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Installation Instructions
Alpha Twin Pipe Flue Systems
Suitable for use with the
Alpha 240, 280 and 500 Range of gas fired
combination boilers
For Technical help or for Service call ...
ALPHA HELPLINE
Tel: 0870 3001964
Nepicar House, London Road,
Wrotham Heath, Sevenoaks,
Kent TN15 7RS
These instructions must be read in conjunction with the Installation instructions supplied with the boiler.
Only flue components supplied by Alpha may be used with Alpha boilers, failure to comply will invalidate
the boiler's warranty and CE approval, and may be unsafe.
0051
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Summary of Contents for Alpha Alpha Twin Pipe Flue Systems
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Page 1: Installation Instructions
These instructions must be read in conjunction with the Installation instructions supplied with the boiler. Only flue components supplied by Alpha may be used with Alpha boilers, failure to comply will invalidate the boiler's warranty and CE approval, and may be unsafe. - Page 2 Note: i) Ensure the flue length does not exceed the equivalent shown in the table above. ii) Alpha 500E - Remove the air restrictor when the flue length is more than 6 m. Each 90° Bend (80 mm) is equivalent to 0.50 m of flue length.
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Page 3: Flue Options
FLUE OPTIONS HORIZONTAL FLUE OPTIONS - Lmax = 10 m (except Alpha 280E where Lmax = 6 m) L = Equivalent length of flue or air duct (a 90° bend is equivalent to 0.50 m of flue length and a 45° bend is equivalent to 0.25 m of flue length). - Page 4 VERTICAL FLUE OPTION - Ridge tile Hmax = 7 m Lmax = 10 m (except for Alpha 280E - Lmax = 6 m) A = H + (C + B + 10 mm) + (50 mm for each connection in straight ducting) Fig. 4...
- Page 5 Flue duct adaptor Air duct adaptor Clamp and seal Boiler flue adaptor Top of boiler Cover plates Fig. 5 Alpha 240 Range, 280E Air duct adaptor may be fitted right or left side Alpha 500E Fig. 6 Twin Pipe Flue Systems...
- Page 6 ASSEMBLE THE FLUE DUCTS Particular site conditions will dictate the sequence in which the flue is assembled. However, start assembling the flue system at the boiler noting the following:- Cut 85 mm holes for plain flue/air ducts. Cut 100 mm holes for flue/air ducts with connection sockets. Note: All parts of the flue duct must be at least 25 mm from combustible material.
- Page 7 HORIZONTAL TERMINAL POSITIONING Separated flue duct terminal Separated air duct terminal Fig. 8 Fig. 9 Flue and air ducts located together on the same wall Flue Min. 300 Min. 120 Min. 120 Fig. 10 Vertical terminal (see Fig. 3) Refer to Fig. 3 for positioning of the vertical terminal in the roof. Note: Under no circumstances must the terminal be shortened in length.
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Page 8: Flue Terminal Location
These instructions have been carefully prepared but we reserve the right to alter the specification at any time in the interest of product improvement. © Alpha Therm Limited 1996. t e l e l i i l b...
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