Riello Burners RLS 300/E MX Manual de usuario

TS0070UK01

RLS/E-EV MX SERIES

RLS 300/E MX 600/1250 ÷3550 kW

RLS 400/E MX 800/1800 ÷4300 kW

RLS 300/EV MX 600/1250 ÷3550 kW

RLS 400/EV MX 800/1800 ÷4300 kW

RLS/E-EV MX series burners are characterised by a modular monoblock structure that

means all necessary components can be combined in a single unit thus making installation

easier, faster and, above all, more flexible.

The series covers a firing range from 600 to 4300 kW, and they have been designed for

use in hot water boilers, overheated water boilers as well as steamboilers. Operation can

be “two stage progressive” or alternative “modulating” with the installation of a PID logic

regulator. The burner can, therefore, supply with precision the demanded power, guaranteeing

an high efficiency system level and the stability setting, obtaining fuel consumption and

operating costs reduction.

The innovative combustion head, adjustment system ensures perfect movement during

modulation as well as reducing noise and pollutants.

LOW NOx DUAL FUEL BURNERS

TECHNICAL DATA

Approval Fuel / air dataElectrical data

Emissions

600/1250÷3550 800/1800÷4300 600/1250÷3550 800/1800÷4300

516/1075÷3053 688/1548÷3698 516/1075÷3053 688/1548÷3698

50/105÷299 67/151÷362 50/105÷299 67/151÷362

60/125-355 80/180÷430 60/125-355 80/180÷430

70/145-412 93/209÷500 70/145-412 93/209÷500

included in LMV51 included in LMV51 included in LMV52 included in LMV52

6,5 9,5 6,5 9,5

4,5 7,5 4,5 7,5

9,1-15,8 17,5 - 30 9,1-15,8 17,5 - 30

51-86 113 - 195 51-86 113 - 195

83 85 83 85

CE in progress CE in progress -- --

two stages progressive/modulating

1 ÷4

SQM 48 (OIL and GAS)

0/60

11,86

0,82

4-6

TA4

870 (20 bar)

0,71

8,6

0,78

reverse blade fan wheels

3/50/400 (±10%)

1/50/430 (±10%)

1,5

3,7

7xIn

N.A.

230 V - 2 x 5 kW

1,9 A - 35 mA

Intermittent (at least 1 stop every 24 h) or Continuous (at least 1 stop every 72 h)

N.A.

< 10

< 2

< 185

< 10

< 80

90/396 - 89/336 - 73/23 EEC

EN 267 - EN 676

Since the Company is constantly engaged in the production improvement, the aesthetic and dimensional features,

the technical data, the equipment and the accessories can be changed.

This document contains confidential and proprietary information of RIELLO S.p.A. Unless authorised, this information

shall not be divulged, nor duplicated in whole or in part.

Reference conditions: Temperature: 20°C - Pressure: 1000 mbar - Altitude: 100 m a.s.l. - Noise measured at a distance of 1 meter.

RLS 400/E MXRLS 300/E MX RLS 400/EV MXRLS 300/EV MX

type

Mcal/h

°C min./max.

kWh/kg

kg/l

mm2/s (cSt)

kg/h

type

kg/h

bar

max. °C

kWh/Nm3

kg/Nm3

Nm3/h

kWh/Nm3

kg/Nm3

Nm3/h

kWh/Nm3

kg/Nm3

Nm3/h

type

max °C

Ph/Hz/V

type

V1 - V2

I1 - I2

dB (A)

mg/kWh

N°Bacharach

mg/kWh

Model

Burner operation mode

Modulation ratio at max. output

Servomotor

run time

Heat output

Working temperature

net calorific value

Light Oil density

viscosity at 20°C

delivery

Pump delivery

Atomised pressure

Fuel temperature

Fuel pre-heater

net calorific value

G20 density

gas delivery

net calorific value

G25 density

gas delivery

net calorific value

LPG density

gas delivery

Fan

Air temperature

Electrical supply

Auxiliary electrical supply

Control box

Total electrical power

Auxiliary electrical power

Heaters electrical power

Protection level

Pump motor electrical power

Rated pump motor current

Pump motor start up current

Pump motor protection level

Fan motor electrical power

Rated fan motor current

Fan motor start up current

Fan motor protection level

Ignition transformer

Working

Sound pressure

Sound power

CO emission

Light Oil grade of smoke indicator

CxHy emission

NOx emission

G20 CO emission

NOx emission

Directive

Conforming to

Certification

FIRING RATES

Test conditions conforming to EN 676:

Temperature: 20°C

Pressure: 1000 mbar

Altitude: 100 m a.s.l.

