Riello GI/EMME 300 Quick start guide

2915142 (6)
Installation, use and maintenance instructions
Dual fuel Gas-Oil/Gas burner
MODEL TYPE
GI/EMME 300 495 T80

5142
1
TECHNICAL FEATURES
The burner conforms to IP 40 level of insulation as per CEI/70.1
Thermal power 107/175 ÷ 340 kW - 92.000/150.000 ÷ 292.000 kcal/h
Fuels Oil, max. viscosity at 20°C: 6mm
2
/s (1.5°E) natural gas with
Pci 8600 kcal/m
3
Lpg with Pci 22.200 kcal/m
3
Minimum gas pressure
(measured at the test-point) Maximum capacity requires 9.6 mbar with natural gas, 11.8 mbar with LPG. Combustion chamber at 0 mbar.
Maximum gas pressure 150 mbar
Electrical supply Single-phase 220 V +10% -15% 60 Hz
Fan-capacitor motor 1.85A / 220 V - 6.3 µF
Pump-capacitor motor1A / 220 V - 6.3 µF
Ignition transformer Primary: 1.8A / 220 V - Secondary: 30 mA / 1x8 kV
Pump Output 50 kg/h at 12 bar - max pressure 15 bar
Operation Two stage: gas or oil
Fig. 1
EQUIPMENT
Quantity Burner accessories
1 Gas-train’s gasket
8 Screws
1 Insulating screen
3 Seal
2 Oil hoses
4 Connectors
4 Gaskets
1 Lpg transf. kit
2 Oil nozzles
1 Flange
KEY TO LAY-OUT
1- Oil valve 1°
2- Oil valve 2°
3- Safety oil valve
4- Oil supply port
5- Oil return port
6- Pressure regulator at the pump
7- Air damper motor
8- Pressure gauge port (G 1/8)
9- Vacuum gauge port (G 1/8)
10 - Terminal board
11 - Fan motor capacitor
12 - Cable gland
13 - UV photocell
14 - Oil motor capacitor
15 - Oil-gas selector switch
16 - Control-box reset button
17 - Air pressure-switch
2 1 394 5 87 6 17 15 11 10 12
16
14
13
S7537

5142
2
DIMENSIONS
WORKING RANGE
PRESSURE IN THE COMBUSTION CHAMBER - 2
nd
STAGE OUTPUT
MINIMUM GAS PRESSURE - 2
nd
STAGE OUTPUT
Pressure : measured at the test point with combustion chamber at 0 mbar.
Boiler front-plate
drilling
* Extension that you can obtain with special extended head (to be requested separately)
.
Burner
160
160
155 M10
410 610
185
*320
397
97
292
165
Rp 1 1/2
D1785
S7564
S7565
ø 140
Kcal/h
mbar
S7585
kW
Min output at 1st stage 107kW - 9Kg/h
Kcal/h
mbar
S7586
kW
Gas pressure test point
Natural gas
LPG S7536

5142
3
FIXING TO THE BOILER
GAS SUPPLY LINE
In order to devide the combustion head from the rest of the burner, you have to:
- remove the connection (1) from the two valves;
- remove the 4 screws (2 - 3);
- slide the burner body (A) along the rails (4);
- mount the group (B) to the boiler’s plate (6) interposing gasket (5).
Mount the group (A) to the boiler front.
Fit the nozzles and regulate the combustion head (as specified below).
S7539
654132
BA
{ {
1- Gas supply pipe 7- Min. gas pressure switch
2- Manual valve 8- Gas safety shut off valve
3- Isolator joint 9- 1° stage gas shut off valve
4- Filter 10 - 2° stage gas shut off valve
5- Pressure governor 11 - Burner
6- Pressure test-point
S7566
6986
7
54
6
32 1
11
10

5142
4
OIL SUPPLY
S7542
S7541
Please note:
all oil lines must be airtight.
We suggest copper-piping. Level as the suc-
tion pipe, then a none return valve is not
required and the section-pipe can be discon-
nected without causing any problems.
H= Margin; L= Inlet-pipe’s length, including the vertical line.
The copper pipes with diameter 8 and 10, shown in the schemes, can be replaced with 1/4 and 3/8
steel pipes, commercial gas without welding.
HLm
m Øi 8 Øi 10
0.5 5 10
11020
1.5 15 30
22040
HLm
m Øi 8 Øi 10
03270
0.5 28 62
12455
1.5 20 48
21640
3725
3.5 – 10
H
max. 4m
H
max. 4m
H

