adjustable primary and secondary air
• thermostatic draft regulator RT3
• integrated pressure gauge and thermometer
• Integrated after-cooling loop for overheating protection
• Connection flow/return G 2"

The required chimney draft is approximately 8–12 Pa.

Efficiency & Environment

The boiler meets the requirements of the European standard. EN 303-5 for solid fuel boilers.

• Efficiency: approx. 75%
• Energy efficiency class: A+
• Exhaust gas temperature at rated power: approx. 220–300 °C

For efficient and low-emission operation, the use of a buffer storage system is recommended.

Technical data

Manufacturer	ROJEK
Model	KTP 30
Boiler type	Log-fired natural draft boiler
Rated power	30 kW
Minimum performance	18 kW
combustion chamber volume	75.3 liters
Water volume	120 liters
Max. log length	53 cm
Flue pipe diameter	159 mm
Max. operating pressure	2 bar
Max.Operating temperature	90 °C
Weight	341 kg
Energy efficiency class	A+

Scope of delivery

• ROJEK KTP 30 boiler
• Operating instructions
• Thermostatic pull regulator RT3 with chain
• Heating system outlet valve 1/2"
• Side ceramics
• alignment screws

Assembly and safety instructions

Installation must be carried out by a qualified heating contractor. A safety group and a correctly installed after-cooling loop are required.

Only dry firewood may be used as fuel. The use of liquid fuels for kindling is not permitted.

FAQ

Is the ROJEK KTP 30 a wood gasifier?

No. The KTP 30 operates as a classic natural draft boiler for logs and not according to the wood gasification principle.

Does the boiler require electricity?

Not for the boiler operation itself. Electricity is only needed for the heating circulation pump.

What length of wood can be used?

The maximum log length is approximately 53 cm.

Is a buffer storage tank necessary?

Not technically required, but recommended for efficient operation.

What chimney draft is required?

The recommended chimney draft is between 8 and 12 Pascals.

What is the optimal wood moisture content?

A residual moisture content between 12% and 20% is recommended.