Riello G5RT MC Quick start guide

20013744 (4) - 04/2011
Installation, use and maintenance instructions
安装 , 使用以及维护说明书
Light oil burner
轻油燃烧器
CODE - 编码 MODEL - 型号 TYPE - 类型
20013624 G5RT MC 447T2
GB
CN
Three stage operation
三段火运行

20013744
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
Assistance 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 20013744
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TECHNICAL DATA
BURNER DESCRIPTION
BURNER EQUIPMENT
Flexible pipes with nipples. . . . . . . . . . . N. 2 Screws and nuts for flange. . . . . . . . . . . . . . N. 4
Screw with two nuts for flange. . . . . . . . N. 1 Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. 1
Insulating gasket . . . . . . . . . . . . . . . . . . N. 3
TYPE 447T2
Thermal power – output 26 / 35.5 ÷ 66.4 kW – 2.2 / 3 ÷ 5.6 kg/h
Fuel Gas oil, max. viscosity at 20 °C: 6 mm2/s (1.5°E)
Electrical supply Single phase, 230 V ± 10% ~ 50Hz
Motor Run current 0.75 A –2850 rpm – 298 rad/s
Capacitor 4 F
Ignition transformer Secondary 8 kV –16 mA
Pump Pressure: 7 ÷ 15 bar
Absorbed electrical power 0.185 kW
D8390
3
4
6
8
1
2
7
5
123
9
10
Fig. 1
1– Return line
2– Suction line
3– Gauge connection
4– Pressure regulator, 2nd - 3rd stage
5– Vacuum gauge connection
6– Hydraulic jacks with air-damper
7– Combustion head adjustment screw
8– Lock-out lamp and reset button
9 – Regulation pressure, 1st stage
10 – Selector, 1st - 2nd - 3rd stage

20013744 2
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FIRING RATE
DIMENSIONS
BOILER FIXING
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 (Fig. 2).
The burner is designed to allow entry of the
flexible oil-lines on either side of the burner.
Pressure in the combustion
chamber – mbar
0.8
0
0.4
Light oil output - kg/h
40 70 Thermal power - kW
D8791
50 60
0.2
0.6
30
24563
270 122 224
130
=
33
45°
ø80
228
11
175
D4646
=
180
75 72
150
45°
Flange Burner
D5242
Fig. 2
D5572

3 20013744
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HYDRAULIC SYSTEMS
WARNING: before starting the burner make sure that the return pipe-line is not clogged:
any obstruction would cause the pump seals to break.
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
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
airtight. The return line should
terminate in the oil tank at the
same level as the suction line.
In this case a non-return valve is
not required.
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
HH
max. 4 m
D5493
D5376
H
max. 4 m
min.0.1m
D5219
SYSTEMS NOT PERMITTED IN GERMANY
A
WARNING
The pump is supplied for use with a two pipe sys-
tem. For use on a one pipe system, it is necessary
to remove the by-pass screw (A).
Priming the pump
Loosen the plug of the vacuum gauge (5, Fig. 1,
page 1) and wait until the fuel flows out.
SYSTEM NOT
PERMITTED IN ITALY
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 priming. Should lock-out
occur prior to the arrival of the fuel, await at least 20 seconds
before repeating the operation.
A filter must be installed on the suction fuel line.
H= Difference of level; L= Max. length of the suction line; ø i = Internal diameter of the oil pipes.
D5809

20013744 4
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HYDRAULIC CIRCUITS
KEY
S- Pump with filter and pressure regulator (high pressure)
VR1 (NO) -1
st stage oil return valve normally open
VR2 (NO) -2
nd stage oil return valve normally open
VR3 (NC) -3
rd stage oil return valve normally close
AD2 - Air damper hydraulic jack for the 2nd stage
AD3 - Air damper hydraulic jack for the 3rd stage
PR1 -1
st stage oil regulator (low pressure)
PR2 -2
nd- 3rd stage oil regulator (high pressure)
GV -ValveUnit
U1 -1
st-2nd stage nozzle
U2 -3
rd stage nozzle
VR 1
PR2
AD AD
2 3
PR1 GV
VR 2
VR 3
S
U2
U1
D9511

