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hydraulic connections
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of Pipework Systems. Failure to correctly clean the
system may lead to incorrect operation and non-
warrantable failures.
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with a rigid metal pipe. Any gas meter should be sized for
simultaneous use of all the gas appliances connected to it.
Connect the gas to the appliance according to the standards
in force. The diameter of the gas connection of the appliance
does not determine the diameter of the gas supply pipework.
Gas supply pipework should be selected and installed in
accordance with IGEM/UP/2 Edition 3.
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(not supplied) should be installed in the gas supply
pipework next to the appliance.
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connected to a gas supply for which it has been
manufactured or converted. Details on gas conversion
can be found in section 15.4 or 15.5. The supply of any
other type of gas to the appliance is prohibited.
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(installer’s responsibility)
The appliance is supplied without an overpressure safety
valve. the system designer or the installer must select an
appropriate valve for the maximum system pressure and
output rating (maximum working pressures and output of
the appliance care detailed in section 18). The discharge
pipe from the safety valve shall fall continuously from the
point of connection to its termination so that the discharge
pipe shall be self-draining and shall terminate in a visible
position and where discharge cannot result in hazard to any
person or to the appliance.
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operate.
10.3 - Examples of boiler installations
Figure 10-1 - Example of boiler connection diagram
Figure 10-1 KEY
1 Boiler 60T-280T model boiler
3 INAIL manometer
4 INAIL thermometer
7 Gas cock
10 Gas inlet
11 Expansion tank
12 Micro-bubble separator
13 External temperature sensor
14 Filter
15 Electrical power supply
16 Low or high temperature heating system
17 System loading unit
18 Domestic cold water
19 Heating circuit pump
20 - Hydraulic separator
21 Air bleed valve
36 Main circuit pump
37 Room thermostat or equivalent system
57 Drain cock (Mandatory in the 70 and 140 models)
58 Manifold sensor
B Expansion Relief Valve
C Pressurisation Unit
D Lock-Shield Valve
