Riello G3MC Quick start guide

20013749 (2) - 10/2009
Installation, use and maintenance instructions
安装 , 使用以及维护说明书
Light oil burner
轻油燃烧器
轻油燃烧器轻油燃烧器
轻油燃烧器
CODE - 编码
编码编码
编码 MODEL - 型号
型号型号
型号 TYPE - 类型
类型类型
类型
20013629 G3MC 448T1
GB
CN
One stage operation
一段火运行

20013749
GB
INFORMATION ABOUT THE INSTRUCTION MANUAL
INTRODUCTION
The instruction manual supplied with the burner:
- is an integral and essential part of the product and must not be sepa-
rated from it; it must therefore be kept carefully for any necessary
consultation and must accompany the burner even if it is transferred
to another owner or user, or to another system. If the manual is lost or
damaged, another copy must be requested from the Technical Assist-
ance Service of the area;
- is designed for use by qualified personnel;
- offers important indications and instructions relating to the installation
safety, start-up, use and maintenance of the burner.
DELIVERY OF THE SYSTEM AND THE INSTRUCTION MAN-
UAL
When the system is delivered, it is important that:
- The instruction manual is supplied to the user by the system manu-
facturer, with the recommendation to keep it in the room where the
heat generator is to be installed.
- The instruction manual shows:
- the serial number of the burner;
- the address and telephone number of the nearest Assistance
Centre;
- The system supplier carefully informs the user about:
- the use of the system,
- any further tests that may be necessary before the system is
started up,
- maintenance and the need to have the system checked at least
once a year by the manufacturer or another specialised techni-
cian.
To ensure a periodic check, recommends the drawing up
of a Maintenance Contract.
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1 20013749
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TECHNICAL DATA
BURNER DESCRIPTION
One stage light oil burner.
BURNER EQUIPMENT
Flexible pipes with nipples . . . . . . . . . No. 2 Cover . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Screws and nuts for flange. . . . . . . . . No. 4 Insulating gasket . . . . . . . . . . . . . . . . No. 3
Screw with two nuts for flange . . . . . . No. 1
TYPE 448T1
Thermal power – output 19 – 35 kW – 1.6 – 3 kg/h
Fuel Light oil, viscosity 4 – 6 mm2/s at 20 °C (1.5 °E)
Electrical supply Single phase, 230V ±10% ~50Hz
Motor Run current 0.7A – 2850 rpm – 298 rad/s
Capacitor 4 µF
Ignition transformer Secondary 8 kV – 16 mA
Pump Pressure 7 – 15 bar
Absorbed electrical power 0.115 kW
1– Lock-out lamp and reset button
2– Motor
3– Capacitor
4– Air damper assembly
5– Hydraulic jack
6– Combustion head
7 – Combustion head adjustment screw
8 – Vacuum gauge connection
9 – Return line
10 – Suction line
11 – Oil pump
Fig. 1
8
D4672 9102
71
3
4
5
6
11

20013749 2
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FIRING RATE
OVERALL DIMENSIONS
MOUNTING THE BURNER
0.8
0
0.2
0.4
Pressure in the combustion
chamber – mbar
1.5 2 2.5 3 Light oil output - kg/h
20 25 30 35 Thermal power - kW
D5223
0.6
Flange Burner
125 110 194
130
26
45°
ø89
213
11
162
D4673
180
75 72
150
45°
125
It is necessary that the insulating gasket
is placed between the boiler door and the
burner flange.
This insulating gasket has six holes,
which, if necessary, can be modified as
shown on the drawing on the right.
Verify that the installed
burner is lightly leaned
towards the button.
(See figure 2).
D5242
D5218
Fig. 2
BURNER FIXING
S7387

