Riello PRESS 140 T/N ECO Quick start guide

Installation, use and maintenance instructions
2915831 (4) - 11/2012
Heavy oil burners
CODE MODEL TYPE
3436885 PRESS 140 T/N 466 T80
3436886 PRESS 140 T/N 466 T80

5831 1
TECHNICAL DATA
ELECTRICAL DATA
Motor IE1
Motor IE2
1- Suction line
2- Return line
3- Air shutter opening motor
4- Pump pressure adjustment screw
5- Manometer plug (G 1/8)
6- Vacuometer plug (G 1/2)
7- Reset push-button of the motor overload relay
8- Electric board
9- Cable clamps
10 - Control box reset push-button and lock-out lamp
11 - Adjustment thermostat
12 - Regulating bush for combustion head
13 - Wiring terminal board
14 - Ignition transformer
15 - Filter
16 - Valves group
17 - Manometer
18 - Lamp
19 - Commutator
20 - Low limit thermostat
21 - High limit thermostat
22 - Timer
Thermal power - Output 320 / 1600 kW - 28 / 140 kg/h (See page 3)
Operation 1st stage - 2nd stage - 3rd stage
Fuel Oil with max. viscosity 50 mm2/s (7°E) at 50°C
with kit: max. viscosity 500 mm2/s (65°E) at 50°C
Pump 350 kg/h at 25 bar
Electrical supply Three phase: 220 V +10% -10% ~ 60 Hz without neutral
220-380 V +10% -10% ~ 60 Hz with neutral
Motor 15.9 A / 220V - 9.2 A / 380V
Ignition transformer Primary: 2 A - Secondary: 2 x 6.5 kV - 35 mA
Heaters 4 kW
Absorbed electrical power 18.6 kW
Electrical supply Three phase: 220 V +10% -10% ~ 60 Hz without neutral
220-380 V +10% -10% ~ 60 Hz with neutral
Motor 14.6 A / 220V - 8.5 A / 380V
Ignition transformer Primary: 2 A - Secondary: 2 x 6.5 kV - 35 mA
Heaters 4 kW
Absorbed electrical power 18.6 kW
Fig. 1
Quantity Accessories
2 Flexible tubes
2 Nipples
4Screws
1 Gasket for flange
5 Cable clamps

5831 2
DIMENSIONS
COMBUSTION CHAMBER PRESSURE - MAXIMUM OUTPUT
(Three nozzles in operation)
Operation field: Limit Safety
When the burner operates with only one or two nozzles, the pressurization conditions are improved and no
problems arise.
Boiler front plate drilling
Combustion head projection
For the combustion head projection carefully follow the boiler
manufacturer indications.
A proper protection with refractory material on the combustion head
projecting into the combustion chamber shall be made, when boilers
with frontal smoke box are used.
*It is possible with a spacer, upon request
kg/h
kW
mbar

5831 3
OPERATION AND EFFICIENCY OF THE BURNER
ACCESSOIRES
RADIO DISTURBANCE PROTECTION KIT: Code 3010386
If the burner is installed in places particularly subject to radio disturbance (emission of signals exceeding 10 V/m) owing
tothepresenceofanINVERTER,orinapplications where the length of the thermostat connections exceeds 20 metres,
a protection kit is available as an interface between the control box and the burner.
1st STAGE
POWER AND OUTPUT
MINIMUM MAXIMUM
kW kg/h kW kg/h
1st nozzle: ignition phase 262 23 536 47
1s t + 2nd nozzle: intermediate phase 536 47 1060 93
1s t + 2nd + 3rd nozzle: operation phase 798 70 1595 140
2nd STAGE
POWER AND OUTPUT
MINIMUM MAXIMUM
kW kg/h kW kg/h
1st nozzle: ignition phase 262 23 536 47
1st + 2nd nozzle: 1st stage of operation 536 47 1060 93
1st + 2nd + 3rd nozzle: 2nd stage of operation 798 70 1595 140
3rd STAGE
POWER AND OUTPUT
MINIMUM MAXIMUM
kW kg/h kW kg/h
1st nozzle: 1st stage of operation 319 28 536 47
1st + 2nd nozzle: 2nd stage of operation 638 56 1060 93
1st + 2nd + 3rd nozzle: 3rd stage of operation 798 70 1595 140

5831 4
HEAVY OIL SUPPLY LINE
RING SUPPLY LINE
(for heavy oil with viscosity up to 50°E at 50°C)
1- Tank (heated for heavy oil)
2- Filter (with resistance for oil > 7°E at 50°C)
3- Forwarding pump
4- Control manometer
5- Shutter valves (in couple) excluding the burner
6- Burner (provided for kit for heavy oil code no. 3000721)
7- Pressure adjuster
8- Filter (with resistance for oil > 7°E at 50°C)
9- Burner pump
WARNING
- The oil could easily flow through the pipes if those are properly seized, protected and heated (by electricity, steam
or hot water).
- The forwarding pump capacity should be at the least double of that of the burner pump.
- If several burners are supplied through the same ring supply line, the forwarding pump should have a capacity of
approx. 30% more than the sum of the single burners outputs.
- For starting-up: after excluding the burner by the shutter valves (5) let the oil flow into the supply ring up to reach
the required circulation; after that open the valves and supply normally the burner.
GRAVITY SUPPLY LINE
(only for oil with max. viscosity up to 7°E at 50°C)
Notice: before placing the burner in operation, ensure that the return line is open. Any obstruction may damage the
pump seal.
H
meters
L meters
ø 1” ø 11/4”
0210
0,5 3 11
1412
1,5 5 13
2614
Pump priming
Loose the tap of the vacuometer plug
(6) (fig. 1) and wait for the oil flow.
H= Difference in the pipes height
L= Total length of the suction tube

