Set BURNiT WBS Active 90 - Pell 70, 65kW


Availability: In stock

SKU: 0000002656

Pellet boiler Burnit WBS Active 90 with burner Pell 70 for central heating of premises. Constructed for burning pellets.

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Product Description

Set of steel boiler WBS with pre-mounted pellet burner, fuel feeder and pellet hopper FH 500. Range in nominal output from 20 to 90 kW to satisfy the heating demands of medium to large sized spaces by using the environmentally friendly fuel wood pellets. The WBS Active boiler is adapted for pellet burning, and together with the PELL pellet burner can reach very high efficiency levels.

Product features

  • Ready to use set. Includes WBS Active boiler, pellet burner BURNiT PELL, auger with feeder chute, fuel hopper FH 500 and mounting kit
  • The boiler is specially adapted for burning pellets with additional elements such as turbulators and upper protective door
  • Microprocessor controller that operates:
    • Pellet feed and automatic ignition;
    • Self-cleaning of the burner;
    • Control of the central heating pump (circulation pump);
    • Control of domestic hot water pump (DHW pump);
    • Control via thermostat;
    • Control by buffer tank temperature
  • Temperature sensor to monitor the boiler temperature
  • Temperature sensor for water heater
  • Two temperature sensors for buffer tank
  • Fuel hopper FH 500 with two installation options- on the left or the right side of the boiler
  • Pellet burner with built-in:
    • Photo sensor for monitoring of flame intensity;
    • Internal auger;
    • Feeder chute with 360rotation
    • Dry contactless resistance heater for pellet ignition;
    • Air feed fan, step-regulated

Safety devices

For a safe and reliable operation of the boiler, a number of safety devices are installed

  • Bent feeder chute to prevent backfire into the fuel hopper
  • Thermostatic protection (80oC)
  • Electricity-independent memory of the burner. In case of power interruption, all settings are stored in the pellet burner memory.
  • Fuse 10A
  • Safety heat evacuator- a tap-water-filled line passes through the upmost part of the boiler body. In case of overheating it is triggered open by a thermostatic valve (not included) to evacuate the heat off the boiler. 
  • Pressure relieve valve 3bar

Schematic of the main features of a WBS Active pellet boiler


Pellet boiler Burnit WBS Active - Pell


1. Boiler WBS Active
2. Pellet burner Pell, flexible connection, automatic pellet-feeding auger;
3. Pellet fuel hopper FH 500
4. Upper barrier rib / turbulator/
5. Lower barrier rib  /turbulator/
6. Upper protective door ; 
7. Opening of burner flange cover on lower boiler door 
8. Mounting kit - to connect burner Pell to the boiler 


Additional Information

1 year electronic components, 2 years boiler and burner's combustion chamber

Weight (kg)

Country of Manufacture

Product Brand

Maximal thermal output (kW / BTU)
65 / 221789

Nominal thermal power (kW)

Range of heat output (kW)
18 - 65

Approximate heating surface (m²/ft²)
300 - 450

Dimension Depth (mm)

Dimension Width (mm)

Dimension Height (mm)

Mantle volume (L)

Insulation boiler
High efficiency thermal wool

Combustion chamber volume (L)

Combustion efficiency (%)

Pellet burner

Pellet fuel hopper
FH 500

Fuel hopper volume (L)

Burner air feed fan
Step-regulated 0 - 100%

Operating pressure (bar)

Operating temperature range (°C)
65 - 80

Min. return water temperature (°C)

Recommended fuel
Wood pellets, diameter 6-8 mm /EN 14961 - 2: 2011/

Mounting kit - to connect buner Pell to the boiler

Additional elements of WBS Active
Turbulators, upper protective door

Flue (mm)

Required chimney draught (Pa/mbar)
30 / 0,30

Flue cleaning opening
O : 150/70 mm

Flue gas flow
0,010 - 0,031 kg/s

Exhaust Location
Back side

Control panel

Control of central heating pump

Electric power supply (V/Hz)

Average power consumption (W)
Firing up mode: 400 ; Operating: 70 - 110

Average power consumption self-cleaning mode (W)

Combustion forced ventilation


Cold water inlet
A : R 1 1/2''/ 232 mm

Hot water outlet
B : R 1 1/2''/ 1420 mm

Safety line sleeve
E : R 1/2"/ 1222

Safety heat evacuator inlet/outlet
K : G 1/2"/ 1225

Height of Flue Pipe
F: 1065

Y : G 1" / 232

Files & Manuals

There are no available files to download. Please contact us if you need any further information.