Riello Burners PRESS 100 N Kurzanleitung

2915896 (2) - 01/2009

Installation, use and maintenance instructions

Heavy oil burner

CODE MODEL TYPE

3435985 PRESS 100 N 617 T80

3435986 PRESS 100 N 617 T80

5896 1

1- Suction line

2- Return line

3- Pump pressure adjustment screw

4- Manometer plug (G1/8)

5- Vacuometer plug (G1/2)

6- Air shutter opening motor

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

8- Reset push-button of the motor over load 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 285 / 490 - 1140 kW - 25 / 43 - 100 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 7.4 A / 220V - 4.3 A / 380V

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

Heaters 7 kW

Absorbed electrical power 9 kW

Pump 150 kg/h at 20 bar

Fig. 1

*For extended head version

Quantity Accessories

2 Flexibles tubes

2 Nipples

2 Seals

4Screws

1 Gasket for flange

2 * Extensions for bars

5896 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: 25 kg/h - 285 kW

Note for the extended combustion head version

Apply the extensions provided as accessories for the burner withdrawing.

kg/h

mbar

Front plate detail for

boiler mounting

5896 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 65°E at 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

035

0.5 6 10

1915

1.5 12 20

21525

meters

L meters

ø 1”

gas ø11/4”

gas

01226

0.5 10 22

1918

1.5 7 15

2512

2.5 4 9

3-6

5896 4

ELECTRICAL WIRING CONNECTIONS

(carried out by the factory)

KEY TO LAYOUT

CMV Fan motor contactor

CR Pre-heart contactor

FSuppressor

FR Photoresistance

MB Wiring terminal board

MV Fan motor

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

246 95

135

13 A1

654321987

426

135

ST2

ST1

ST0

HS1

MV2

171318 9 5 8114

1512 16

RMO88. 53A2RMO88. 53A2

L1R

L2R

L3R

NL1 L2 L3 L S3 T1 30 T2 T6 T8

V2 1

V2 2

CMV

D2613

5896 5

ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BOARD

(to be carried out by the installer)

NOTE

- Leads minimal section: 1,5 mm2.

WARNING

For supply at 220 Vmakethe triangle connection on the pre-heater andonthe motor (the original connection is “star”

for 380 V).

TWO STAGE OPERATION

It can be achived by the thermostat connected to 14 - 15 wiring terminal board (removing the bridge) controlling 2nd

valve.

PRE-HEATER RESISTANCES CONNECTIONS

D2644

220V 380V

A Ampere T16 T10

B mm21,5 1,5

C Ampere T25 T16

D mm264

KEY TO LAYOUT

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

5896 6

FASTENING OF THE ELECTRICAL WIRES

All the wires, which are 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 three-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.

- Check the stop of the burner, by opening the boiler thermostat and the burner lock-out, by disconnecting the lead

from the flame probe.

5896 7

CHOICE OF NOZZLES - OF THE PUMP PRESSURE

OF THE COMBUSTION HEAD ADJUSTMENT

Advised 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

Turnthescrew A till theset-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

Set-point

kg/h

Nozzle

GPH (45° - 60°) 20 bar

kg/h 25 bar

kg/h

3,50 + 3,50 42,00 47,40

4,00 + 4,00 48,00 54,20

4,50 + 4,50 54,00 61,00

5,00 + 5,00 60,00 67,80

5,50 + 5,50 66,10 74,50

6,00 + 6,00 72,10 81,40

6,50 + 6,50 78,10 88,10

7,00 + 7,00 84,10 95,00

7,50 + 7,50 90,10 101,60

8,00 + 8,00 96,10 -

8,50 + 8,50 100,00 -

Set-point 4

5896 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 of the air damper is detectable when

the burner is off. Do not overcome the position of the or-

ange 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.

Black lever

Red lever

Orange lever

Blue lever

-Closing

Opening +

Lock-out because

no ignition

Normal

Thermostat

Motor

Ignition transformer

1st flame valve

2 nd flame valve

Lock-out lamp

D2894

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