3 20013749
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HYDRAULIC SYSTEM
Warning: before starting the burner make sure that the return pipe-line is not clogged: any
obstruction would cause the pump seals to break.
The pump vacuum should not exceed
a maximum of 0.4 bar (30 cm Hg).
Beyond this limit gas is released from
the oil.
Oil lines must be completely air-
tight. The return line should termi-
nate in the oil tank at the same level
as the suction line; in this case a
non-return valve is not required.
When the return line arrives over the
fuel level, a non-return valve must be
used.
This solution however is less safe than
previous one, due to the possibility of
leakage of the valve.
PRIMING THE PUMP
Start the burner and wait for the prim-
ing. Should lock-out occur prior to the
arrival of the fuel, await at least 20 sec-
onds before repeating the operation.
A filter must be installed on the suction fuel line.
H
meters
L meters
I. D.
8 mm I.D. 10 mm
0.5
1
1.5
2
10
20
40
60
20
40
80
100
WARNING
The pump is supplied for use with a two pipe system.
For use on a one pipe system, it is necessary to remove
the by-pass screw (A, fig. 3).
A
H
meters
L meters
I. D.
8 mm I.D. 10 mm
0
0.5
1
1.5
2
3
3.5
35
30
25
20
15
8
6
100
100
100
90
70
30
20
H max. 4 m
H
H
max. 4 m
min. 0.1 m
D5219
D5220
D5199
H=Difference of level.
L= Max. length of the
suction line.
I.D.=Internal diameter of the
oil pipes.
PRIMING THE PUMP
Loosen the plug of the vacuum gauge (5, fig. 1,
page 1) and wait until the fuel flows out.
Fig. 3

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ELECTRICAL WIRING
NOTES:
–Do not exchange the neutral with the phase.
– Wires of min. 1 mm2section. (Unless requested otherwise by local
standards and legislation).
– The electrical wiring carried out by the installer must be in compliance
with the rules in force in the Country.
CONTROL BOX, (see fig. 4)
To remove the control box (1) from the burner:
®Unscrew the fissing screws on the burner cover and remove it.
®Unscrew the fissing screws (2) on the plate and remove the control
box (1).
®Screw the two fissing screws (2) and reassemble the burner cover.
®Fix the control box (1) with plate far from the burner.
TESTING
Check the shut-down of the burner by opening the thermostats.
Fig. 4 2
1
D4677
Key to lay-out
A- Control box 530SE
C- Capacitor
E- Electrode
F- Fuse
FR - P.E. Cell
H- Lock-out signal
I- Main switch
M- Motor
PE - Burner-earth
TL - Limit thermostat
TS - Safety thermostat
XP.. - Pin plug
Y- Oil valve

5 20013749
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COMBUSTION ADJUSTMENT
In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjust-
ment and testing must be carried out observing the instruction manual of the boiler, including verifi-
cation of the CO and CO2concentration in the flue gases, their temperatures and the average
temperature of the water in the boiler.
To suit the required appliance output, fit the nozzle then adjust the pump pressure, the setting of
the combustion head and the air damper opening in accordance with the following schedule.
The values shown in the table are measured on a CEN boiler (as per EN 267).
They refer to 12.5% CO2at sea level and with light oil and room temperature of 20 °C .
NOZZLES RECOMMENDED: Monarch type R - NS; Delavan type W - A - E;
Steinen type H - Q ; Danfoss type H - B.
Angle: 60°: in most cases.
80°: in case of flame detachment, during ignitions at low tem-
peratures.
PUMP PRESSURE 12 bar : the pump leaves the factory set at this value
14 bar : improves flame retention; it is therefore suitable for ignitions
at low temperatures.
COMBUSTION HEAD SETTING:
Nozzle Pump pressure Burner output Comb. head
adjustment Air damper adjustment
GPH Angle bar kg/h ± 4% Set-point Set-point
0.40 80° 12 1.6 0 2.4
0.50 60°/80° 12 2.0 1 3.1
0.60 60°/80° 12 2.4 2 3.6
0.65 60°/80° 12 2.6 3 3.8
0.75 60° 12 3.0 4 4.0
SETTING CARRIED OUT IN THE FACTORY
0.65 60°W 12 2.6 2 2.1
1
2
3
4
1
2
3
This is done when fitting the nozzle, with the
blast tube removed.
It depends on the output of the burner and is
carried out by rotating the regulating rod, till the
terminal plane of the blast tube is level with the
set-point, as indicated in the schedule.
In the sketch on the left, the combustion head
is set for an output of 0.60 GPH at 12 bar,
while the shutter is level with set-point 2, as
required by the above schedule.
2
Blast tube
Regulating rod
Shutter
Terminal plane of the blast tube
D5322
135
Fig. 5

