INSTALLING THE FLUE
General.
The flue must be installed in accordance with:
Manufacturers Installation Instructions
British Standards including BS 5440 and BS EN 1319:1999
Gas Safety (Installation and Use) Regulations
IGE/UP/10 Part 1 Edition 2.
Building Regulation J
The flue must be installed by a competent, authorised person. It is the installer’s responsibility to ensure that the unit has been installed to all current requirements.
The Rinnai
The required clearance of the flue terminal is shown on page 28. A terminal guard cage must be installed over all terminals under 2m high.
The flue can be run horizontally or vertically. The maximum run should not be more than 7.0m, and for each 900 bend the maximum run is reduced by 1.0m, to a max. 3 bends.
The nature of the appliance will not cause condensation in the concentric flue pipe under normal operation if the flue is less than 2.5m. If the flue is over 2.5m the horizontal sections should slope back to the unit except for the horizontal section through the wall that should slope to the outside to prevent ingress of rainwater. The flue should be bracketed to prevent sagging.
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