Riello Burners PRESS 45N Quick start guide

2915894 (2) - 01/2009

Installation, use and maintenance instructions

Heavy oil burner

CODE MODEL TYPE

3434585 PRESS 45N 615 T80

3434586 PRESS 45N 615 T80

5894 1

1- Suction line

2- Return line

3- Pump pressure adjustment screw

4- Manometer plug (G 1/8)

5- Vacuometer plug (G 3/8)

6- Air shutter opening motor

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

8- Reset push-button of the motor overload relay

9- Regulating bush for combustion head

10 - Sheathed filter for the thermometer

11 - Valves group

12 - Manometer with protection valve 16 - Wiring terminal board

13 - Adjustment thermostat 17 - Fair leads

14 - Pre-heater relay 18 - Back-pressure valve

15 - Ignition transformer

DIMENSIONS

Thermal power - Output 114 / 205 - 513 kW - 10 / 18 - 45 kg/h

Operation Two stages

Fuel Oil with max. viscosity at 50 °C: 150 mm2/s (20 °E)

Electrical supply Three phase 220V +10% -10% ~ 60Hz without neutral

380V +10% -10% ~ 60Hz with neutral

Motor 2.4 A / 220V - 1.5 A / 380V

Ignition transformer Primary: 2 A - Secondary: 2x 6.5 kV / 35 mA

Heaters 2.8 kW

Absorbed electrical power 3.7 kW

Pump 65 Kg/h at 20 bar

Fig. 1

*For extended - head version

Quantity Accessories

2 Flexibles tubes

2 Nipples

2Seals

4Screws

1 Gasket for flange

2 * Extensions for bars

5894 2

COMBUSTION CHAMBER PRESSURE - MAXIMUM OUTPUT

(two nozzles in operation)

When the burner operates with only one nozzle, the pressurization conditions are improved and no problems arise.

Minimal fuel capacity with only one nozzle: 10 kg/h - 114 kW

Note for the extend. combustion head version

Apply the extensions provided as accessories for the burner withdrawing.

Front plate detail for

boiler mounting

5894 3

FUEL OIL GRAVITY FEED SYSTEMS

GRAVITY SYSTEM (fuel oil with viscosity max. 7°E at 50°C)

Pump priming: loose the tap of the

vacuometer plug 5) (fig. 1) and wait

for the fuel flow.

H: Difference in the pipes height.

L: Length of the suction pipe.

SUCTION SYSTEM (fuel oil with viscosity max. 7°E at 50°C)

Not advised, to be used only in case of previously existing system.

Never overcome the max. de-

pression of 0.5 bar (38 cm Hg).

With higher values the fuel em-

anates gas.

The pipes shall be perfectly

sealed. When the tank is

placed below of the burner lev-

el, the return pipe should reach

the same level of the suction

pipe.

In this case the foot valve is not

required.

RING SYSTEM (for heavy oil with viscosity up to 20°E/50°C)

1- Tank (properly heated for heavy oil) 5- Forwarding pump

2- Filter (with resistance for oil > 7°E/50°C) 6- Manometer

3- Burner 7- Burner pump

4- Couple of cocks (excluding the burner) 8- Pressure adjuster

Notice: All the pipes have to be properly seized, sealed and heated (elect. resistance or hot steam or water) to

let the fuel flow.

Warning: Before to put the burner in operation verify that no obstruction exists into the pipes, any obstruction may

damage the sealing of the pump.

meters

L meters

ø 3/4”

gas ø 1”

gas

0510

0.5 9 15

11120

1.5 14 25

21730

meters

L meters

ø 1”

gas ø11/4”

gas

02445

0.5 21 40

11835

1.5 15 30

21225

2.5 9 20

3615

5894 4

ELECTRICAL WIRING CONNECTIONS

(carried out by the factory)

