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Gas connection
The oven has been tested for operation with methane gas (G 20) at 20 mbar
pressure.
The connection to the gas main must be made with a rigid steel or copper pipe
or flexible stainless steel hose with continuous walls as provided in standard
UNI-CIG 7129.
Make sure that the oven is regulated for the type of gas with which it is to be
used. If not, refer to "Adaptation to other types of gas".
If the installation includes both a gas cooktop and build-in gas oven, it is absolutely
forbidden to connect the two appliances on a single line or install a single shut-off
valve for both appliances.
The two appliances must be connected to the gas main separately, and each must
have its own shut-off valve to ensure that they are independent of each other.
Connection with rigid pipe
The connection to the gas mains must be done in such a way as to avoid any type of mechanical stress to the oven.
The gas intake fitting is a male 1/2 inch threaded gas union. It is possible to make the connection with a double-cone
adapter (C), making sure to fit the provided gasket (B).
Connection with flexible steel hose
The gas intake fitting is a male 1/2 inch threaded gas union. Use only continuous-wall stainless steel hoses compliant with
established standard UNI 9891, making sure to fit the provided gasket (B) between fitting (A) and the hose (D). Hoses of
this type must be routed in such a way as to ensure that they do not exceed a total length, when fully extended, of 2 m.
Caution: Make sure that the flexible steel hose is not touching moving parts or crushed.
Liquid gas connection
To connect the oven to a liquid gas supply, use a gas canister pressure regulator compliant with established standard
UNI-CIG 7432, and make the connection itself in compliance with established standard UNI-CIG 7131. Caution: make
sure that the supply pressure is within the values indicated in the "Burner and nozzle specifications table".
Tightness check
Once the gas connection has been completed, check that all fittings and unions are perfectly tight using soapy water
(DO NOT use an open flame for this).
Adaptation to other types of gas
To adapt the oven to other types of gas than that for which it is originally equipped (see the dataplate visible at the centre
of the oven base when the door is open), proceed as follows:
a) Replace the burner nozzle
– open the oven door fully
– push the oven floor back
– lift the front of the oven floor and pull it forwards (fig. 7a)
– unscrew the burner mounting bolt
– remove the burner (B) from the oven after having removed the bolt (V) (fig. 7b)
– unscrew the burner nozzle (U) with a suitable nozzle tube wrench, or preferably with a 7 mm tube wrench, and
replace it with the type suited to the new type of gas (see table 1). Take care not to damage the spark plug wires and
thermocouple tubes (fig. 7c).
– refit all components in reverse order.
Adjusting the oven burner primary air
b) The burner is designed to not require adjustment of the primary air supply.
Important
On completion of the procedure, replace the old calibration sticker with the one for the new type of gas, available
from our Authorised Service Centres.
Note
If the gas pressure is different (or variable) from that specified, install a pressure regulator on the delivery hose
(as provided in UNI-CIG 7430 "Regulators for ducted gas").
Minimum flame adjustment
1. Switch the oven on and set to Max. for about 10 min.
2. Turn the temperature control knob D to Min.
3. Remove knob D.
4. Turn the flame adjustment screw located next to the thermostat pin until the flame is small but steady.
5. Refit knob D.
6. Make sure the flame does not go out when turning quickly from Max. to Min. and vice versa.
22
SM 51 G / CM 55 G
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A
A
B
B
D
C
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