Luton Council Central Depot

Client: Asgard Biomass Ltd


Working for Asgard Biomass Ltd who carried out the main installation of this biomass heating project serving the busy local authority depot and offices.


The project involved the site survey, design, manufacture, supply and installation of an 18.0m high free-standing stainless steel double wall chimney system serving a single ETA Hack 500 biomass boiler.


Holding down bolts and a template were sent for the main contractor to set into a mass concrete base inside the new plant room and a suitable hole through the roof of the building was cut. Chimney sizing and structural calculations based upon the proposed flue route and the surrounding location were prepared to ensure optimum performance of the appliance and the best termination height of the chimney system in order to comply with the Clean Air Act, TG09 and the Local Air Quality Management Area requirements. On the designated day the 18.0m chimney stack arrived on site in two flanged sections and was lifted up and lowered through the hole in the plantroom roof and onto the waiting bolts. Within an hour the base section of chimney was levelled, secured and ready for the second section to be lifted into place and the subsequent connection to the appliance made using Therminox TI. The project was ready for handover after just a single day on site.

Combustibles bois

Chimney System:

Connection from the appliance outlet to the vertical stack was made using Therminox TI comprising a 350mm inside diameter 316L grade stainless steel inner liner, 32mm of high grade, high density (130kg/m3) mineral wool insulation and a 414mm outside diameter 304 grade stainless steel out casing certified to BS EN 1856-1. Designed to T450 N1 W V2 L50050 G75. The freestanding 350mm inside diameter chimney stack was manufactured with a 316 grade stainless steel inner liner, 50mm of high grade, high density mineral wool insulation and a 600mm outside diameter mild steel structural shell certified to BS EN 13084-7:2012 T200 H0 D L10 and finished in a polyurethane powder coated brown colour as per the customer’s requirements.

Combustibles bois
Combustibles bois