The Nu-Flame Evolution burner is a versatile gas fire, available for natural gas or LPG, which can be manufactured to suit a huge range of fireplaces including cast iron insets, fire baskets, see-through applications, marble suites and the most modern contemporary designs, such as hole-in-the-wall flatbed fires.
Manual Or Electronic Control Class 1 & Class 2 Flues
| Natural Gas | ||
| Model | Flue Class | Gas In. (kW) High Flame |
| N1 | 1 & 2 | 6.3kW |
| N2 | 1 & 2 | 6.9kW |
| N3 | 1 & 2 | 6.9kW |
| N4 | 1 | 9.0kW |
| N5 | 1 | 9.4kW |
| N6 | 1 | 11.0kW |
| LPG | ||
| Model | Flue Class | Gas In. (kW) High Flame |
| L1 | 1 & 2 | 5.2kW |
| L2 | 1 & 2 | 6.1kW |
| L3 | 1 & 2 | 6.1kW |
| L4 | 1 | 8.0kW |
| L5 | 1 | 8.6kW |
| L6 | 1 | 9.7kW |
Please note that the models listed here do not actually relate to a specific shape of gas fire. They represent the six different sizes of ceramic burner block which can be fitted into each pan depending on their size and shape.
The Evolution gas fire has both primary and secondary aeration, and the mixing of the gas and air prior to combustion gives a cleaner burn, extra heat output per kilowatt of gas consumed, and a warmer glow than any fire relying on secondary aeration only.
The Evolution gas fire has a solid fire bed, onto which is placed a loose arrangement of ceramic coals, pebbles, logs or driftwood. This random arrangement gives a more natural appearance than can be achieved with a fixed coal matrix.
The Evolution gas fire is available in many standard sizes. However, it can also be made to a specific size to fit an existing grate.


For the convenience of our customers we have combined Sales & Engineering into one department. Therefore, when you contact us you can speak to a sales engineer who can give you any advice you may need on all technical matters. Also, they can help you overcome any difficult design applications, in which some of our unique products, such as multi-burner fires, can be used.
Key Features of the Evolution Gas Fire
| Minimum Size | 185mm width x 125mm depth |
| Maximum Size | 1000mm width x 300mm depth (Special sizes and applications on request please call our sales department on 0208 254 6802) |
| Flue Class | Models are available for Class 1 & Class 2 Flues - see above charts |
| Gas | Natural Gas or LPG |
| Control System | Manual, Detached, Wall Switch or Infra Red |
| Fuel Bed | Coal, Pebble, Log or Driftwood |