Midtherm Flue Systems Ltd

Midflex (in 316L & 904L steel)

HETAS ID:	EC042
App. Type:	Double Skin Flexible Chimney Relining Systems
Certificate Ref:	E-C042-2022
Std. Tested to:	BS EN 1856-2:2009 and 1443:2003
Flue Sizes:	100, 125, 150*, mm

Performance

HETAS has audited and verified that all applicable clauses in the test report have been passed in respect of the materials, design, and construction in accordance with the relevant BS EN type test standard for the appropriate technology, performance criteria of which is below;

Temperature Level	T450
Pressure Level	N1
Condensate Resistance	D
Corrosion Resistance	Vm
Flue Liner Material Specification	L50050
Sootfire Resistance (G:yes or O:no) and distance to combustible material (in mm)	G80

Safety

The product certified has been assessed for its suitability for installation in domestic properties against the requirements of the Building Regulations and appropriate standards. The performance of the appliance has been verified as meeting the following technical performance attributes;

Combustible Clearances	80 mm
CE Mark Certificate	> 316L - CE Mark No. 2797-CPR-597284. 904L - CE Mark No. 2797-CPR-603464.

*HETAS product approval is not valid for appliances fitted with an external air supply ducted directly to the appliance. The installer should reference HETAS technical note TN_0020 General Guidance for the Installation, Risk Assessment & Commissioning of Solid Fuel Appliances with a Dedicated External Air Supply for more information.

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