Class 5 wood-fired boiler with 7 Flamme Verte stars

Table of Contents

GFI: combining environmental protection and performance
GFI: comfortable functionning
Models and accessories

GFI: combining environmental protection and performance

PERGE: a reference on wood boilers the market

With more than 70,000 homes heated with wood boilers since 1974, PERGE is a real reference on the French wood boiler market.

 PERGE GFI wood boilers meet the requirements of the EN 303-5 class 5 standard and the 7-star Flamme Verte standard, with useful yields of over 90%. Their installation with one or more buffer tanks, combined with climate control, gives them an unequalled level of performance in terms of efficiency, autonomy and heating comfort.

High efficiency, energy savings and environmental protection

The quality of the combustion is constantly analysed by an oxygen sensor (lambda sensor). This allows the flow rate and distribution of primary and secondary air to be continuously adjusted. The combustion efficiency of the boiler is thus optimised during the entire combustion process. In addition, the controlled combustion hygiene ensures low emissions of pollutants, regardless of the type of wood burned, and helps to protect our environment.

GFI: Comfortable functionning

Easy to load

PERGE GFI boilers have an oblique loading door at the top which gives full access to the firebox and allows easy loading of the entire volume of the combustion chamber.

The 15 and 20 kW models use 35 cm logs.

The 25, 30 and 40 kW models use 50 cm logs.

With a hydro-accumulator tank for more autonomy

The installation of PERGE GFI boilers with a buffer tank and a recycling kit allows the surplus energy to be stored during combustion and released on demand. In the off-season, when heating demand is low, the buffer tank provides maximum benefit, allowing for a significant autonomy of one day or more.

The large volume of the shop allows a 1,000 litre tank to be heated to 90° in a single load of wood with a 20 kW boiler.

With a small buffer volume, no recycling kit

The PERGE GFI boilers are equipped with an anti-corrosion protection device, so that a recycling kit is not required. In addition, the control system allows the boiler to be operated at lower outputs during the off-season, or even to install a smaller buffer tank, which means financial savings and space saving.

Fire holding

PERGE GFI boilers are equipped with a mechanical low fuel level detection device. When this is detected, the boiler switches from a combustion phase to a fire-holding phase, and remains for several hours waiting for refuelling. After this, a relighting is necessary.

Models and accessories

- Combustion control by oxygen sensor with action on the flow rate and distribution of primary and secondary air. (lambda sensor)
- Refractory ceramic post-combustion furnace.
- Factory fitted quench coil (allowing operation with a closed expansion vessel under nitrogen pressure).
- Factory fitted combustion control with touch screen control.
- Additional climate control can be fitted to control up to 2 heating circuits and domestic hot water, as well as solar heating or a boiler backup.
- Other equipment: heating tool, factory fitted reinforced insulation jackets
- Flue diameter: 150 mm.
- Maximum log length: 35 to 50 cm (depending on model)