Riello 519T80 Guida rapida

2915859 (3) - 02/2010

Installation, use and maintenance instructions

Forced draught gas burner

Code Model Type

3751982 GAS 3 519T80

DECLARATION

Declaration of conformity in accordance with ISO / IEC 17050-1

Manufacturer: RIELLO S.p.A.

Address: Via Pilade Riello, 7

37045 Legnago (VR)

Product: Forced draught gas burner

Model: GAS 3

These products are in compliance with the following Technical Standards:

EN 676

EN 292

and according to the European Directives:

MD 98/37/EEC - 2006/42/EC Machine Directive

LVD 73/23/EEC - 2006/95/EC Low Voltage Directive

EMC 89/336/EEC - 2004/108/EC Electromagnetic Compatibility

The quality is guaranteed by a quality and management system certified in accordance with UNI EN ISO

9001.

Legnago, 22.02.2010 Mr. G. Conticini

Burners Division Department

RIELLO S.p.A.

5859

TECHNICAL DATA

BURNER DESCRIPTION

OVERALL DIMENSIONS

Thermal output 130 - 340 kW - 112,000 - 292,000 kcal/h

Fuel Natural gas Pci 8 - 10 kWh/m3= 7000 - 8600 kcal/m3

Minimum gas pressure For maximum output 11,1 mbar are needed measured at the coupling with

nil pressure in the combustion chamber and gas with calorific value of

8600 kcal/m3

Maximum gas pressure 150 mbar

Electrical supply Single phase 220 V + 10% - 10% ~ 60Hz

Motor 1.85A / 220V

Capacitor 6.3 µF

Ignition transformer Primary: 1.8A / 220V - Secondary: 1 x 8 kV - 30 mA

Absorbed electrical power 0.4 kW

1– Air shutter control

2– Air shutter lock-nut

3– Wiring terminal block

4– Fair leads

5– Control box re-set button

6– Air pressure switch

7– Gas pressure test-point

Fig. 1

S7495

Boiler front-plate

drilling Burner

160

155 M10

D1785

410 610185

*320

397

292

165

ø 140

Rp 1 1/2

S7497 S7498

*Length available with special blast tube to be separately required.

5859 2

STANDARD EQUIPMENT

ACCESSORIES

• RADIO DISTURBANCE PROTECTION KIT code 3010386

If the burner is installed in places particularly subject to radio disturbance (emission of signals exceeding 10

V/m) owing to the presence of an INVERTER, or in applications where the length of the thermostat

connections exceeds 20 metres, a protection kit is available as an interface between the control box and the

burner.

FIXING TO THE BOILER

GAS SUPPLY

Quantity Description

1Flange

1Gasket

8 Screws

1 Flange gasket

Separate the combustion head from the

burner body by loosening the screws 1)

and 2) and withdrawing the group A) from

the holding bars 3).

Fix the group B) to the boiler front plate 4)

using the gasket 5) provided as acces-

sory.

23 5 4

S7499

1- Gas pipe line 6- Minimal gas pressure switch

2- Cock valve 7- Gas shut off valve

3- Filter 8- Burner

4- Pressure stabilizer 9- Gas safety shut off valve

5- Pressure test-point 10 - Isolator joint

43102 1

S7500

5859

WORKING RANGE

COMBUSTION CHAMBER PRESSURE - MAXIMUM OUTPUT (in compliance with DIN 4788)

MINIMUM GAS PRESSURE - OUTPUT

Pressure: detected at the pressure test-point 7) (fig. 1) with nil mbar into the combustion chamber.

Should the combustion chamber be pressurized, the pressure necessary will be that of the

graph plus the pressurization value.

Example: to obtain 270 kW it is necessary a gas pressure of 8 mbar and the combustion head set as

indicated at page 7.

If the combustion chamber is pressurized at 2 mbar, the pressure detected at the test-point

7) is: 8 + 2 = 10 mbar.

If this value is too high, for very low gas pipework pressures, the gas gear 6) (page 7) could

be more open.

Do not decrease the pressure at the coupling under the values shown in the diagram.

Output: the maximum value is obtainable with gas Pci 8600 kcal/m3.

CORRELATION BETWEEN GAS PRESSURE AND BURNER OUTPUT

kcal/h

mbar

D1788

kcal/h

mbar

D1789

5859 4

BURNER ELECTRICAL WIRING

(carried out in the factory)

ATTENTION

In the case of phase-phase feed, a bridge must be fitted on the control box terminal board between terminal 6

and the earth terminal.

