Riello 3768000, Инструкции по установке, использованию и обслуживанию

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6
2902768
GB
3.4 GAS TRAIN
(as EN 676)
GAS TRAIN PRESSURE LOSS
The gas train pressure loss

p is provided from the diagram; the scales of the volumetric output are valid
respectively for:
a = air,
n = natural gas (G20),
p = propane (G30),
c = city gas (G140), only for applications not covered by the Gas Appliances Directive.
The value indicated in the diagram will differ according to the adjustment of the pressure stabilizer.
The minimum necessary pressure in the network can be obtained by adding the pressure of the diagram to
the burner pressure losses and the back pressure of the combustion chamber (see the technical instruction of
the heat generator).
KEY TO LAY-OUT
1 - Gas supply pipe
2 - Manual cock
(Supplied by the installer)
3 - Antivibration joint
(Supplied by the installer)
4 - Gas pressure gauge
(Supplied by the installer)
5 - 90° manual gate valve
(supplied standard)
6 - Filter
7 - Gas pressure switch
8 - Safety valve
9 - Adjusting valve
10 - Pressure stabilizer
11 - Brake adjustment
12 - Stabiliser adjustment
13 - Valve adjustment
14 - Valve - burner adaptor
15 - Flange 90°
16 - Flange fixing screws
17 - Sealing rings
M1 - Gas-supply pressure test point
M2 - Test point for measuring pressure
after stabilising
M3 - Pressure coupling test point
COMPONENTS
The multibloc is composed by :
1 - Filter
1 - Gas pressure switch
1 - Pressure stabilizer
2 - Solenoid valves:
- safety valve with fast opening.
- adjusting valve with slow opening.
Type MBDLE 055 D01
Use
Natural gas and LPG
D4195
5
1/2”
7
15
16 17
1
11
12
M2 M3
M1
14
16
17
13
Fig. 4
V
°