TIS HARD PELLET 500–1000 is a modern boiler with a maximum thermal output of 500–1000 kW and an automatic fuel feed system, designed for burning wood pellets, peat pellets, and sunflower husk pellets.
The boiler is intended for use in heating systems of residential and industrial facilities.
A distinctive feature of the boiler is the fully automatic fuel combustion process in the burner, managed by an individual automation algorithm, followed by the afterburning of combustible gases in a refractory concrete combustion chamber with walls lined with fireclay bricks.



The specially designed burner construction with moving grates and uniform air distribution across the entire combustion surface ensures excellent combustion efficiency.
The burner grates are made of cast iron resistant to aggressive flue gases and can be easily replaced if necessary.
The automatic extinguishing system prevents ignition of the fuel in the screw feeder.
If the temperature inside the screw pipe rises dangerously above 95°C, a valve opens and water is released into the screw to extinguish the fire.
Thanks to its structural features and unique manufacturing technologies, the boiler achieves maximum possible heat energy recovery from the burned fuel.
The flue gas temperature at the outlet does not exceed 180°C (when the boiler operates within the set temperature range, with a Δt not exceeding 15°C, and the return temperature not lower than 55°C).
If the recommended operating conditions, parameters, or fuel feed settings are not followed, the flue gas temperature may exceed 250°C.
Boiler advantages:
– Efficiency at rated power: not less than 93%;
– Made from high-strength European boiler steel;
– 50 mm thermal insulation;
– Powder-coated housing;
– Wide door opening angle for convenient access;
– Cleaning and maintenance are performed from the front of the boiler;
– Option to install an automatic ash removal system;
– Optional automatic pneumatic heat exchanger cleaning system;
– Optional pneumatic fuel system with a 5–15 m³ fuel storage tank.
The boiler automation system combines the following functions:
– Control of the boiler burner
– Control of the fuel feeder
– Control of circulation pumps for the boiler and heating system
– Control of flue gas temperature
– Boiler overheating protection
– Option to connect an internet module for remote control and monitoring
Warranty: 5 years for boiler body tightness
Each boiler is designed and produced with an individual approach, tailored to the specific requirements of every facility.
| Boiler characteristics | Unit | TIS HARD PELLET 500 | TIS HARD PELLET 650 | TIS HARD PELLET 800 | TIS HARD PELLET 1000 |
|---|---|---|---|---|---|
| Power | kW | 150-500 | 195-650 | 240-800 | 300-1000 |
| Maximum operating temperature | °C | 85 | 85 | 85 | 85 |
| Maximum operating water pressure | MPa | 0,4 | 0,4 | 0,4 | 0,4 |
| Minimum vacuum in combustion chamber | Pa | 65 | 65 | 85 | 85 |
| Efficiency | % | 93 | 93 | 93 | 93 |
| Heating surface area | m² | 44 | 58 | 71 | 89 |
| Maximum fuel consumption | kg/h | 208 | 270 | 334 | 417 |
| Water flow through boiler | m³/h | 22 | 27 | 34 | 43 |
| Water volume in boiler | dm³ | 1150 | 1430 | 1860 | 2105 |
| Operating pressure | MPa | 0,025 | 0,025 | 0,035 | 0,035 |
| Connection | mm | ⌀80 | ⌀80 | ⌀80х2 | ⌀80х2 |
| Chimney diameter | mm | 300 | 350 | 400 | 500 |
| Flue gas temperature | °C | 155-180 | 155-180 | 155-180 | 155-180 |
| Boiler weight | kg | 3500 | 4370 | 5460 | 6830 |
| Boiler weight with hopper and feeder | kg | 3700 | 4570 | 5710 | 7080 |
| Width (A) | cm | 120 | 120 | 137 | 155 |
| Depth (B) | cm | 231 | 236 | 241 | 251 |
| Height (C) | cm | 229 | 243 | 243 | 261 |
| Size A1 | cm | 264 | 264 | 272 | 281 |
| Size B1 | cm | 243 | 248 | 253 | 263 |
| Size C1 | cm | 240 | 254 | 254 | 275 |
| Size D | cm | 203 | 217 | 217 | 238 |
| Size E | cm | 37 | 37 | 37 | 37 |
| Size V | cm | 58 | 58 | 58 | 58 |
| Size K | cm | 30 | 30 | 30 | 30 |
| Hopper volume | dm³ | 1500 | 1500 | 1500 | 1500 |
| Hopper width | cm | 121 | 121 | 121 | 121 |
| Hopper depth | cm | 151 | 151 | 151 | 151 |
| Hopper height | cm | 180 | 180 | 215 | 215 |
| Note: dimensions and weight may vary within ±5%. |
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