120

100

140

180

160

RLS 300/

E-EV

MX RLS 400/

E-EV

hPa (mbar)

mm H

Mcal/h

15001000500 2000 2500 3000 3500 4000 4500

500 1000

1500 2000 2500 3000 3500 4000 4500 5000

Useful working field for choosing the burner

Modulation range

The burners are fitted with a butterfly valve to regulate the fuel, controlled by the main management

module of burner through a high precision

servomotor.

Fuel can be supplied either from the right or

left sides, on the basis of the application

requirements.

A maximum gas pressure switch stops the

burner in case of excess pressure in the fuel

line.

The gas train can be selected to best fit system

requirements depending on the fuel output and

pressure in the supply line.

The gas trains are “Multibloc” and “Composed”

type (assembly of the single components)

without seal control. This function is included

in the burner management module.

GAS TRAIN

FUEL SUPPLY

Gas input pipework

Manual valve

Anti-vibration joint

Pressure gauge with pushbutton cock

Filter

Pressure regulator (vertical)

Minimum gas pressure switch

VS safety solenoid (vertical)

VR regulation solenoid (vertical)

Two settings: - firing output (rapid opening)

- maximum output (slow opening)

Gasket and flange supplied with the burner

Gas adjustment butterfly valve

Burner

Gas train-burner adapter

Maximum gas pressure switch

Combustion head pressure

Pressure downstream from the regulator

Pressure upstream from the filter

Gas train supplied separately, with the code given in the table

Installer’s responsibility

MULTIBLOC gas train type MBC 1200

COMPOSED gas train type MBC 1900-3100-5000

LL1

Example of the RLS/E MX gas adjustment butterfly valve.

15 11

14 6

LL1

321

15 11

14 968

321

COMPOSED

GAS TRAINS

MULTIBLOC

GAS TRAINS

Øo

Øi

Øo

Name

MBC 1200 SE 50

MBC 1900 SE 65 FC

MBC 3100 SE 80 FC

MBC 5000 SE 100 FC

Code

3970221

3970222

3970223

3970224

Ø i

2”

DN 65

DN 80

DN 100

X mm

573

583

633

733

Y mm

161

237

240

350

Z mm

425

430

500

576

Ø o

2”

DN 65

DN 80

DN 100

Example of gas train

“COMPOSED” type

without seal control

Example of gas train

“MULTIBLOC” type

without seal control

Øi

Gas trains are approved by standard EN 676 together with the burner.

The overall dimensions of the gas train depends on how they are constructed. The following table

shows the maximum dimensions of the gas trains that can be fitted to RLS 300-400/E-EV MX burners,

intake and outlet diameters.

The maximum gas pressure of gas train “Multibloc” type is 360 mbar, and that one of gas train

“Composed” type is 500 mbar.

MULTIBLOC guarantees a range of pressure towards the burner from 3 to 60 mbar. For version DN

65 and DN 80 is from 20 to 40 mbar. The range of pressure in the MULTIBLOC with flange can be

modified choosing the stabiliser spring (see gas train accessory).

PRESSURE DROP DIAGRAM

RLS 300/E-EV MX

RLS 400/E-EV MX

The diagrams indicate the minimum pressure drop of the burners with the various gas trains that

can be matched with them; at the value of these pressure drop add the combustion chamber pressure.

The value thus calculated represents the minimum required input pressure to the gas train.

