Riello P 300 T/G Quick start guide

Installation, use and maintenance instructions

2915907 (5) - 02/2015

Light oil burners

CODE MODEL TYPE

3478985 P300 T/G 478 T80

3478986 P300 T/G 478 T80

2915907

TECHNICAL DATA

ELECTRICAL DATA

Model

P300 T/G

Thermal power

Capacity

712/1779 - 3560 kW

60/150 - 300 kg/h

Operation 1

stage - 2

stage - 3

stage

Fuel

Light oil, max. viscosity at 20° C: 6 mm

/s (1.5° E)

Model

P300 T/G

Electrical supply 3 ~ 220/380V - 60Hz

Fan motor IE2 rpm

3500

9.2

220/380

29.1/16.8

Ignition transformer Primary: 2 A

Secondary: 2x 6.5 kV - 35 mA V

Electrical intake power kW max 12

Model

P300 T/G

Electrical supply 3 ~ 220/380V - 60Hz

Fan motor IE3 rpm

3540

9.2

220/380

30.5/17.6

Ignition transformer Primary: 2 A

Secondary: 2x 6.5 kV - 35 mA V

Electrical intake power kW max 10.7

2915907

BURNER DESCRIPTION

1- Suction line

2- Pump pressure adjustment screws

3- Return line

4- Manometer plug (G 1/4)

5- Vacuometer plug (G 1/4)

6- Electric board

7- Wiring terminal board

8- Control box reset push-button and lock-out lamp

9- Cable clamps

10 - Ignition transformer

11 - Regulating bush for combustion head

12 - Valves group with hydraulic jacks

EQUIPMENT

Flexible tubes . . . . . . . . . . . . . . . . . . . . . . .No. 2

Nipples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .No. 2

Cable clamps. . . . . . . . . . . . . . . . . . . . . . . .No. 4

Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . .No. 4

Extensions (only long head) . . . . . . . . . . . . . .No. 2

Gasket for flange. . . . . . . . . . . . . . . . . . . . . . .No. 1

DIMENSIONS (mm)

* It is possible with a spacer upon request.

Fig. 1

Burner

Boiler front plate

drilling

2915907

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

to the presence of an INVERTER, or in applications 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.

STAGE

POWER AND OUTPUT

MINIMUM MAXIMUM

kW kg/h kW kg/h

nozzle: ignition phase 593 50 1186 100

+ 2

nozzle: intermediate phase 1186 100 2372 200

+ 2

+ 3

nozzle: operation phase 1779 150 3558 300

STAGE

POWER AND OUTPUT

MINIMUM MAXIMUM

kW kg/h kW kg/h

nozzle: ignition phase 593 50 1186 100

+ 2

nozzle: 1

stage of operation 1186 100 2372 200

+ 2

+ 3

nozzle: 2

stage of operation 1779 150 3558 300

STAGE

POWER AND OUTPUT

MINIMUM MAXIMUM

kW kg/h kW kg/h

nozzle: 1

stage of operation 712 60 1186 100

+ 2

nozzle: 2

stage of operation 1245 105 2372 200

+ 2

+ 3

nozzle: 3

stage of operation 1779 150 3558 300

2915907

COMBUSTION CHAMBER PRESSURE - MAXIMUM OUTPUT

(three nozzles in operation)

Operation field in accordance with DIN 4787

When the burner operates with only one, or two nozzles, the pressurization conditions are improved and no problems

arise.

DIMENSIONS OF THE TESTING COMBUSTION CHAMBER

(in compliance with ISO 5063 - 1978)

For the combustion head projection carefully

follow the boiler manufacturer indications.

A proper protection with refractory material on

the combustion chamber shall be made, when

the boilers with frontal smoke box are used.

D = Boiler diameter in mm

P = Position of the boiler movable

wall (mm) Testing thermal load

2915907

SUPPLY LINE

NOTICE

Before placing the burner in operation, ensure that the return line is open.

Any obstruction may damage the pump seal.

Pump priming: Fill the pump with the light oil from the vacuometer plug (5) (fig. 1), put the burner in operation, purge

the air from the manometer plug (4) (fig. 1) and wait for the pump priming. If lock-out occurs repeat the procedure.

H= Difference in the pipes height L= Total length of the suction tube

øi = Internal diameter of the tube. Copper tubes ø 14 and 16 mm could be replaced by steel tubes G 1/2” and G3/4”.

