Riello RS 70/E MZ Bedienerhandbuch PDF herunterladen (Seite 17)

4.8 Assembly of the gas train

³ The gas train is type-approved according to standard EN 676 and is sup-

plied separately from the burner, with the code indicated in Appendix B.

³ The gas train can enter the burner from the right or left side, depending

on which is the most convenient, see Fig. 19.

³ The gas train must be connected to the gas attachment 1)(Fig. 19) with

the flange 2), the gasket 3) and the screws 4) supplied with the burner.

³ The gas solenoids must be as close as possible to the burner, to ensure

that the gas reaches the combustion head within the safety time of 3 s.

³ Ensure that the maximum pressure necessary for the burner is included

in the calibration field of the pressure adjuster (colour of the spring): gas

train MBC-1900-SE.

The losses of load along the gas supply line are indicated in Appendix C.

See the accompanying instructions for the adjustment of

the gas train.

D722

Fig. 19

WARNING

L1 L

D3735

1 - Gas input pipe

2 - Manual valve

3 - Vibration damping joint

4 - Pressure gauge with pushbutton cock

5 - Filter

6A - “Threaded” multibloc including:

- filter (can be replaced)

- safety valve

- working valve

- pressure adjuster

6B - “Flanged” multibloc including:

- safety valve

- working valve

- pressure adjuster

7 - Minimum gas pressure switch

8 - Valve leak detection control device.

In accordance with the standard EN 676,

leak detection is compulsory for burners with

maximum outputs of more than 1200 kW.

9-Gasket

10 - Gasket supplied with burner

11 - Gas adjustment butterfly valve

12 - Maximum gas pressure switch

13 - Gas train/burner adaptor

- supplied with burner

- supplied on request separately from the

gas train for the flanged versions

P1 - Pressure at combustion head

P2 - Upstream pressure of valves/adjuster

P3 - Pressure upstream from the filter

L - Gas train supplied separately with the

code indicated in Appendix B.

L1 - The responsibility of the installer

Fig. 20

Installation

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 55 56

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