NATURAL GAS

note

Please contact the Riello Burner Technical Office for different pressure levels from those above

indicated and refer to the technical manual for the correct choice of the spring.

MBC 1200 gas train: the minimum operating pressure (*) is higher or equal to 10 mbar.

The gas train has to be installed next to the burner (if needed, only with the adapters listed in

the catalogue) and it has to operate in its own working field.

MBC 1900-3100-5000 gas train: the minimum operating pressure (*) is higher or equal to

15 mbar. The gas train has to be installed next to the burner (if needed, with the adapters listed

in the catalogue) and it has to operate in its own working field.

(*) it is the upstream gas train pressure in full load operation conditions.

Gas train

MBC 1200 SE 50

MBC 1900 SE 65 FC

MBC 3100 SE 80 FC

MBC 5000 SE 100 FC

Code

3970221

3970222

3970223

3970224

Adapter

3000826 ( I )

3010221 ( I )

3010222 ( I )

3970223 ( I )

Seal Control

(*)

Gas train

MBC 1200 SE 50

MBC 1900 SE 65 FC

MBC 3100 SE 80 FC

MBC 5000 SE 100 FC

Code

3970221

3970222

3970223

3970224

Adapter

3000826 ( I )

3010221 ( I )

3010222 ( I )

3970223 ( I )

Seal Control

(*)

(*) The seal control is managed by the control box LMV51/LMV52.

mbar

Combustion head and gas train

Combustion head

Pressure drop

mbar

Combustion head and gas train

Combustion head

Pressure drop

Mcal/h

G25G20

100

120

140

160

180

200

220

240

260

280

MBC SE 1900

MBC SE 3100

MBC SE 1200

3000 35001500 25002000500 1000

kW2500 350030002000 4000500 1000 15000

100

G25G20

MBC SE 5000

Mcal/h

kW2500 350030002000 4000 4500

3000 400035001500 25002000

500 1000 1500

500 1000

100

120

140

100

120

140

160

180

200

MBC SE 1900

MBC SE 3100

MBC SE 1200

MBC SE 5000

0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8

1234510620

50 60 10080 200 400 800 1000600

30 45 61 76 95 122 152

1234567810

20 30 40

1,4

1/2

3/4

1" 1/2

1" 1/4

2" 1/2

PRESSURE DROP (mbar)

PIPE DIAMETER

PIPE LENGTH (m)

output

1 - G20

= 0,62 - G25

1,18 - G31

{

15,34

Figure A

The following diagram enables pressure drop in a pre-existing gas line to be calculated and to select the

correct gas train.

The diagram can also be used to select a new gas line when fuel output and pipe length are known. The

pipe diameter is selected on the basis of the desired pressure drop. The diagram uses methane gas as

reference; if another gas is used, conversion coefficient and a simple formula (on the diagram) transform

the gas output to a methane equivalent (refer to figure A). Please note that the gas train dimensions must

take into account the back pressure of the combustion chamber during operations.

Control of the pressure drop in an existing gas line or selecting a new gas supply line.

The methane output equivalent is determined by the formula fig. A on the diagram and the conversion

coefficient.

Once the equivalent output has been determined on the delivery scale ( ), shown at the top of the

diagram, move vertically downwards until you cross the line that represents the pipe diameter; at this

point, move horizontally to the left until you meet the line that represents the pipe length.

Once this point is established you can verify, by moving vertically downwards, the pipe pressure drop

of on the botton scale below (mbar).

By subtracting this value from the pressure measured on the gas meter, the correct pressure value will

be found for the choice of gas train.

Example: - gas used G25

- gas output 9.51 mc/h

- pressure at the gas meter 20 mbar

- gas line length 15 m

- conversion coefficient 0.62 (see figure A)

- equivalent methane output = 9.51 = 15.34 mc/h

0.62

- once the value of 15.34 has been identified on the output scale ( ), moving vertically downwards you

cross the line that represents 1" 1/4 (the chosen diameter for the piping);

- from this point, move horizontally to the left until you meet the line that represents the length of 15 m

of the piping;

- move vertically downwards to determine a value of 1.4 mbar in the pressure drop botton scale;

- subtract the determined pressure drop from the meter pressure, the correct pressure level will be found

for the choice of gas train;

- correct pressure = ( 20-1.4 ) = 18.6 mbar

SELECTING THE FUEL SUPPLY LINES

HYDRAULIC CIRCUIT

EN 267 > 100 Kg/h (TRD 604, NBN)

The hydraulic circuit of the RLS/E-EV MX series of burners

is characterised by a fuel pump with an independent

motor.

