Riello PRESS 140 T/N ECO Guida rapida

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

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.

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

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