Riello RS 34/1 MZ, Installation, Use And Maintenance Manual

10

GAS FEEDING LINE

• The gas train must be connected to the gas

attachment 1)(A), using the flange 2), gasket
3) and screws 4) supplied with the burner.

• The gas train can enter the burner from the

right or left side, depending on which is the
most convenient, see fig. (A).

• The gas solenoids must be as close as possi-

ble to the burner, to ensure that the gas
reaches the combustion head within the safety
time of 3s.

GAS TRAIN (B)

Approved, together with the burner, according to
the regulation EN 676, and supplied separately
from the burner, with the code indicated in the
tables (C). It is possible to use the one-stage
gas train of table (C) up to a power of 550 kW,
limiting the ignition output according to the
standard, with the aid of only the brake, as spec-
ified on page 12.

KEY TO LAY-OUT (B)

1 - Gas input pipe
2 - Manual valve
3 - Vibration damping joint
4 - Pressure gauge with pushbutton cock
5 - Multibloc, including:

- filter (replaceable)
- one-stage or two-stage working valve
- pressure adjuster

6 - Minimum gas pressure switch
7 - Valve seal checking device.

In accordance with the standard EN 676,
gas valve leak detection control devices
are compulsory for burners with maximum
outputs of more than 1200 kW. 

8 - Gasket
9 - Gas train/burner adaptor

P1 - Pressure at combustion head
P2 - Up-line pressure of valves/adjuster

L - Gas train supplied separately with the code

indicated in tables (C)

L1 - The responsibility of the installer

KEY TO LAY-OUT FOR TABELS (C)

C.T.= Checking device for gas valves seal:

- = Gas train without gas valve leak

detection control device; device that
can be ordered separately and
assembled subsequently (see Col-
umn 7).



= Train with seal checking device

already assembled.



= With this train the integrated leak

detection cannot be activated.

7

= VPS valve leak detection control device.

Supplied separately from gas train on
request.

9

= Gas train/burner adaptor.

Supplied separately from gas train on
request.

Note

See the accompanying instructions for the
adjustment of the gas train.

(A)

(B)

D3839

D8066

5

P2

P1

1 0

8

1

2

3

4

1 1

9

6

7

L 1

L

BURNERS AND RELATIVE GAS TRAINS APPROVED ACCORDING TO EN 676 

*

Trains complete with 6-pin plug for connection to burner.

 GAS TRAINS L (One-stage)

BURNER

7

9

Code

Model Ø

C.T.

RS 

34/1

RS 

44/1

Code

Code

3970602

MBC 120

3/4”



•

-

-

3000824

 3970553

 3970229

*

MB-DLE 407 S20

3/4”

-

•

-

3010123

3000824

3970599

MB-DLE 407 S52

3/4”

-

-

•

3010123

3000824

 3970554

 3970230

*

MB-DLE 410 S20

1”

-

•

•

3010123

3000824

3970258

MB-DLE 410 S52

1”1/4

•

3010123

3000824

 3970144

 3970231

*

MB-DLE 412 S20

1”1/4

-

•

•

3010123

-

 3970180

 3970232

*

MB-DLE 415 S20

1”1/2

-

•

•

3010123

-

 3970181

 3970233

*

 3970182

 3970234

*

MB-DLE 420 S20

2”

-
-




•

•

3010123
3010123

-
-

3000822

 GAS TRAINS L (Two-stage)

BURNER

7

9

Code

Model

Ø

C.T.

RS 

34/1

RS 

44/1

Code

Code

 3970046 MB-ZRDLE 407 S20

3/4”

-

•

-

3010123 3000824

 3970079 MB-ZRDLE 410 S20

1”

-

•

•

3010123 3000824

 3970152 MB-ZRDLE 412 S20

1”1/4

-

•

•

3010123

-

 3970183 MB-ZRDLE 415 S20

1”1/2

-

•

•

3010123

-

 3970184
 3970185

MB-ZRDLE 420 S20

2”

-



•
•

•
•

3010123

-

-

3000822

(C)