LEGEND

426

135

531

642

MV2HS1

ST0

ST1ST2

411 85918 13 17 10

1612 15

RMO88.53A2

L1R

NLS3 T1 30 T2 T6 T8

V2 1

V2 2

L1 L3L2 N

CMV

D2599

CMV Fan motor contactor

CR Pre-heart contactor

FSuppressor

FR Photoresistance

MB Wiring terminal board

MV Fan motor

RResistence

RMO Control box

RT Therminal overload

S Pre-heart

SM Servomotor

TA Ignition transformer

TB Earth of the burner

TE Start-up and adjustment thermostat

Tm Minimum value contact thermostat

TM Maximum value contact thermostat

V… Electromagnetic valves

5894 5

ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BOARD

(to be carried out by the installer)

NOTICE: Leads minimal section 1,5 mm2.

TWO STAGE OPERATION

It can be achived by the thermostat connected to 12 and 13 wiring terminal board (removing the bridge) controlling

2nd valve

PRE-HEATER RESISTANCES CONNECTIONS

D2643

HRemote lock-out signal

IN Manual burner stop switch

MB Wiring terminal board

TL Limit control device system

TR High-low mode control device system

TS Safety control device system

KEY TO LAYOUT

220V 380V

A Ampere T10 T6

B mm21,5 1,5

5894 6

FASTENING OF THE ELECTRICAL WIRES

All the wires, which have to be connected to the wiring terminal board 16) (fig. 1) shall pass through the fair leads

17) (fig. 1) as per this scheme.

1- Pre-heating resistances single phase supply: fair lead Pg 21

2- Motor three phase supply: fair lead Pg 16

3- Single phase supply and safety thermostat: fair lead Pg 13.5

4- Control thermostat: fair lead Pg 13.5

5- 2nd stage thermostat:fair lead Pg 13.5

6- Pre-sheared holes

Further prospective signals or controls can be connected to the burner wiring terminal board by removing the metal

weldnuts from the pre-sheared holes and inserting a commun fair lead for the passage and the clamping of the leads.

NOTES

- Carry out a safe earth connection.

- Verify the burner stop by opening the boiler thermostat and the burner lock-out by darkening the photo-resistance.

5894 7

CHOICE OF NOZZLES - OF THE PUMP PRESSURE

OF THE COMBUSTION HEAD ADJUSTMENT

Advise pressure

- Light oil: 20 bar

- Heavy oil: 25 bar

Rated deliveries of the nozzles are indicated on the above list and refer to a light oil having viscosity from 3 to 5° E at

50° C pre-heated at 100° C.

The effective delivery may vary of ± 5% against the rated one.

In case of requirement of intermediate values, the pump pressure or the nozzles match could be changed.

The pump is set by the factory at 20 bar.

Combustion head adjustment

Turn the screw A till the set-point, detected from the diagram,

is on line with the washer B.

In case of very heavy oil it is advised to use high wear

resistance nozzles (for instance Monarch F 80 H0)

Nozzles delivery

Pump pressure Combustion head adjustment

Maximum output

Nozzle

GPH (45° - 60°) 20 bar

kg/h 25 bar

kg/h

1,50 + 1,50 18,00 20,30

1,75 + 1,75 21,00 23,80

2,00 + 2,00 24,00 27,10

2,25 + 2,25 27,00 30,50

2,50 + 2,50 30,00 34,00

3,00 + 3,00 36,00 40,60

3,50 + 3,50 42,00 -

3,50 + 4,00 45,00 -

Set-point

Set-point 4

5894 8

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

The orange lever controls the air damper position for the 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 anticipate - for a bit - the red lever,

but never the orange one.

BURNER START-UP PROGRAM

MOTOR LOCK-OUT

It is caused by the motor overload relay if overload occurs or no phase.

Reset: push the buttons 7) and 8) fig. 1.

Orange lever

Opening +-Closing

Red lever

Blue lever

Black lever

Thermostat

Motor

Ignition transformer

1st flame valve

2nd flame valve

Lock-out lamp

Lock-out because

no ignition

Normal

D2894

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