FLUES

[Trouble666]

Hi!
I've got my ACS in May, and can't seem to understand from textbooks;

Can someone please explain the various types of OpenFlues, e.g. Precast/RidgeTile/Chimney?

Much Appreciated

 

[ollski]

Chimney generally refers to a 9x9" brick chimney that was made to run a coal fire on older properties
Precast is built of concrete flue blocks in the wall usually going to an adaptor in the loft where it turns to twin wall flue pipe and connects to:
Ridge tile which is just the flue terminal which sits with the tiles on the ridge of the roof but allows flue gases to escape.

You may need to put that acs back a little or read books alot!

 

[doitall]

Approved document part J

 

[gremlin16]

Flue Types
Flue information should be used as a guide only. A professional fireplace survey is recommended prior to purchase/installation.

Chimney - Class 1
The conventional brick chimney - clearly defined by a chimney stack and pot on the roof of a property.

Pre-Cast - Class 2
Hollow concrete flue blocks create a flue up through the property usually terminating with a ridge vent on the roof.

Pre-Fabricated - Class 2
A metal flue box situated behind the fire connects to a series of metal flue pipes run up through the house terminating with a pipe and terminal through the roof.

Power Flue
Where no chimney or flue is available. A quiet but powerful fan situated on an outside wall expels the flue gases from the fire. Mains electricity required.

Balanced Flue
Where no chimney or flue is available. The fire vents directly outside through a horizontal twin wall pipe. These fires are glass fronted. No mains electricity is required.

 

[doitall]

There could be a flue available but choose not to use it.


A balanced flue appliance is a type of
room-sealed appliance which draws its
combustion air from a point outside the building
adjacent to the point at which the combustion
products are discharged, the inlet and outlet
being so disposed that wind effects are
substantially balanced. Balanced flues may run
vertically, but in the most common configuration
they discharge horizontally through the external
wall against which the appliance is situated.

 

[Trouble666]

Thanks for your replies