20013749 6
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Combustion head settings indicated in the table are valid
for most cases.
The setting of the fan output according to the installation
should normally be done only through the air damper.
Should one subsequently want to retouch also the set-
ting of the combustion head, with the burner running,
operate on the rod (1, fig. 6) with a 6 mm spanner (2, fig.
6) as follows:
Turn to the right: (sign +), in order to increase the vol-
ume of air entering the combustion chamber and thus
diminishing its pressure.
There is a reduction of CO2and the adhesion of the
flame to the air diffuser disc improves.
(Setting advisable for ignitions at low temperatures).
Turn to the left: (sign –), in order to reduce the volume
of air entering the combustion chamber and thus increasing its pressure. The CO2improves and
the adhesion of the flame to the diffuser tends to reduce. (This setting is not advisable for ignitions
at low temperatures).
In any case do not bring the combustion head setting more than one point away from that indicated
in the schedule. One set-point corresponds to 3 turns of the rod; a hole (3, fig. 6) at its end facili-
tates counting the number of turns.
AIR DAMPER ADJUSTMENT, (see fig. 7)
The mobile air damper (A) operated by the jack (B) as-
sures the complete opening of the air intake.
The regulation of the air-rate is made by adjusting the
fixed air damper (C), after loosing the screws (D).
When the optimal regulation is reached, screw tight the
screws (D) to assure a free movement of the mobile air
damper (A).
The settings indicated in the schedule refer to the burner
with its metal cover fitted and the combustion chamber
with “zero” depression.
These regulations are purely indicative.
Each installation however, has its own unpredictable
working conditions: actual nozzle output; positive or neg-
ative pressure in the combustion-chamber, the need of
excess air, etc.
All these conditions may require a different air-damper
setting.
It is important to take account of the fact that the air output of the fan differs according to
whether the burner has its metal cover fitted or not.
Therefore we recommended to proceed as follows:
– adjust the air damper as indicated in the table;
– mount the cover, simply by means of the upper screw;
– check smoke number;
– should it become necessary to modify the air output, remove the cover by loosening the screw,
adjust the air damper, remount the cover and finally recheck the smoke number.
1
23
6
D5323
Fig. 6
D
C
D5786
D
A
B
Fig. 7
4

7 20013749
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ELECTRODE SETTING
START-UP CYCLE
ADJUSTMENTS, TO AVOID FLAME - DETACHMENT, AT BURNER IGNITION
This inconvenience can occur, when the temperature of the light oil decreases below +8 °C.
1) CORRECT POSITIONING OF THE ELECTRODES, (see fig. 8).
2) NOZZLE: ATOMIZING CONE
Choose empt ies or semi-empt ies cones.
For exemple: Delavan type A - E; Steinen type H; Danfoss type H.
3) PUMP - SETTING
The pump is factory set, at a pressure of 12 bar.
When the temperature of the gas-oil decreases below +8 °C, increase the pressure to 14 bar.
4) COMBUSTION-HEAD SETTING
Regulate the combustion-head one set-point further ahead than indicated in the instructions.
Example: the instructions require to set the combustion-head on set-point 2.
Instead, the setting is made on set-point 3.
5) FAN - AIR DAMPER ADJUSTMENT
Adjust the damper, reducing the excess air until the Bacharach number is not near 1.
(i.e. a combustion with the lowest possible excess-air).
IMPORTANT:
THESE DIMENSIONS MUST BE
OBSERVED
Attention:
Before assembling or removing the
nozzle, loosen the screw (A) and
move the electrodes ahead
2 – 2.5 mm
4± 0.3 mm
D5230 A
Fig. 8
Normal Lock-out, due to light-failure
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp ~12s D5229
~12s ~5s

20013749 8
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MAINTENANCE
The burner requires periodic maintenance carried out by a qualified and authorised technician in con-
formity with legislation and local standards.
Periodic maintenance is essential for the reliability of the burner, avoiding the excessive consump-
tion of fuel and consequent pollution.
Before carrying out any cleaning or control always first switch off the electrical supply to
the burner acting on the main switch of the system.
THE BASIC CHECKS ARE:
®Check there are no occlusions or obstructions in the inlet or return pipes, in the air suction areas and
in the combustion product waste pipe.
®Clean the filter in the oil suction line and in the pump.
®Check for correct fuel consumption.
®Check that the burner electrical connections are correct.
®Replace the nozzle and check the correct position of electrodes.
®Clean the combustion head in the fuel exit area.
®Check that the positioning of the combustion head is correct and that it is properly fixed to the
boiler.
®Check that the air damper is positioned correctly.
Let the burner run at full capacity for about ten minutes, setting all the elements correctly as explained in
this manual. Then carry out the analysis of the combustion by checking:
- Smoke index as per the Bacharach scale; - CO2percentage (%); - CO content (ppm);
- NOx content (ppm); - Smoke temperature at the chimney.