CCapacitor

F1 Protection against radio interference

K1 Relay

MB Burner terminal strip

MV Fan motor

PA Air pressure switch

RMG Control box

SO Ionisation probe

TA Ignition transformer

TB Burner earth

D2563

5859

ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BLOCK

(to be carried out by the installer)

Notice

- Leads minimal section 1 mm2.

- TheelectricwiringcarriedoutbytheinstallermustbeincompliancewiththerulesinforceintheCountry.

FIXING OF THE ELECTRICAL WIRES

All the electrical wires, which are to be connected to the

terminal block 3) (fig. 1) shall pass through the fair leads 4)

(fig. 1) as for this scheme.

1- Single phase supply : fair lead Pg 13.5

2- Adjustment thermostat : fair lead Pg 13.5

3- Safety thermostat : fair lead Pg 13.5

4- Gas train : fair lead Pg 13.5,

sheath ø 13

5 / 6 / 7 /8 - Pre-sheared holes

Further prospective signals or controls can be connected to the burner wiring terminal board by removing

the metal weldnuts from the pre-sheared holes and inserting a commun fair lead for the passage and the

clamping of the leads.

NOTES

- Do not exchange the neutral wire with the phase (avoid the plug-pin connection).

- Carry out a safe earth connection.

- Check the stop of the burner, by opening the boiler thermostat and the burner lock-out, by disconnecting

the lead from the flame probe.

WARNING

When closing the burner on its slide-bars, pull towards the outside the high voltage cable and the cable

of the flame detection probe, till to little tension.

D2658

HRemote lock-out signal

PG Minimum gas pressure switch

TB Burner earth

TL Limit control device system

TS Safety control device system

VS Gas safety shut off valve

V1 Gas shut off valve

S7505

5859 6

BURNER START-UP CYCLE

Air-purge: loosen the screw placed on the minimal gas pressure switch mounted on the gas train

AIR PRESSURE SWITCH

The air pressure switch setting shall be carried out after having

set all other adjustments of the burner and the air pressure

switch shall be at its lowest set-point.

When the burner is operating, increase the adjustment pressure

by turning - slowly - clockwise the knob till reaching the burner

lock-out.

Thereafter, turn the knob anticlockwise for 1 mbar and repeat the

burner start-up for checking the regularity: if lock-out intervenes

turn the knob anticlockwise for 0.5 mbar.

CAUTION:

do not turn the ionization probe, maintain the drawing position; should it be close to the ignition elec-

trode, damage may occur to the control box amplifier.

Screw

Plug for pressure measure

Pressure switch

S7506

1 ÷ 10

mbar

Adjustment knob

S7507

0 - 1 mm

2 - 4 mm

Probe position Ignition electrode position

S7508

5859

COMBUSTION HEAD ADJUSTMENT

Two separate adjustments have to be made: air and gas.

These adjustments can be carried out when the burner is still open, during the installation (see

page 2 - Fixing to the boiler).

Air setting

Loosen the two screws 1) and move the internal

part of the combustion head 2) so that its rear

edge 3) is coincident with the desired set-point

on the plate 4). Tighten the screws 1).

Gas setting

Loosen the screw 5), move the ring 6) so that

the pointer 7) is coincident with the desired set-

point 8). Tighten the screw 5).

Attention:

the set-point number is the same for air and gas

setting and is given by the following diagram.

Example:

the burner is installed on a boiler of 225 kW, assuming an efficiency of 90% the burner output should

be 250 kW. From the diagram it can be seen that the air and gas settings for this rating should be no. 4.

256

1347 S7509

kcal/h kW

Burner output

Set-point number = for air and gas

D1793

5859 8

COMBUSTION CHECKS

CO2

It is advisable to not exceed 10% of CO2(gas with calorific value of 8600 kcal/m3), in order to avoid

the risk that small changes of the adjustments due, for instance, at draught variation, may cause com-

bustion with insufficient air and consequently formation of CO.

For safety reason the value of 0.1% (one thousand p.p.m.) must not be exceeded.

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 a measurement of the ionization current is required, it is necessary to disconnect the

probe lead and insert a d.c. microamperometer.

BURNER START-UP

If during operation the flame shuts off, lock-out occurs within 1 sec.

Lead Probe

S7511

Normal Lock-out because no ignition

Thermostat

Motor

Ignition transf.

Start valve

Adjust. valve

Lock-out

2 s 40 s 10 s 2 s 40 s 3 s max.

D1798

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