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Instructions for the Installer
111
14.2 Room ventilation
The room containing the appliance should have an air supply in accordance with B.S. 5440 part 2 1989.
1 All rooms require an opening window or equivalent, and some rooms will require a permanent vent as
well.
2 For room volumes up to 5 m
3
an air vent of 100 cm
2
is required.
3 If the room has a door that opens directly to the outside, and the room exceeds 1 m
3
no air vent is
required.
4 For room volumes between 5 m
3
and 10 m
3
an air vent of 50 cm
2
is required.
5 If there are other fuel burning appliances in the same room B.S. 5440 part 2 1989 should be
consulted to determine the air vent requirements.
6 This appliance must not be installed in a bed sitting room of less than 20 m
3
or in a bathroom or
shower room.
Windows and permanent vents should therefore not be blocked or removed without first consulting a
Corgi gas installer. Failure to install appliances correctly is dangerous and could lead to
prosecution.
14.3 Combustion gas discharge
Combustion gases must be discharged by means of hoods connected to a flue with reliable natural
draught, or a fan extraction system. An effective extraction system requires careful design by an
authorised specialist, and must comply with the regulation distances and positions. After installation, the
engineer must issue a certificate of compliance.
14.4 Gas connection
Installation using a rubber hose compliant with the relevant regulations must be carried out in such as
way that the length of the pipeline does not exceed 1.5 metres; make sure that the hose does not touch
moving parts or become crushed. The inside diameter of the pipe must be 8 mm for LIQUID GAS and
13 mm for NATURAL GAS and TOWN GAS.
Check that all the conditions listed below are met:
• the hose must be fixed to the hose connector with a safety band clamp;
• the hose does not touch hot surfaces at any point (max. 50 °C);
• there are no traction forces or stresses acting on the hose and there are no tight bends or kinks along
its length;
• the hose does not touch sharp components or edges;
• if the hose is not perfectly gastight and causes gas leaks, do not attempt to repair it: replace it with
a new hose;
• check that the hose's expiration date, screen-printed on it, has not been passed.
CONNECTION USING A RUBBER HOSE COMPLIANT WITH THE RELEVANT STANDARDS IS ONLY
PERMITTED IF THE HOSE IS ACCESSIBLE FOR INSPECTION ALONG ITS ENTIRE LENGTH.
14.4.1Natural and town gas connection
Make the connection to the appliance using flexible bayonet style hose in
accordance to B.S. 669. The hose connection at the rear of the appliance has a
½” BSP internal thread. Please use seal C between the flexible connection L and
the appliance supply tube B. When making the connection, make sure that no
stress of any kind is applied to the cooker and that the hose does not touch any
sharp edges. If connecting to LPG the bayonet hose must have red bands on
it.