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0 site requirements – Baxi Potterton BBU 15 HE User Manual

Page 16

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5.0 Site Requirements

16

© Baxi Heating UK Ltd 2009

5.5

Flue

1. The following guidelines indicate the general

requirements for installation of flues.

For GB recommendations are given in BS 5440 Part 1.

For IE recommendations are given in the current edition

of I.S. 813 “Domestic Gas Installations”.

2. Only one of the two available MULTIIFIT vertical

concentric Flexi Flue kits approved for use with the

boiler can be used (10m kit 720101701 or 12.5m kit

720102001). Any proprietary flue systems, terminals,

adaptors etc. MUST NOT BE USED.

3. The available flue kits are intended for installation

within an existing chimney. This should be clean and

sound, and any other previously installed flue

components (liners, dampers etc.) removed.

4. The flue must have a minimum vertical height of 3m

and have no bends greater than 45°.

NO HORIZONTAL RUNS ARE PERMITTED !

5. The terminal must be sited so that free passage of air

across it can occur at all times.

6. It must also be a MINIMUM of 150mm from any

other terminals or obstructions (A). When adjacent to

windows or openings on pitched or flat roofs it must be

at least 600mm away (B). A minimum dimension of

2000mm must be maintained when below windows or

openings in pitched roofs (C) (Fig. 10).

B

C

A

Fig. 10