Riello PRESS GV Series User manual

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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.
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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.
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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.
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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
U1
U2
P
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
V1
U1
P
Fuel Supply
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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
7
10
9 5 V
P
+H
-H
8
1
4
10 cm
2
5
73
9
6
6
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.
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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
L
D
Burner output (MW)
Flame lenght (m) Flame diameter (m)
0
1
1
2
00
0,5
1
0,5
Lmax
L
min
D
max
D
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)
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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
ON
OFF
time
time
ON
OFF
“One stage” operation
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COMPUTER
or
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.
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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°
0
TL
M
time (s)
1
0
25
25
30
2
2
3
PRESS G24
0
TL
M
1°
time (s)
28
13
30
PRESS GV SeriesOne Stage Light Oil Burners
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