6.2.2 Planning the gas installation
Rules for safe gas installation of the appliances
Observe the following rules to prevent hazards caused by faulty gas connections:
■
The combi oven is supplied from the factory for operation with a defined gas type (see appliance
type plate). In order to operate the combi oven using different gas types, a qualified member of
staff from an authorized service company must first convert the combi oven.
■
After connecting to the gas supply and after any subsequent operation on gas-carrying compo‐
nents, always check for leaks at every connection point and supply point to gas-carrying compo‐
nents. Ensure that all the specified points inside and outside the appliance are gastight before put‐
ting the combi oven into service.
■
For table-top units with a wheeled platform, the gas supply must be provided via a flexible gas sup‐
ply pipe.
■
For table-top units on a wheeled platform, the length of the gas supply pipe must accommodate the
range of movement allowed to the appliance by the retaining device of the wheeled platform. When
moving the assembly (platform plus appliance), never strain or wheel over the gas supply pipe.
Type of gas appliance
The combi oven is the following type of gas appliance:
Type of gas appli‐
ance
Meaning
B23 Open flues dependent on room air
■
With burner fan upstream of the burner and
■
Without draft diverter
Gas installation regulations and customer-supplied fittings
The table below shows what equipment must be provided by the customer and what regulations must
be observed when connecting the appliance.
Equipment Regulations
Fixed connection The appliance is designed to be permanently connected to the customer's
gas supply. Position of the gas supply: Point J in the connection drawing.
The appliance must be secured in place.
Gas shut-off device A gas shut-off device must be fitted close to the appliance. The gas shut-
off device must be easily accessible, and situated so that it can also be
shut off in a hazardous situation.
Pressure regulator A pressure reducer must be fitted if the supply flow pressure is too high.
All connection compo‐
nents
All connection components provided by the customer must be tested in
accordance with local and national regulations.
Providing a guaranteed supply of combustion air
In order to ensure a sufficient supply of combustion air, take specific measures according to the instal‐
lation situation and power of the combi oven in accordance with local regulations, standards and direc‐
tives. As the responsible gas fitter, you must ensure there is an adequate supply of combustion air.
Please note the following points:
■
The amount of combustion air required depends on the rated gas consumption; see 'Exhaust gas
output rate' on page 134.
Providing reliable ventilation
The appliance produces combustion gases that must be vented to the outside air via suitable gas ex‐
haust conduction. It is essential to follow the relevant information in the topic 'Adjacent systems' on
page 47.
6 Installation
88
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