The conversion of net efficiency to gross was achieved by multiplying the net
efficiency by the following conversion factor from Table E3 of SAP 2005, rounding
down to the nearest whole number.
4. GENERAL INSTALLATION REQUIREMENTS
4.1 Regulations, Standards and Law.
The installation must be in accordance with these instructions.
For the user’s protection, in the United Kingdom it is the law that all gas appliances
are installed by competent persons in accordance with the current edition of the Gas
Safety (Installation and Use) Regulations. Failure to install the appliance correctly
could lead to prosecution. GAS SAFE REGISTER and CORGI require their members
to work to recognised standards.
In the United Kingdom the installation must also be in accordance with:
All the relevant parts of local regulations.
All relevant codes of practice.
The relevant parts of the current editions of the following British Standards:-
BS EN 1856 Part 1 - Chimneys - Requirements for metal chimneys.
BS 715 - Specification for metal flue boxes for gas-fired appliances not
exceeding 20kW.
BS EN 1858 - Chimneys - Components - Concrete flue blocks.
BS EN 1806 - Chimneys - Clay / ceramic flue blocks.
BS 5440 Part 1 - Installation of flues.
BS 5440 Part 2 - Installation and maintenance of flues and ventilation for gas
appliances of rated input not exceeding 70 kW net (1st, 2nd
and 3rd family gases).
BS 6461 Part 1 - Masonry chimney & flues - Installation
BS 1251 - Fireplace components
BS 5871 Part 2 - Installation - Inset LFE gas fires
BS 6891 - Gas pipework installation
- In England and Wales, the current edition of the Building Regulations issued by the
Department of the Environment and the Welsh Office.
- In Scotland, the current edition of the Building Standards (Scotland) Regulations
issued by the Scottish Executive.
- In Northern Ireland, the current edition of the Building regulations (Northern Ireland)
issued by the Department of the Environment for Northern Ireland.
Page 10
© GDC Group Ltd 2014
INSTALLER GUIDE
Gas Conversion factor from net to gross efficiency
Natural Gas 0.901
LPG 0.921
To Next Page
Loading...
Need help?
General
