Summary of benefits:

• Simple operation & less fuel consumption
• Very good burning quality
• High efficiency of up to 85 %
• Long lifespan of 25-30 years
• Can be combined with oil or gas heating systems
• Retrofit to pellet or wood chips operation is possible
• If used as a combination boiler, flexibility of fuel selection
• Safety-tested and method of construction is licensed / Ü-sign
• Tested according to DIN EN 303-5
• Saving heating costs compared to oil/ gas
• Attractive cost price
• 36+ month guarantee*

Characteristic
The IBC GK-3K öko solid fuel boiler is a cast iron boiler made for heating with untreated wood (pieces of wood/ firewood) and coke (20/40 / 40/60). The style of construction is determined by the principle of cast iron elements, which is why the IBC GK-3K öko is an effective and powerful nature flue boiler with an efficiency rate of up to 85 %. The core of the boiler is formed by a cast iron elements body, which consists of a specific number of cast iron elements. The power of the IBC GK-3K öko is determined by the number of elements. The cast iron elements body is enclosed by a 20 mm aluminium-lined fibreglass casing to limit radiation loss. With the help of flue control combustion intensity can be adjusted. A thermometer/ manometer monitors the heat output at all times. Due to the optimal construction of the smoke gas channels for use with solid fuels, pollution emission is limited and maintenance is reduced to a minimum. The IBC GK-3K öko is produced in six different power models from 17 kW to 46 kW and the average lifespan is 25 – 30 years. The IBC GK-3K öko can be installed as a main boiler or in conjunction with an oil or gas boiler. As a combination boiler the IBC GK-3K öko allows the selection of the cheapest fuel. IBC Heiztechnik offers a “36+” months* guarantee for the IBC GK-3K öko models.


*After 36 months guarantee you can get another 7 years of guarantee for the single cast iron boiler elements.

Connections
Boiler through-flow flange with G2 ½" connection
Boiler return-flow flange with G2 ½" connection

Delivery specification
The boiler is delivered upright on a pallet and completely mounted. Delivery specification comprises assembly instructions, operating instructions, thermometer/ manometer and a cleaning kit.

Accessories (additional cost)
Optional at extra cost the following accessories are available: GK-3K öko flue control, GK-3K öko safety heat exchanger integrable in the through-flow boiler and thermal process safeguard (according to DIN EN 12828), industrial water accumulator, buffer accumulator or combination accumulator. Spare gasket for upright smoke gas channels.

Installation
The installation has to be carried out following the relevant technical and local regulations. In closed heating systems a safety heat exchanger with thermal process safeguard (in accordance with DIN EN 12828) is necessary (see IBC Heiztechnik accessories). We recommend the running of the solid fuel boiler with a buffer accumulator (ca. 50 litres per 1 kW boiler rated power).

Chimney dimensions
You should contact the responsible chimney sweeper. He proves the suitability of the present chimney to the planned boiler.

Dimensional drawing

1 Boiler thermometer

2 Filling door

3 Poke door

4 Casing with insulation

5 Cast iron body

6 Smoke tube connection

L Boiler length

IBC GK-3K öko models	GK-3K 24 öko	GK-3K 28 öko	GK-3K 33 öko	GK-3K 37 öko	GK-3K 41 öko	GK-3K 46 öko
Nominal heating power (coke)	24 kW	28 kW	33 kW	37 kW	41 kW	46 kW
Nominal heating power (wood)**	17 kW	21 kW	26 kW	30 kW	34 kW	39 kW
Number of elements	5 pieces	6 pieces	7 pieces	8 pieces	9 pieces	10 pieces
Weight incl. insulation	320 kg	360 kg	400 kg	440 kg	480 kg	520 kg
Measures	see dimensional drawing
Boiler length L (dimensional drawing)	480 mm	570 mm	660 mm	750 mm	840 mm	930 mm
Filling hole (width x height)	280 x 250 mm
Poke door hole (width x height)	280 x 380 mm
Log length (wood log)	30-35 cm	35-40cm	45-50 cm	55-60 cm	65-70 cm	75-80 cm
Content of combustion chamber	61 litres	77 litres	93 litres	108 litres	123 litres	141 litres
Heating surface	2,10 m²	2,5 m²	3,00 m²	3,45 m²	3,90 m²	4,35 m²
Boiler water content	46 litres	53 litres	59 litres	66 litres	73 litres	79 litres
Exhaust mass flow [g/s]	12,48 g/s	14,69 g/s	16,90 g/s	19,11 g/s	21,45 g/s	23,66 g/s
Permissible operation pressure	4 bar
Permissible operation temperature	100 °C
Minimum return-flow temperature	40 °C
Exhaust temperature at nominal power (coke)***	277,3 °C
Exhaust temperature at nominal power (wood-medium)***	315,6 °C
Required manometric pressure	23 Pa	26 Pa	28 Pa	29 Pa	30 Pa	31 Pa

** At the burning of soft wood you have to bargain for a power change of 10 – 15 %.
*** The stated exhaust temperatures are values for orientation. Depending on the make and dirt of the heating surfaces differences are possible.

Download technical data sheets:		Data sheet GK-3K öko (0,4MB)			Installations accessories (0,2MB)
		TÜV certification (0,2MB)
Reportage extract "Heating with wood":		A satisfied IBC Heiztechnik costumer in a reportage

 

IBC GK-3K öko solid fuel boiler is tested by TÜV, its method of construction is licensed and it complies with all necessary regulations in Germany.

Start now and become a heating cost saver with an IBC GK-3K öko solid fuel boiler – like more than 85,000 customers.

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