Riello FS5 LME Quick start guide

20039410 (1) - 10/2011

Installation, use and maintenance instructions

Forced draught gas burner

CODE MODEL TYPE

20039315 FS5 LME 564T31

One stage operation

20039410 1GB

TECHNICAL DATA

For gas family 3 (LPG) ask for separate kit.

OThe burner meets protection level of IP X0D (IP 40) as EN 60529.

OBurner in compliance with EC Directives: CEM 2004/108/EC, Low Voltage 2006/95/EC.

OGas train according to EN 676.

NOTE

The grommet (3) and the hood fixing screw (4), supplied as accessories, should be assembled on

the same side as the gas train.

TYPE 564T31

Thermal power 18 – 58 kW – 15,500 ÷50,000 kcal/h

Natural gas

(Family 2) Pci 8 – 12 kWh/Nm3– 7.000 ÷10.340 kcal/Nm3

Pressure min. 10 mbar – max. 40 mbar

Electrical supply Single phase, 230V ± 10% ~50Hz/60Hz

Motor 0.75 A run current - 2800 rpm. - 294 rad/s

Capacitor 2 µF

Ignition transformer primary 230V / 0.2A – secondary 8 kV

Absorbed electrical power 0.15 kW

COUNTRY DE DK - AT - GR - SE GB - IE LU - PL NL

GAS CATEGORY II2ELL3B/P II2H3B/P II2H3P II2E3B/P II2L3B/P

1 – Air dampers

2 – Damper fixing screws

3 –Grommet

4 – Hood fixing screw

5 – Air pressure switch

6 –Motor

7 – Lockout light with

reset button

8 – Control box

9 – 6 pole socket for gas train

10 – Capacitor

11 – 7 pole socket

D12069

510 6

Fig. 1

20039410 2GB

DIMENSIONS

BURNER EQUIPMENT

ACCESSORIES

SOFTWARE DIAGNOSTIC KIT

A special kit is available that, by an optical link to a PC, shows the burner life together with oper-

ating hours, type and number of lockout, serial number, etc...

Do the following to display the diagnostic:

Connect the kit supplied separately to the appropriate socket on the control box.

The information is read after the software program in the kit is booted.

RESET KIT

The use of a connection available as an accessory is provided for remote resetting of the control

box.

Flange Burner

272 100 295

ø 170

130 28 48

45°

ø 91

233

140

Rp 1/2

180

138

*125

D5066

Long combustion head upon request

Quantity Description

Screws with nuts

Insulating gasket

Screws for fixing the fairing

Grommet

Hinge

7 pin plug

20039410 3GB

BOILER FIXING

FIRING RATE

TEST BOILER

The firing rate has been defined according to EN 676 standard.

COMMERCIAL BOILERS

The burner-boiler matching is assured if the boiler conforms to EN 303 and the combustion chamber

dimensions are similar to those shown in the diagram EN 676.

For applications where the boiler does not conform to EN 303, or where the combustion chamber

is much smaller than the dimensions given in EN 676, please consult the manufacturers.

Separate the combustion head from the burner body

by removing the nut (1) and pulling back the group (A).

Fix the group (B) to the boiler plate (2), inserting the

supplied insulating gasket (3).

132

D5067

HINGE ASSEMBLY

S7392

Pressure in combustion

chamber – mbar

Thermal power

D5135

0.8

0.2

0.4

0.6

20,000 30,000 40,000 50,000 kcal/h

1.0

15,000

20 4030 50 60 kW16

20039410 4GB

CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT

To obtain the maximum output, it is necessary to have 4.6 mbar measured on the pipe coupling,

with the combustion chamber at 0 mbar and gas G20 - Pci = 10 kWh/Nm3(8,570 kcal/Nm3).

GAS FEEDING LINE

The gas train is supplied separately, for its adjustment see the enclosed instructions.

Gas pressure at combustion

head in mbar

Thermal power

D5136

20,000 30,000 40,000 50,000 kcal/h

20 4030 50 60 kW16

15,000

GAS TRAIN ACCORDING TO EN 676

MULTIBLOC CODICE

CONNECTIONS

USE

TRAIN BURNER

MBC 65 DLE 3970569 Rp 1/2 Rp 1/2 Natural gas and LPG

MBDLE 405 B01 3970530 Rp 1/2 Rp 1/2 Natural gas and LPG

1– Gas arrival pipe

2– Manual cock (supplied by the installer)

3– Gas pressure gauge (supplied by the installer)

4– Filter

5– Gas pressure switch

6– Safety valve

7– Pressure governor

8– Adjustment valve

M1 – Gas-supply pressure test point

M2 – Pressure coupling test point

D5069

2 3 M1 4 5 6 7 8

D7279

678

MBC 65 DLE

20039410 5GB

ELECTRICAL WIRING

All the installation, maintenance and disassembly operations must be carried out with the

electricity supply disconnected.

The burner requires periodic maintenance carried out by a qualified and authorised technician

in conformity with legislation and local standards.

ATTENTION:

Do not swap neutral and phase over, follow the diagram shown carefully and carry out a

good earth connection.

The section of the conductors must be at least 1 mm2. (Unless requested otherwise by local stand-

ards and legislation).