5142
5
BURNER ELECTRICAL WIRING
(carried out in the factory)
KEY TO LAY-OUT
C: Pump motor capacitor
C1: Fan motor capacitor
CO:Selector switch
MA:Auxiliary terminal strip
MB:Burner terminal strip
MP:Pump motor
MV:Fan motor
PA: Air pressure switch
SM:Servo-motor
TA: Ignition transformer
TB: Burner earth
UV: Probe U.V.
V1: 1° stage valve
V2: 2° stage valve
VS: Oil safety valve
SELECTOR SWITCH
OIL O GAS
3 - 4
5 - 6
7 - 8
9 - 10
11 - 12
13 - 14
15 - 16
S7587
S7562

5142
6
ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BLOCK
(to be carried out by the installer)
KEY TO LAYOUT
MB - Burner terminal strip V1 - 1° stage gas shut off valve
TS - Safety remote control system V2 - 2° stage gas shut off valve
TL - Limit control system VS - Gas safety shut off valve
TR - 2° stage remote control system S-Remote lock signal
PG - Min. gas pressure switch
NOTICE
- The electric wiring carried out by the installer must be in compliance with the rules in force in the
country.
- Leads minimal section 1.5 mm2.
- Burners with non-stop operation: for safety reasons, this type of burner must be stopped every 24
hours of operation, by means of an hours-counter to be connected in series with the adjustment
devices.
- The flame modulation in obtainable trought the 2° stage remote control system (TR).
Connected to the terminals 6-7.
S7568

5142 7
FIXING OF THE ELECTRICAL WIRES
All the electrical wires, which are to be connected into the terminal rail 10 (fig. 1) should pass through
the cable glands hubes 12 (fig. 1), accordingly the scheme below.
1- Single phase supply : gland Pg 13.5
2- Regulation thermostat : gland Pg 13.5
3- Safety thermostat : gland Pg 13.5
4- GAS TRAIN : gland Pg 13.5 - for sheath ø 13
5- 2° stage thermostat : gland Pg 13.5
6- Precut hole
Further starts or controls can be connected into the terminal rail of the burner, taking out the metal
buttons from the precut holes and inserting a cable gland for the passage and extra cables.
To guarantee the IP 40 protection level, in accordance to CEI 70.1, seal the glands that are not used.
NOTES
- Do not exchange “Neutral” with “Phase” (avoid a plug/socket connection).
- Make a good earth connection.
Verify that the burner will lockout by firing the burner and obscuring the UV cell.
ATTENTION
When you close the burner on the two guide rail, all the slack should be pulled out the high voltage-
cable.
This burner is in accordance to the CEE law n.76/889, D.M. 9/10/1980, for protection against radio-
noises.
S7569

5142 8
COMBUSTION HEAD ADJUSTMENT
Adjustments can be made to the burner, when it is still open for installation (see page 3, fixing to
the boiler).
SETTING OF GAS DISTRIBUTOR
The burner leaves the factory setted for burning natural
gas (see the drawing on the right):
-Each hole (F) and each pipe (T) completely opened.
-For operation up to 200.000 kcal/h, close the NR. 1-2-
3 and 4 holes (F) by means of 4 nozzles supplied to-
gether with the lpg - kit.
To burn LPG fit the kit as detailed below:
-Fit 6 nozzles with ø 5 mm on outlets to holes (F).
Nozzle
1° 2° 1°+2°
kg/h
bar GPH kg/h GPH kg/h
10
12 2.25 2.25 8.7 9.6 1.75 1.75 6.7 7.4 15.4 17.0
10
12 2.25 2.25 8.7 9.6 2.00 2.00 7.7 8.5 16.4 18.1
10
12 2.25 2.25 8.7 9.6 2.25 2.25 8.7 9.6 17.4 19.2
10
12 2.50 2.50 9.6 10.6 2.50 2.50 9.6 10.6 19.2 21.2
10
12 3.00 3.00 11.6 12.8 3.00 3.00 11.6 12.8 23.2 25.6
10
12 3.50 3.50 13.5 14.9 3.50 3.50 13.5 14.9 27.0 29.8
10 4.00 15.4 4.00 15.4 30.8
Pump
pressure
NOZZLE’S CHOICE
Spray angle:
- usually, 60°
- for narrow combustion chambers: 45°
S7546
S7547
Position of the ignition electrodes
4 mm
4 mm
FT
1° stage nozzle 2° stage nozzle

5142 9
ADJUSTMENT OF THE AIR DAMPER MOTOR
STOP - Blue lever
This lever leaves the factory vertically positioned and
corresponds to the complete closing of the air damper.
A partial opening of the air damper might be obtained by
moving leftwards this lever (+ on the label).
The new position the air damper is detectable when the
burner is off. Do not overcome the position of the orange
lever for the 1st stage.
1st STAGE - Orange lever
Theorange levercontrols the airdamper positionforthe first
flame, it is adjustable both for opening and closing.
2nd STAGE - Red and black levers
The red lever controls the air damper position for the second flame, it is adjustable both for closing and
opening. The black lever controls the opening of the second oil valve and it must always - for a bit - the
red lever, but never the orange one.
Loosen the two screws (1), move the elbow (2) so that the rear part (3) coincides to the desired set-
point (4). Tighten the screws (1).
S7548
21
3
4
Kcal/h kW
S7588
Opening + - Closing
Black lever
Red lever
Orange lever
Blue lever
S7570