The burners are fitted with two valves (a safety valve

and an operation valve) and an oil filter along the oil

line from the pump to the nozzle.

A pressure regulator on the return circuit from the nozzle

enables the quantity of fuel burnt to be varied.

Two safety valves on the return circuit avoid oil leakage

from the nozzle when the burner is in stand-by and

prepurge phase.

The models are fitted with a maximum pressure switch

on the oil return circuit, and a minimum oil pressure

switch on the oil line from the pump to the nozzle.

The burner is suitable for continuous operation.

Example of the RLS/E-EV MX burner hydraulic circuit

PO min

PO max

VR1

Pump with filter and pressure regulator

Min. oil pressure switch on the delivery circuit

Operating valve

Safety valve on the delivery circuit

Pressure gauge on the delivery circuit

Nozzle pipe

Nozzle

Actuator for opening and closing the nozzle needle

Pressure gauge on the return circuit

Servomotor

Pressure regulator on the return circuit

Max. oil pressure switch on the return circuit

Safety valve on the return circuit

POmax RO

POmin

VR1

The fuel feed must be completed with the safety devices required by the local norms.

The table shows the choice of piping diameter, depending on the difference in height between the

burner and the tank and their distance.

With ring distribution oil systems, the feasible drawings and dimensioning are the responsibility

of specialised engineering studios, who must check compatibility with the requirements and

features of each single installation.

note

Model

Diameter piping

+H, -H (m)

+2,0

+1,5

+1,0

+0,5

-0,5

-1,0

-1,5

-2,0

-3,0

Ø1/2”

Lmax (m)

Ø 3/4”

Lmax (m)

95 V

-H

10 cm 2

MAXIMUM EQUIVALENT LENGTH FOR THE PIPING L[m]

Difference in height pump-foot valve

Internal pipe diameter

Max. height 10 m

Height 4 m

Burner

Burner pump

Filter

Manual shut off valve

Suction pipework

Bottom valve

Remote controlled rapid manual

shut off valve

(compulsory in Italy)

Type approved shut off solenoid valve

(compulsory in Italy)

Return pipework

Check valve

RLS/E-EV MX

SELECTING THE FUEL SUPPLY LINES

The ventilation unit comes with

a sound proofing radial

regulating system.

All the burners in the RLS/E-EV

series are fitted with fans

with reverse curve blades, which give excellent performance

and are fitted in line with the combustion head. The air flow

and sound-deadening materials used in the construction are

designed to reduce sound emissions to the minimum and

guarantee high levels of performance in terms of output and

air pressure.

A high precision servomotor through the main management

module installed on each burner of RLS/E-EV MX series,

controls the air dampers position constantly, guaranteeing

an optimal fuel-air mix.

COMBUSTION HEAD

VENTILATION

The innovative combustion

head adjustment system

ensures perfect movement

during modulation as well as

reducing noise and pollutants.

Simple adjustment of the combustion head allows to adapt

internal geometry of the head to the output of the burner.

The same adjustment servomotor for the air damper also

varies, depending on the required output, the setting of

the combustion head, through a simple lever.

This system guarantees excellent mix on all firing rates

range.

Flame dimensions

Example:

Burner thermal output

= 3500 kW;

flame

(m) = 3,5 m (medium value);

flame

(m) = 1,5 m (medium value).

Burner output (MW)

4 5678 910

Flame length (m)

Flame diameter (m)

0,5

1,5

2,5

3,5

max

min

max

Dmin

Example of a RLS/E MX burner combustion head

Example of a sound proofing radial regulating system

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