5831 5
INTERNAL WIRING DIAGRAM
(carried out by the factory)
LEGEND
CMV Fan motor contact maker TB Burner earth
CO Commutator TE Electronic thermostat
CR Resistor contact maker TM Maximal thermostat
FR Photoresistance Tm Minimal thermostat
MB Burner terminal strip TP Timer
MV Fan motor L1 Lamps for 1° stage
RMO Control box L2 Lamps for 2° stage
RT Overload L3 Lamps for 3° stage
SPre-heater tank V1 Oil valves for 1° stage
SM Air-damper actuator V2 Oil valves for 2° stage
SO Probe PT100 V3 Oil valves for 3° stage
TA Ignition transformer VS Safety valves
2618

5831 6
WIRING CONNECTIONS TO THE TERMINAL BOARD
(carried out by the installer)
2645
NOTE:
yCheck the lock-out by darkening the photo-cell after removal of the cover.
ATTENTION HIGH VOLTAGE.
yIn case of supply 220V without neutral, connect the motor and the pre-heater thank through delta (the “star”
connection is the original one, made for 380V).
yNOTE
In systems where the run of wiring connecting the thermostat exceeds 20 metres in length, or in places where
the burner is subject to particularly disturbing electromagnetic interference (over 10 v/m), you must insert the
relay-interface kit item number 3010386.
220V 380V
A Ampere T25 T25
B Ampere T50 T35
C mm22,5 2,5
D mm210 6
HRemote lock-out signal
I1 Optional switch on-off burner
MB Burner terminal strip
PS Reset push - button
SA High temperature oil alarm
TL Limit control device system
TS Safety control device system
T2 Load control system for 2nd stage
T3 Load control system for 3rd stage

5831 7
CHOICE: OF THE NOZZLES - OF THE PUMP PRESSURE -
OF THE COMBUSTION HEAD ADJUSTMENT
• First of all state the maximum output required with all three nozzles in operation.
• On the base of the maximum output choose, from table A, three related nozzles.
Nozzles: 60° - Pump pressure: 25 bar.
• The references of table B should be followed in case of need of:
- modification of the pump pressure in order to vary the output,
- diverse composition of the 3 nozzles group,
- knowledge of the output in 1st and 2nd stage.
SUGGESTED NOZZLES
The pump pressure is referred to all three nozzles operating. The pump pressure increases automatically when two
nozzles are operating and becomes higher with only one nozzle.

5831 8
Suggested pressure
- Light oil: 25 bar
- Heavy oil: 28 bar (transformation kit)
Rated nozzles deliveries are listed on the table.
A tollerance of ± 5% concerns the real delivery against the rated one.
The pump leaves the factory set at 25 bar.
• On the base of the maximum delivery detect, from table C, the combustion head adjustment.
The adjustment should be made by turning the screw Atill the
set-point (see diagram) is on the line with the washer B.
Nozzles delivery
Pump pressure
Combustion head adjustment
Maximum output

5831 9
AIR SHUTTERS ADJUSTMENTS
The adjustment of the air shutters shall be set each time, with reference to the nozzles deliveries andthe combustion
chamber pressurization.
Fig. 2 shows the positioning of the air shutters.
Fig. 3 shows the positioning of the cams of the motor.
Air shutters adjustments
1st stage: manual regulation carried out by acting on the sector A(fig. 2).
2nd-3rd stage: carried out by acting on the coloured lever of the motor (fig. 3).
Blue lever: adjustment not necessary.
Positioned by the factory on the vertical of the motor axis. It maintains the shutters of 2nd- and 3rd stage
closed during the 1st stage operation and in the stop periods.
Do not turn clockwise (-) the lever to avoid crawlings of the air shutters, turning the lever anticlockwise
(+) the motor will be in different position during the passage from 2nd to 1st stage or during the stop.
Orange lever: for 2nd stage air shutters adjustment, it is adjustable both in opening and in closing position.
Red lever: for 3rd stage air shutters adjustment, it is adjustable both in opening and closing position.
Black lever: it controls the opening of the 2nd stage oil valve. It has always to anticipate the orange lever.
The control of the 3rd stage valve is automatic through one of the cam next to the red lever.
Fig. 2
Fig. 3

