Flue Systems; Installation Of Flue; Terminal Location - andrews OFS25 Installation Manual, Operation And Service Manual

SECTION 3

FLUE SYSTEMS

INSTALLATION
OF FLUE
Fig. 1
TERMINAL
LOCATION
8
INSTALLATION
Detailed recommendations for flue installation are given in BS5410 PT 1 and
BS5410 PT 2
The Building Regulations allow the use of stainless steel under the term "Deemed to
Satisfy" but the minimum thickness must be 0.71mm (22swg).
We recommend that Selkirk SMW Flue System is used to the following specification:
Twin Wall, Insulated, Stainless Steel.
The flue route should be as vertical as possible avoiding sharp bends and horizontal runs.
It is recommended that each heater should be fitted with its own individual flue.
It is essential that separate flues are used for equipment using oil and equipment using
solid fuel.
A draught stabiliser is fitted to ensure burner flame stability.
If a common flue header is to be used see page 10.
Notes: 1. Draught stabiliser to be fitted to appliance (see page 9).
2. Male flue spigots to point downwards inside building to keep flue clean.
3. Use changeover section going through roof so that male spigots point
upwards outside the building to assist weatherproofing.
4. The flue should be kept a safe distance from any combustible material
especially when going through the roof (joists etc).
This must be at a height at least level with the highest point of the building roof and not
subject to down draught. Ideally the flue should terminate 1m higher than the highest
point of the roof, or at least 1m higher than the section of roof through which it projects.