Room output
This is the heat output delivered directly to the room. Match it to your room’s heat loss, insulation and ceiling height; a higher output is not always a better fit.

The BURNiT NWB MAX 55 is a 55 kW solid fuel boiler for water-based central heating. When planning the boiler room, check the appliance dimensions, flue size and access for delivery.
| Nominal heat output | 55 kW |
|---|---|
| Dimensions (height × width × depth) | 1125 × 624 × 990 mm |
| Boiler weight | 330 kg |
| Flue diameter | 180 mm |
| Water connection | R 1¼ |
| Manufacturer reference | 00081230002525 |
This is the heat output delivered directly to the room. Match it to your room’s heat loss, insulation and ceiling height; a higher output is not always a better fit.
Check this connection size with your installer before ordering. Diameter alone does not confirm chimney suitability: draught, ventilation and required clearances also matter.
| Nominal heat output | 55 kW |
|---|---|
| Dimensions (height × width × depth) | 1125 × 624 × 990 mm |
| Boiler weight | 330 kg |
| Flue diameter | 180 mm |
| Water connection | R 1¼ |
| Manufacturer reference | 00081230002525 |