Cascade boiler installation with the Schiedel Metaloterm® MF system.

The Metaloterm® MF system is a modular twin wall insulated flue/chimney system, made of stainless steel, with a sealing ring. Metaloterm® MF is a universal flue/chimney system which is suitable for both high and low temperatures, non-condensing and condensing applications with flue gasses in positive and negative pressure. It can resist a chimney fire.

Therefore the system is suited for a wide range of applications such as boilers, stoves and ovens. The product range also contains a wide variety of silencers. For Passive houses the Metaloterm assortment provides the Iso-block which can be combined with MF. The system can also be used for CHP applications, in this case a special VITON® sealing ring might be necessary. Due to the proven quality Metaloterm® MF has a 10 year guarantee.

APPLICATIONS

ADVANTAGES

Atmospheric gas-fired boilers
Condensing boilers
Wood-fired stoves
Industrial ovens, large-scale establishments

Universal chimney/flue system
Inner- and outer wall from high quality stainless steel
No terminal bridges, uninterrupted insulation from base plate to top stub
Stress free thermal expansion
Fast-build system without the need of sealants

Compatible with system Metaloterm® ME, UE and EN
High density and high quality insulation
High-temperature silicone sealing ring
Lightweight elements
Immediately ready for use
Chimney fire resistant

Details	Information
Application	Chimney/Flue system
Operating mode	Dry/wet
Pressure	Negative/positive pressure
Max. working pressure	5000 Pa
Operating temperature	600 °C negative pressure, 200 °C positive pressure
Max. temperature allowed	600 °C negative pressure, 200 °C positive pressure
Inner wall material	AISI 316L/EN 1.4404
Inner wall thickness	Ø100 – Ø250: 0,4 Ø300 – Ø400: 0,5 Ø450 – Ø700: 0,6 Ø800 – Ø1000: 0,8

Details	Information
Outer wall material	AISI 304/EN 1.4301
Outer wall thickness	Ø100 – Ø400: 0,5 Ø450 – Ø700: 0,6 Ø800 – Ø1000: 0,8
Insulation type	Mineral wool
Insulation thickness	Ø100 – 400: 25 mm, Ø450 – Ø600: 37,5 mm, Ø700 – Ø1000: 50 mm
Fuel type	Gas
Sealant	Elastomer
Fuel type	Oil/wood/coal/pellets normal(wood)/gas
Sealant	Elastomer (in case flue gas temperatures exceed 200°C, sealants as well as the cap and sopor seals have to be removed before installation)

Inner diamter (mm)	100	130	150	180	200	250	300	350	400	450	500	600	700*	800*	900*	1000*
Outer diameter (mm)	150	180	200	230	250	300	350	400	450	525	575	675	800	900	1000	1100
Cross Section (cm2)	79	133	177	254	314	491	706	962	1256	1590	1963	2826	3848	5027	6362	7854
Weight ±kg/m	6	7	8	9	10	12	16	19	21	26	28	34	44	58	65	72

*Only on request

Bunhill 2 Energy Centre

BBC Maida Vale

Black Lake

Airtherm design, supply and install a wide range of efficient, high performance systems including flues & chimneys, natural ventilation & lighting, kitchen ventilation, air conditioning (comfort cooling), heat recovery & heat pumps and solar photovoltaic (PV) panels for commercial, industrial and private sectors. They use products of the highest quality, such as the Schiedel Metaloterm range and can boast experienced engineers with excellence in their field.

Falcon Flues are expert Schiedel chimney system installers. An MF flue system was specified to serve 2 No 1200 KW Hartley & Sugden forced draught boilers at the BBC Studios in Maida Vale due to the the existing flue liner within a freestanding concrete stack collapsing. 2 No 400mm ID stainless steel twin wall insulated flue systems were installed from the boilers through to outside the boiler room and then up the outside of the concrete stack for 15 metres.

Another project from Airtherm Flue Systems Limited, using the Metaloterm MF System in a recent project for Greggs. The Metaloterm® MF system is a modular twin wall insulated flue/chimney system, made of stainless steel, with a sealing ring. Metaloterm® MF is a universal flue/chimney system which is suitable for both high and low temperatures, non-condensing and condensing applications with flue gasses in positive and negative pressure.