5831 10
SPRAY TEMPERATURE ADJUSTMENT
Thermostat for adjustment - maximum value - minimum value
Electronic adjustment thermostat By means of information relayed from a PT100 probe immersed in the oil in the
delivery manifold, the thermostat adjusts spray temperature. (The correct conditions for fuel spray are shown in the
temperature/viscosity graph below).
Example: fuel oil with 7 °E viscosity at 50 °C is pre-heated to approximately 110 °C.
Note: although the temperature set on the thermostat should correspond to the temperature of the fluid, it is good
practice to check that the thermometer shows the correct reading once the unit has been in operation for a few
minutes.
The LED will illuminate to indicate that the heating resistances are working properly.
Minimum temperature thermostat. In addition to shutting down the burner if the fuel temperature should fall below the
critical value for correct combustion, this thermostat also provides a permissive signal at the time of burner start-up.
(Factory set at approximately 80°C, adjustable by removing the pre-heater cover and relative plate).
Maximum temperature thermostat. This switches off the resistance when, because of failure of the adjustment ther-
mostat, the temperature of the pre-heater increases to unacceptable levels; a “high temperature” alarm output is
provided on the burner terminal strip. (Factory setting is approximately 180°C).
Renewing the minimum and maximum temperature thermostats.
Reposition the probes of the new thermostat, after having first loos-
ened the plate pack securing screws. Make sure that the probe is
touching the resistance and the plate pack as shown in the adjacent
figure. The same precautions should be taken when renewing the re-
sistances in contact with the thermostat probes.
If the pre-heater should malfunction, use an ohmmeter to check that
the resistances located in contact with the temperature probes are not
burnt out (reading of approximately 35 Ohm).
Changing the PT100 probe in the oil delivery manifold:
Fit the supplied nut and biconical collar on the new probe, insert a
length of approximately 40 mm in the manifold, and secure firmly into place.
At this point, the section remaining outside the manifold can be bent as required, with no risk of damaging the re-
sistance.
Atomisation temperature
Viscosity at 50°C
mm2/s °E
Max. temperature thermostat
Adjustment thermostat probe
Thermometer
Min. temperature thermostat
Pre-heater
Purge
Thermostat probe
Resistance
Tubes into aluminium plate
Aluminium
plate

5831 11
CYCLE OF THE BURNER START-UP
(tx) Factory setting: 20 s.
This time determines the heavy oil tempera-
ture at ignition. It can be adjusted, accord-
ing to the fuel’s viscosity, by the timer 22)
(Fig. 1).
The adjacent diagram shows the suggest-
ed settings.
Motor lock-out
It is caused by the over load relay when overload oc-
curs or no current supply.
Re-set: push button 7 and 10 (fig. 1)
NB.: Periodically clean the filter of the pre-heater tank.
THREE STAGE OPERATION
Lock-out because
no ignition
Normal
Thermostat
Motor
Pre-purge
1st stage valve
2nd stage valve
3rd stage valve
Ignition transformer
Lock-out lamp
2848
tx (s)
Viscosity at 50°C (°E)
D3211
t
x
max = 60 s
3rd stage
2nd stage
1st stage
max.

5831 12
BURNER START-UP CYCLE DIAGNOSTICS
During start-up, indication is according to the followin table:
OPERATING FAULT DIAGNOSTICS
The control box has a self-diagnostic system, which easily allows identifying the operating faults (RED LED signal).
ITo use this function, wait at least ten seconds from the safety lock out, and then press the reset button for a minimum of 3 sec-
onds.
After releasing the button, the RED LED starts flashing as shown in the diagram below.
The pulses of the LED constitute a signal spaced by approximately 3 seconds.
The number of pulses will provide the information on the possible faults, according to the table below:
COLOUR CODE TABLE
Sequences Colour code
Pre-purging           
Ignition phase           
Operation, flame ok            
Operating with weak flame signal          
Electrical supply lower than ~170V           
Lock-out          
Extraneous light           
Key: Off Yellow Green Red
RED LED on
wait at least 10 s
Press button
for > 3 s Signal Signal
Interval
3 s
In the event of a burner lockout, more than two conse-
cutive burner reset operations could cause damage to
the installation. On the third lockout, contact the After-
sales Service.
WARNING
If further lockouts or burner faults occur, interventions
must only be made by qualified, authorised personnel
(as indicated in this manual, and in compliance with
the laws and regulations currently in force).
DANGER
SIGNAL PROBABLE CAUSE
2 flashes The flame does not stabilise at the end of the safety time:
– faulty photocell;
– faulty or soiled oil valves;
– faulty ignition transformer
– poor burner regulation.
3 flashes – Not used.
4 flashes – Light in the chamber before firing.
7 flashes Loss of flame during operations:
– poor burner regulation;
– faulty or soiled oil valves.
8 flashes – Faulty thermostat for oil permissive signal;
– Heating resistances blown.
10 flashes – Wiring error or internal fault;
– Presence of electromagnetic disturbance: use the radio disturbance protection kit

Subject to modifications
RIELLO S.p.A.
I-37045 Legnago (VR)
Tel.: [phone]
http:// www.riello.it
http:// www.rielloburners.com