Gas Connection - CDA SC309 Series Manual For Installation, Use And Maintenance

20

Gas Connection

The installation of the gas appliance to Natural Gas or LP Gas must be carried out by a suitably qualified
and registered installer. Installers shall take due account of the provisions of the relevant British Standards
Code of Practice, the Gas Safety Regulations and the Building Standards (Scotland)(Consolidation)
Regulations issued by the Scottish Development Department.
Installation to Natural Gas
Installation to Natural Gas must conform to the Code of Practice, etc.
The supply pressure for Natural Gas is 20 mbar.
The installation must conform to the relevant British Standards.
Installation to LP Gas
When operating on Butane gas a supply pressure of 28-30 mbar is required. When using Propane gas a
supply pressure of 37 mbar is required.
The installation must conform to the relevant British Standards.
Warning: Only a suitably qualified and registered installer, also with technical knowledge of electricity
should install the appliance. He should observe the Regulations and Codes of Practice governing such
installation of gas appliances.
Note: It is recommended that the gas connection to the appliance is installed with a flexible connecting
tube made to BS5386.
Notes:
– Flexible hoses can be used where the sited ambient temperature of the hose does not exceed
70°C. These hoses must be manufactured in accordance with BS669 part 1 and be of the
correct construction for the type of gas being used.
– Gas hoses designed for natural gas MUST NOT be used for supplying LPG gas (LPG gas hoses
can be identified by a either a red band or stripe on the rubber outer coating of the hose).
The hose should not be crushed or trapped or be in contact with sharp or abrasive edges.
If installation is to be carried out using a flexible connector (to BS669), then the following points must be
adhered to:
Note: The gas installation pipes and the final connection to the appliance connecting pipe shall be
sufficient size to maintain the heat output of the appliance as specified under installation.
1. The appliance flexible connector should not be subject to undue forces, either in normal use whilst being
connected or disconnected.
2. The appliance flexible connector should not be subject to excessive heat by direct exposure to flue
products or by contact with hot surfaces.
3. The socket into which the plug of the appliance flexible connector fits should be permanently attached
to a firmly fixed gas installation pipe and positioned such that the hose hangs freely downwards.
4. The appliance flexible connector should be positioned such that it will not suffer mechanical damage; eg
abrasion from the surrounding kitchen furniture which may be moved in use, such as a door or drawer,
or by being trapped by a stability device.
5. The plug-in connector should be accessible for disconnection after moving the appliance.