Riello PRESS GV Series Manuel utilisateur

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PRESS GV Series

One Stage Light Oil Burners

PRESS G24 140 ÷ 237 kW

PRESS GV 178 ÷356 kW

LIGHT OIL

TECHNICAL DATA LEAFLET

PRESS GV SeriesOne Stage Light Oil Burners

The PRESS G series of burners covers a firing range from 140 to 356 kW and they have been designed for use in civil

installations of small dimensions or in industrial applications, like incinerators or dyer kilns.

Operation is “One stage”; the burners are fitted with a microprocessor-based burner safety control box which

supplies indication of operation and diagnosis of fault cause. The combustion head, that can be set on the basis

of required output, allows optimal performance ensuring good combustion and reducing fuel consumption.

The main feature of these burners is their reliability due to a simple and strong construction, which permits

operation without particular maintenance intervention.

Simplified maintenance is achieved by the slide bar system, which allows easy access to all of the essential

components of the combustion head. All electrical components are easily accessible only by dismounting a

protection panel, thus guaranteeing a quick and simple intervention on components.

A RIELLO burner (Heat Generator), where it is matched with a water-based boiler (Heater Housing) with a nominal

output

≤

400 kW, providing heat for heating purposes and heat to deliver sanitary hot water, can be installed:

- With boilers (heater housings) already in service in the field, for replacement, in conformity to Article 1,

paragraph 2, point (G) of the EU Regulation No. 813/2013;

- With boilers (heater housings) on a new installation, put on the market after 26th of September 2015;

- With all new boilers (heater housings), where placed on the market before 26th of September 2015.

Technical Data

Model PRESS G24 PRESS GV

Burner operation mode One stage

Modulation ratio at max. output --

Servomotor type --

run time s--

Heat output

kW 140÷280 178÷356

Mcal/h 120÷241 153÷306

kg/h 14÷24 15÷30

Working temperature °C min./max. 0/40

FUEL/AIR DATA

Light oil

Net calorific

value

kWh/kg 11,86

kcal/kg 10200

Viscosity mm2/s (cSt) 4 ÷ 6 (at 20°C)

Pump type AS 47 AN 67 A

delivery kg/h 31 (12 bar) 67 (12 bar)

Atomised pressure bar 12

Fuel temperature max. °C 50

Fuel pre-heater NO

Fan type Centrifugal with forward curve blades

Air temperature max. °C 60

ELECTRICAL DATA

Electrical supply Ph/Hz/V 1/50/230~(±10%)

Auxiliary electrical supply Ph/Hz/V 1/50/230~(±10%)

Control box type RMO

Total electrical power kW 0,4 0,48

Auxiliary electrical power kW 0,15 0,23

Heaters electrical power kW --

Protection level IP 40

Pump motor electrical power kW --

Rated pump motor current A--

Pump motor start up current A--

Pump motor protection level IP --

Fan motor electrical power kW 0,25

Rated fan motor current A2,1

Fan motor start up current A10

Fan motor protection level IP 40

Ignition trasformer

type

V1 - V2 220V - 1x8 kV

I1 - I2 1,6A - 30 mA 1,8A - 30 mA

Operation Intermittent (at least one stop every 24 h)

EMISSIONS

Sound pressure dBA 73 75,5

Sound power dBA 84 86,5

CO emission mg/kWh < 40

Grade of smoke indicator NO Bacharach < 1

CxHy emission mg/kWh <10 (after the first 20 s.)

NOx emission mg/kWh < 200

APPROVAL

Directive 2009/142/EC - 2014/30/UE - 2014/35 UE

Conforming to EN 267

Certification --

Reference conditions:

Temperature: 20°C - Pressure: 1013,5 mbar - Altitude: 0 m a.s.l. - Noise measured at a distance of 1 meter.

Sound pressure measured in manufacturer’s combustion laboratory, with burner operating on test boiler and at maximum

rated output. The sound power is measured with the “Free Field” method, as per EN 15036, and according to an “Accuracy:

Category 3” measuring accuracy, as set out in EN ISO 3746.

PRESS GV SeriesOne Stage Light Oil Burners

Firing Rates

Useful working field

for choosing the burner

Test conditions

conforming to EN267

Temperature: 20°C

Pressure: 1013,5 mbar

Altitude: 0 m a.s.l.

HYDRAULIC CIRCUIT

The burners are fitted with a self-priming pump and

one (for PRESS GV) or two (for PRESS G24) delivery valves

along the oil line from the pump to the nozzles.

The pump does not need calibrating, as it is set in

the factory at 12 bar; however, pressure level can be

changed if necessary, by adjusting the regulator fitted

on the pump.

The delivery valves control the passage from starting

to operating phase.

For PRESS G24, at the start, after pre-purging phase,

the first delivery valve opens and the fuel is sprayed

out through the first nozzle, igniting when it comes

into contact with the spark; then the second delivery

valve opens and the fuel is sprayed out through both

nozzles.

V2 V1

V P

Example of self-priming pump of

PRESS GV burners

PPump with oil filter and pressure

regulator

V1 1st delivery valve

V2 2nd delivery valve

U1 1st nozzle

U2 2nd nozzle

Hydraulic layout of PRESS G24 burner Hydraulic layout of PRESS GV burner

Fuel Supply

PRESS GV SeriesOne Stage Light Oil Burners

Dimensioning Of The Fuel Supply Lines

The fuel feed must be completed with the safety

devices required by the local norms.