5142 10
BURNER START-UP CYCLE
Venting the gas supply.
This is done by removing the screw from the gas pressure switch, or the pressure test point.
AIR PRESSURE SWITCH (17 Fig.1)
Adjust the air pressure switch after adjustment of all the other
parts of the burner, with air pressure switch setted at beginning
of the scale.
When the burner works increase the regulating pressure,
turning the handle slowly in the clockwise till the burner is
locked out.
Then turn back of 1 mbar and repeat the burners starting, in
order to verify the good work; if you have a lock out, turn back
once again of 0.5 mbar.
PUMP’S FIRING
In case of drop-plant with supply from the tank’s bottom, back off the plug at the vacuumeter-joint 9)
(fig. 1), till the leaking of fuel.
In the other two situations, start up the burner, bleed the air of manometer-joint 8) P (fig. 1); if you
have a lock-out, repeat the cycle.
ATTENTION
Before starting up the burner, check that the return pipe has no occlusions.
Any occlusions will cause the break of the pump-sealing organ.
WORK WITH OIL
At the first ignition, when there is the passage from the first to the second flame, there is a strong
decrease of fuel-pressure owing to the filling of second nozzle’s pipe. This decrease can cause the
burn-out of the burner.
COMBUSTION CHECKS
CO2
It is better to set the burner with CO2not higher than 10% (gas with Pci 8600 kcal/m3).
So you avoid that a little unsetting (for example draft variation) causes combustion with few air and
with the production of CO.
CO
It must be not higher than 0.1% (thousand parts for million) in accordance to UNI-CIG 8042 norme.
Screw
Pressure gauge fixing point
Pressure switch
S7549
1 ÷ 10
mbar
Regulating handle
S7550

5142 11
CURRENT TO THE UV PHOTOCELL
Min. value for a good work: 15 µA.
If the value is lower, it can depends on:
- worked out photocell;
- low current (lower than 187V);
- bad regulation of the burner.
In order to measure the current, use a microammeter of 100 µA c.c., connected to the photocell, as in
the scheme, with a capacitor of 100 µF - 10VP c.c. at the same level of the instrument.
ANOMALIES DURING THE WORK
Block out for: flame failure (°).
Stop for: opening of gas pressure switch.
Closing of the valves and continuous pre-purge for opening of air pressure switch (°).
FLAME SIMULATION
If the photocell or the flame circuit do not work, it is possible to see the flame even if it does not exist.
In this case there is a lock out either this occurs when the thermostat opens at the end of work, or
when it closes at the starting up, or in every moment of pre-purge period.
BURNER STARTING UP PROGRAMME
If during the work the flame burns off, there is a lock out within 1 second.
+-
S7551
+
-
+-
Cell
UV
Normal Lock-out because no ignition
Thermostat
Motor
Ignition transf.
1st valve
1st flame
2nd valve
2nd flame
Lock-out S7589
35s min.
1s 20÷30s
35s min.
1s 2s max.

5142 12
BURNER STARTING DIFFICULTIES AND THEIR CAUSES
With reference to gas working (it is valid also for oil working, when signed with “° ”).
1) The burner goes through the pre-purge period normally, the flame ignites but the burner
goes on lock out within 3 seconds from the ignition:
- the photocell does not see: dirty, worked out, low current (below 187V); (°);
- the gas pressure switch is regulated too close to the working pressure (see point 4).
2) The flame does not ignite and the burner goes to lock out after or during the pre-purge period:
- through the valve passes few gas;
- it is not regular or there is no ignition electric arc; (°);
- from the pipe there is no air bleeding;
- the air pressure switch does not close the contact; it is wrong gly set or is defective; there is a
continuous pre-purge (°).
3) The burner does not start when the thermostat is closed:
- there is gas failure;
- the gas pressure switch does not close the contact; it is wrong gly set or is defective.
4) The burner continues to repeat the starting cycle without going on lock out:
- this concerns a very particular irregularity caused by the fact that the gas pressure in the gas-
mains lies very close to the value to which the gas pressure switch has been set.
As a result of this, the sudden pressure decrease at the opening of the valve causes the opening
of the pressure switch.
However this only temporary, because the valve immediately closes again, so than does the pres-
sure switch, because the pressure builds-up again, causing the cycle to be repeated over and
over. Sometimes for this reason a burner lock out can take place.
This can be remedied by lowering the setting of the pressure switch.

RIELLO S.p.A.
Via degli Alpini 1
I - 37045 Legnago (VR)
Tel.: [phone] Fax: [phone]
Con riserva di modifiche