Concentric with sealing ring
A concentric flue system combines the flue gas outlet and air inlet. The flue gases are evacuated through the inner pipe and the combustion air is supplied through the outer pipe. Both pipes are fitted with a sealing ring to seal them. This makes it a very safe solution with a choice of 3 different systems.
Safe with concentric
That is Cox Geelen’s vision into which this new innovative system perfectly fits. Carbon monoxide (CO) is an underestimated and unrecognized danger. Carbon monoxide poisoning is often caused by modern heating appliances. To reduce the risk of such poisoning, it is advisable to install a concentric flue gas system.
Advantages concentric
A plastic flue gas pipe expands more than a metal pipe when heated. Our concentric system takes account of this expansion. The expansion of the inner pipe will not lead to the break-up of the concentric flue gas pipe. In the unlikely event of a leak in the flue gas pipe, the flue gases entering the combustion air supply pipe are routed to the combustion heater. An excessively high content of recirculated flue gas will cause the boiler to shut down. This prevents a dangerous situation for residents.
Specifications CoxDENS® PP/Alu
- Flue pipe is made of Polypropylene.
- Outer pipe is made of aluminium.
- Available in Ø 60/100, 80/125, 100/150 and 110/150 mm in the colour white (RAL 9016).
- CE marked according to EN 14471.
Specifications CoxCentric® Alu/Alu
- Flue pipe is made of aluminium.
- Outer pipe is made of aluminium.
- Available in Ø 60/100, 80/125 and 100/150 mm in the colour white (RAL 9016).
- CE marked according to EN 1856-1.
Specifications CoxCentric® Stainless Steel/Alu
- Flue pipe is made of Stainless Steel.
- Outer pipe is made of aluminium.
- Available in Ø 80/125 and 100/150 mm in the colour white (RAL 9016).
- CE marked according to EN 1856-1.
At the end of their lifecycle these products can be completely recycled.
Additional safety with a fire-resistant wall plate
These are round fire-resistant wall plates with integrated fireproof plate and fire protection seal. With these revolutionary wall plates you can neatly cover an opening in the wall and also provide a fire and carbon monoxide safe situation in the home. Why round? Mounting can not go crooked and the slope of 3° is included in the design.