Pay attention to do not overcome the max. depression of 0.45 bar (35 cm Hg), over this

value the fuel may turn into gas.

Check the pipes are perfectly sealed.

When the fuel tank is under the burner level we suggest to let the return line arrive where

the suction line starts.

In this case the foot valve is not necessary.

Should the return line arrive over the fuel level, the foot valve is indispensable.Notice that

this solution is less safe than the previous one, because it is possible the valve has not a

good sealing.

Pump priming: Loose the tap from the vacuometer

plug 5 (fig. 1) and wait for the flow of the fuel.

meters L meters

I.D. 14 mm I.D. 16 mm

0 0 5

0.5 5 10

1 10 20

1,5 20 40

2 30 50

meters L meters

I.D. 14 mm I.D. 16 mm

0 50 100

0.5 40 80

1 30 60

1,5 20 40

2 10 20

3 5 10

2915907

INTERNAL WIRING DIAGRAM

(carried out by the factory)

KEY TO LAYOUT

CMV Fan motor contactor MB Wiring terminal board

CO Commutator MV Fan motor

FR Photocell RT Thermal relay

h 1

stage hourcounter TA Ignition transformer

h 2

stage hourcounter TB Burner ground (earth) connection

h 3

stage hourcounter VS

Safety

solenoid valve

stage lamp V1

stage solenoid valve

stage lamp V2

stage solenoid valve

stage lamp V3

stage solenoid valve

L4 Lock - out motor lamp

2567

2915907

ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BLOCK

(to be carried out by the installer)

D2648

KEY TO LAYOUT

HRemote lock - out signal TL Load limit remote control system

I1 Burner manual stop switch TS Safety load control system

MB Wiring terminal board T2

stage load control system

PS Reset push - button T3

stage load control system

TB Burner ground (earth) connection

220V 380V

F A gG/gL 63 50

S mm

6,0 4,0

Check the lock-out by darkening the photo-cell after removal of the cover.

ATTENTION: HIGH VOLTAGE

Important:

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-inter face kit item number 3010386.

Note:

2915907

CHOICE OF: NOZZLES - PUMP PRESSURE -

COMBUSTION HEAD ADJUSTMENT

•

State, first of all, the maximum output required with all three nozzles in operation.

•

On the base of the maximum required output, choose-from table A or B - three related nozzles.

Nozzles: 60° - Pump pressure: 12 bar

For three-stage operation (up to 193 kg/h) 1

and 2

nozzle are not equal to the 3

one. Follow this procedure in

order to obtain higher values of CO

(during 1

and 2

stage of operation), complying with German Standard DIN.

•

The references on the table C have to 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 1

and 2

stage.

SUGGESTED NOZZLES.

(1) The pump pressure is referred to all three nozzles operating, the pressure increases automatically with two nozzles

in operation and more with only one.

Stage / 2

Stage

ANozzles 60°

Pump 12 bar (1) Total delivery

kg/h

GPH

st +

nd +

12.00 12.00 12.00 154.50

13.00 13.00 13.00 167.40

13.80 13.80 13.80 177.60

14.00 14.00 14.00 180.30

15.00 15.00 15.00 193.20

15.30 15.30 15.30 197.10

16.00 16.00 16.00 206.10

17.00 17.00 17.00 219.00

17.50 17.50 17.50 225.30

18.00 18.00 18.00 231.90

19.00 19.00 19.00 244.80

19.50 19.50 19.50 251.10

20.00 20.00 20.00 257.70

21.50 21.50 21.50 276.90

22.00 22.00 22.00 283.20

24.00 24.00 24.00 309.00

Stage

BNozzles 60°

Pump 12 bar (1) Total delivery

kg/h

GPH

st +

nd +

13.80 10.50 10.50 149.40

13.80 11.00 11.00 153.60

13.80 12.00 12.00 162.20

14.00 13.00 13.00 171.70

15.30 13.80 13.80 184.10

15.00 14.00 14.00 184.60

15.00 15.00 15.00 193.20

15.30 15.30 15.30 197.10

16.00 16.00 16.00 206.10

17.00 17.00 17.00 219.00

17.50 17.50 17.50 225.30

18.00 18.00 18.00 231.90

19.00 19.00 19.00 244.80

19.50 19.50 19.50 251.10

20.00 20.00 20.00 257.70

21.50 21.50 21.50 276.90

22.00 22.00 22.00 283.20

24.00 24.00 24.00 309.00

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