The table shows the choice of piping diameter for

the various burners, depending on the difference in

height between the burner and the tank and their

distance.

MAXIMUM EQUIVALENT LENGTH FOR THE PIPING L[m]

Model PRESS G24-GV

Diameter piping Ø8mm Ø10mm

+H, -H (m) Lmax (m) Lmax (m)

+4,0 63 130

+3,0 55 115

+2,0 48 100

+ 1,5 44 92

+ 1,0 40 85

+0,5 36 78

032 70

-0,5 28 62

-1,0 24 55

-1,5 20 48

-2,0 16 40

-3,0 725

-4,0 -10

9 5 V

-H

10 cm

HDifference in height pump-foot valve

0Internal pipe diameter

PMax. height 10 m

VHeight 4 m

1Burner

2Burner pump

3Filter

4Manual shut off valve

5Suction pipework

6Bottom valve

7Remote controlled rapid manual shut off valve

(compulsory in Italy)

8Type approved shut off solenoid valve

(compulsory in Italy)

9Return pipework

10 Check valve

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.

Ventilation

The ventilation circuit produces low noise levels with high performance

pressure and air output, in spite of the compact dimensions.

The air damper is easy to set; when fitted, it makes no difference to air

delivery.

Combustion Head

For the PRESS G24 - GV series of burners a special kit for increasing combustion

head length is available.

The choice of using it depends on the thickness of the front panel and the

type of boiler.

Depending on the type of generator, check that the penetration of the head

into the combustion chamber is correct.

The internal position of the combustion head can easily be adjusted to the

maximum defined output by adjusting a screw fixed to the flange.

Example of fan air gate valve

indexed selector of PRESS G24

burner

Example of a PRESS GV burner

combustion head

Burner output (MW)

Flame lenght (m)

Flame diameter (m)

0,5

Lmax

min

max

min

Example:

Burner thermal output = 500 kW;

L Combustion Chamber (m) = 1,3 m (medium value);

D Combustion Chamber (m) = 0,45 m (medium value)

SUGGESTED COMBUSTION CHAMBER DIMENSIONS

Length of the combustion chamber (m)

Diameter of the combustion chamber (m)

Burner output (MW)

All PRESS GV series burners are fitted with a new microprocessor control panel for the supervision during

intermittent operation.

For helping the commissioning and maintenance work, there are two main elements:

The lock-out reset button is the central operating element for resetting the burner control and for

activating / deactivating the diagnostic functions.

The multi-color LED is the central indication element for visual diagnosis and interface diagnosis.

Switch

Both elements are located under the transparent cover of lock-out reset button, as showed below.

There are two diagnostic choices, for indication of operation and diagnosis of fault cause:

- visual diagnosis :

PRESS GV SeriesOne Stage Light Oil Burners

Operation

BURNER OPERATION MODE

The burner of PRESS G24 - GV series is one stage

working.

On “one stage” operation, the burner adjusts output

to the requested level, by varying between on-off

phases (see picture A).

Picture A

Output

Checked Variable

bar

°C

OFF

time

OFF

“One stage” operation

COMPUTER

FLUE GAS

ANALYSER

INTERFACE ADAPTER

- interface diagnosis :

by the interface adapter and a PC with

dedicated software or by a predisposed

flue gas analyzer (see paragraph

accessories).

Color code table

Operation status Color code table

Stand-by

Pre-purging

Ignition phase

Flame OK

Poor flame

Undervoltage, built-in fuse

Fault, alarm

Extraneous light

LED off

Indication of operation:

In normal operation, the various status are indicated

in the form of colour codes according to the table

below.

The interface diagnosis (with adapter) can be activated

by pressing the lock-out button for > 3 seconds.

Diagnosis of fault causes:

After lock-out has occurred, the red signal lamp is steady on. In this status, the visual fault diagnosis according

to the error code table can be activated by pressing the lock-out reset button for > 3 seconds. The interface

diagnosis (with adapter) can be activated by pressing again the lock-out button for > 3 seconds.

The flashes of red LED are a signal with this sequence :

(e.g. signal with n° 3 flashes - faulty air pressure monitor)

LED off

3 sec. 3 sec. 3 sec.

Error code table

Possible cause of fault Flash code

No establishment of flame at the end of safety

time :

- faulty or soiled fuel valves

- faulty or soiled flame detector

- poor adjustment of burner, no fuel

- faulty ignition equipment

2 flashes

Faulty air pressure monitor 3 flashes

Extraneous light or simulation of flame on burner start up 4 flashes

Loss of flame during operation :

- faulty or soiled fuel valves

- faulty or soiled flame detector

- poor adjustment of burner

7 flashes

Wiring error or internal fault 10 flashes

START UP CYCLE

0s The burner begins the firing cycle;

The motor starts: pre-purge phase;

Ignition electrode sparks.

13s Delivery valve opens.

28s The spark goes out;

Start up cycle is concluded.

0s The burner begins the firing cycle.

2s The motor starts: pre-purge phase.

3s Ignition electrode sparks.

25s Delivery valve opens.

30s The spark goes out;

start up cycle is concluded.

PRESS GV

1°

time (s)

PRESS G24

1°

time (s)

PRESS GV SeriesOne Stage Light Oil Burners

Ce manuel convient aux modèles suivants

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