Smeg PX 140 A, Instruction Manual

Instructions for the Installer

12 

6.

Gas connection 

This appliance is suitable for installation with Natural Gas or 
ULPG (propane/butane). Refer to page 12 for the relevant 
burner pressure and appropriate injector sizes. When the 
appliance is to be connected to Natural Gas then the pressure 
regulator supplied must be fitted to the gas inlet. A test point (for 
checking the gas pressure) is supplied either with the regulator 
or as a separate fitting in the case of ULPG (propane/butane) 
appliances. 
Connection of the appliance to the gas supply must be in 
accordance with the requirements of AS5601. A ½” BSP 
connector at the inlet is recommended and the gas supply line 
to the appliance must be of adequate length to allow sufficient 
withdrawal of appliance for service or disconnection and be: 

1.

annealed copper pipe or; 

2.

flexible hose according to AS/NZ1869 & be at least Class “B”, 10 mm  diameter. 

The appliance must be installed with provision to allow the gas to be turned off and 
disconnected for servicing and removal of the appliance as required from the gas 
supply. Before the appliance is operated make certain all relevant parts are placed in 
the correct position. When the installation is completed the installation connections of 
appliance will require to be leak tested, the burner operating pressure and flame 
checked and adjusted. Warranty service calls do not cover these adjustments! To check 
the operating pressure of the appliance it is recommended at least 2 large size burners 
are used. Ensure appliance is secured to wall when installation is completed. N.G. The 
regulator supplied must be fitted to the ½ BSP thread at the rear of the appliance. An 
approved manual shut-off valve must be installed. The N.G. regulator must be checked 
and adjusted to 1.0kPa after installation. 

U.L.P.G.

 Can be connected to the inlet fitting directly. The 

pressure must be checked to ensure it is operating at 
2.75kPa. A separate test point fitting must be installed 
between the piping & the appliance for the pressure to be 
checked to ensure it is operating at 2.75kPa. 

Installation with the flexible hose must be carried out so that the length of the piping 

does not exceed 2 metres fully extended; make sure that the hoses do not come into 
contact with moving parts and that they are not crushed in any way. 

6.1

Connection to liquid gas 

Use a pressure regulator and make the connection on the gas cylinder following the 
guidelines established by the regulations in force. Make sure that the feed pressure 
complies with the values indicated in the table at point “9.2 Burner and nozzle 
characteristics table”. 

6.2

Room ventilation 

Caution – This hob may only be installed and operated in rooms permanently 
ventilated in accordance with current regulations. For proper operation of a gas 
appliance it is essential for the air necessary for combustion of the gas to be able to 
flow naturally into the room. Air must flow directly into the room through openings in its 
outside walls. This (these) opening (s) must have a free passage cross-section of at 
least 100 cm2, or 200 cm2 for appliances not equipped with gas safety device. These 
openings must be constructed so that they cannot be obstructed indoors or outdoors, 
and should preferably be close to the floor on the side opposite to the combustion gas 
discharge point. If it is not possible to make the openings in the room where the 
cooker is installed, the necessary air may be taken from an adjoining room, proveded 
it is not a bedroom or a room with fire risk. 

6.3

Combustion gas discharge 

Combustion gases may 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.