Potterton Sirius Three WH-130, Installation, Operation And Maintenance Manual

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3. INSTALLING THE FLUES
The boiler is easy and flexible to install thanks to the extensive range of available accessories, as described below. The boiler has
been designed for connection to a vertical or horizontal concentric flue.
WARNINGS
C13, C33 The terminals for separate flues must be fitted in accordance with the BS standard and the Clean Air Act 1993. Detailed
instructions are provided with the individual accessories.
For optimal installation, the accessories supplied by the manufacturer should be used.
TABLE 1A
If the flue and air ducts installed are not supply by
POTTERTON COMMERCIAL, make sure they are
certitied for the type of use and have a maximum pressure
drop as indicated in the table to the side.
∆P (Pa)
WH-130
180
WH-150
270
To optimise operating safety, make sure the flues are firmly fixed to the wall with suitable brackets for every 1 metre of flue.
Make sure there is a minimum downward slope of 5 cm (3 degrees) per metre of duct towards the boiler.
SOME OUTLET FLUE INSTALLATION EXAMPLES AND THEIR RELATIVE MAXIMUM LENGTHS ARE SHOWN IN CHAP.
"CONCENTRIC FLUES" .
4. CONCENTRIC FLUES
This type of flue is used to discharge exhaust fumes and draw
combustion air both outside the building. The 87° concentric
bend allows the boiler to be connected to a flue-air in any
direction as it can be rotated by 360° It can also be used as a
supplementary curve combined with a concentric flue or a 45°
bend.
If fumes are discharged outside the building, the flue-air must
protrude at least 200 mm from the wall to allow weathering
surround to be fitted and sealed to avoid water infiltrations.
• The 87° bend reduces the total flue length by 1 metre.
• The 45° bend reduces the total flue length by 0.5 metres.
•
The first 87° bend is not included when calculating the
maximum available length.