The electrical wiring carried out by the installer must be in compliance with the rules in force in the

country.

Verify that the burner stops by operating the boiler control thermostats and that the burner locks out

by separating the red ionisation probe lead connector.

NOTES

The burners have been type-approved for intermittent operation. This means they must stop at least

once every 24 hours in order to allow the electrical control box to check its efficiency on start-up.

The boiler limit thermostat (TL) normally ensures the burner halts. If this does not happen a time switch

(IN) halting the burner at least once every 24 hours must be applied in series to limit thermostat (TL).

STANDARD ELECTRICAL WIRING (see page 13).

ELECTRICAL WIRING WITH GAS LEAK CONTROL DEVICE (DUNGS VPS 504)

WARNING

DANGER

KEY TO LAY-OUT

X6 - 6 pin plug

X7 - 7 pin plug

B4 - Working signal

h1 - Hour counter

PG - Minimum gas pressure switch

S3 - Remote lock-out signal

(230V - 0.5 A max.)

T6A-Fuse

TL - Limit thermostat

TS - Safety thermostat

V10- Safety valve

V11- Adjustment valve

230V

50Hz

D4199

TO BE DONE BY

THE INSTALLER

20039410 6GB

COMBUSTION HEAD ADJUSTMENT

Loosen the screw (A), move the elbow (B) so that

the rear plate of the coupling (C) coincides with the

set point.

Tighten the screw (A).

Example:

The burner is installed in a 40 kW boiler.

Considering efficiency of 90% the burner must

supply around 44 kW.

The diagram shows that for this

output the adjustment must be

made on notch 3.

The diagram is to be used only

for initial settings, to improve air

pressure switch operation or

improve combustion, it may be

necessary to reduce this setting

(set point toward position 0).

AIR DAMPER ADJUSTMENT

The regulation of the air-rate is made by adjusting the air damper

(1), after loosing the screws (2).

When the optimal regulation is reached, screw tight the screws

(2).

S7015

Set point

02134

40,000

50,000

30,000

20,000

10,000

kcal/h kW D5137

60,000

D5231

20039410 7GB

COMBUSTION ADJUSTMENT

In conformity with Efficiency Directive 92/42/EEC, the application of the burner on the boiler,

adjustment and testing must be carried out by observing the instruction manual of the boiler,

including verification of the CO and CO2concentration in the flue gases, their temperatures and

the average temperature of the water in the boiler. It is advisable to set the burner according to

the type of gas used and following the indications of the table:

PROBE - ELECTRODE POSITIONING

IMPORTANT

Do not turn the starting electrode but leave it as shown in the drawing; if the starting electrode is put

near the ionization probe, the amplifier of the control box might be damaged.

IONIZATION CURRENT

The minimum current necessary for the control box operation is 3 µA.

The burner normally supplies a higher current value, so that no check is needed. However, if you want to meas-

ure the ionization current, you must open the connector fitted to the red wire and insert a microammeter.

EN 676 AIR EXCESS: max. output λ≤1.2 – min. output λ≤1.3

GAS Theoretical max. CO2

0 % O2

Setting CO2% CO

mg/kWh

NOx

mg/kWh

λ= 1.2 λ= 1.3

G 20 11.7 9.7 9.0 ≤100 ≤170

G 25 11.5 9.5 8.8 ≤100 ≤170

G 30 14.0 11.6 10.7 ≤100 ≤230

G 31 13.7 11.4 10.5 ≤100 ≤230

D5033

Ignition electrode

Diffuser

WARNING 2.5 – 3.5 mm

Probe

Probe Electrode

Put the ceramic

near the diffuser disc

Legend

C- Capacitor 100...470µF; DC 10...25V

ION - Ionization probe

M -Microammeter, Ri max. 5000 Ω

S8270

20039410 8GB

AIR PRESSURE SWITCH

The air pressure switch is set after all other adjustments have been

made. Begin with the switch at the lowest setting. With the burner

function at the required power, turn the knob slowly in a clockwise di-

rection until burner lockout.

Then turn the knob anticlockwise to an extent that is around 20% of

the adjusted value and then check that the burner starts up properly.

If the burner locks out again turn the knob slightly in an anticlockwise

direction.

Attention:

In conformity with the standard, the air pressure switch must prevent

the air pressure falling below 80% of the adjusted value and the CO

in the flue gases exceeding 1% (10,000 ppm). To check this, insert a

combustion analyser in the flue, slowly reduce the burner air setting

(for example with a piece of cardboard) and verify that the burner

locks out before the CO value in the flue gases exceeds 1%.

BURNER START-UP CYCLE

When flame-failure occurs during working, shut down takes place within one second.

D7404

S8271

AL - Error message (alarm)

BV - Fuel valve

FS - Flame signal

GP - Gas pressure switch

LP - Air pressure switch

LR - Load controller

M- Fan motor

R- Control thermostat / pressurestat

SB -Safetylimiter

W- Limit thermostat / pressure switch

Z- Ignition transformer

AStart command (switching on by «R»)

B-B´ Interval for establishment of flame

COperating position of burner reached

C-D Burner operation (generation of heat)

DControlled shutdown by «R»

Burner will immediately be shut down

Burner control will immediately be ready

for new startup

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