5 20013744
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ELECTRICAL WIRING
E
123 56789
10 11 12
123 123 12
4
123
AB
NL
230V ~ 50Hz
TL
TS
6A
M
1
~
V1 MV2 R
V3
NL
BN BU BK BK WH BU
BU BK
BU BN
GY BK BN
C
FR
I
II
III
D8393 CONTROL BOX
BURNER SWITCH
Fig. 3 230V ~ 50Hz NOTES
Wires of 1 mm2section.
The electrical wiring carried out by the installer
must be in compliance with the rules in force in
the Country.
The cables of the electrodes must be kept
away from the rest of the connections.
KEY (Fig. 3)
C- Capacitor
E-Electrodes
FR -Photocell
M- Motor
R- Heater
S- Selector, 1st -2nd -3rd stage
T-Thermostat
TS - Safety thermostat
V1 -1
st stage valve
V2 -2
nd stage valve
V3 -3
rd stage valve
A-B- Auxiliary clamps
BK -Black
BN -Brown
BU -Blue
GY -Grey
WH -White
WARNING: do not exchange the neutral with the phase.

20013744 6
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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 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.
To suit the required appliance output, fit the nozzle, the settings 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.
(* see Fig. 7, page 8)
NOZZLES RECOMMENDED: Monarch type R Danfoss type S
Delavan type W - E Satronic type S
Steinen type Q
COMBUSTION HEAD SETTING: 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.
For this application, the head should be
fully open (at notch 6).
Nozzle 1* Nozzle 1* + 2*
Stage 1st 2nd 3rd
Nozzle GPH 0.65 0.65 + 0.60
Angle 60° 60°
Pump Pressure bar 10 15 15
Burner output kg/h 2.2 3.0 5.6
Comb. head adjustment Set-point 6
Air damper adjustment Set-point 2.5 3.0 8.0
1
2
3
1
2
135
D5582
Terminal plane of the blast tube
Regulating rod
Shutter
Blast tube
2
Fig. 4

7 20013744
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Combustion head settings indicated in the schedule are
valid for most cases.
The setting of the fan output according to the installa-
tion should normally be done only through the air
damper. Should one subsequently want to retouch also
the setting of the combustion head, with the burner run-
ning, operate on the rod (1) with a 6 mm spanner (2) as
follows:
TURN TO THE RIGHT: (SIGN +)
In order to increase the volume of air entering the com-
bustion 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) at its end facilitates counting the number
of turns.
AIR DAMPER ADJUSTMENT: 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 negative
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 schedule (point 3);
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.
2 3
6
D5587
1
Fig. 5
3

20013744 8
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PUMP PRESSURE AND AIR OUTPUT (Fig. 6)
The burner is provided with an hydraulic device controlled by the economizer which reduces to approx. 70%
the max. output of gas oil and air.
1st STAGE ADJUSTMENT (with selector on Pos. 1)
Adjustment of air shutter:
Unloosen the nut (9) turn the screw (10) until the air shutter (1) reaches the position desired.
Then lock the nut (9).
Pressure regulation:
this is set at 10 bar at the factory.
Should such pressure be reset or changed, just turn the screw (4).
The pressure gauge must be mounted in place of cap (5).
2nd STAGE ADJUSTMENT (with selector on Pos. 2)
Adjustment of air shutter:
Unloosen the nut (2) turn the screw (3) until the air shutter (1) reaches the position desired.
Then lock the nut (2).
3rd STAGE ADJUSTMENT (with selector on Pos. 3)
Adjustment of air shutter:
Unloosen the nut (6) turn the screw (7) until the air shutter (1) reaches the position desired.
Then lock the nut (6).
Pressure regulation (2° - 3° stadio):
this is set at 15 bar at the factory.
Should such pressure be reset or changed, just turn the screw (8).
The pressure gauge must be mounted in place of cap (5).
1
2
3
6
7
9
10 458
D8384
Fig. 6