Riello 3473784 Kurzanleitung

2915897 (2) - 08/2012

Installation, use and maintenance instructions

Pressure jet burner

CODE MODEL TYPE

3473784 PRESS GW 605 T80

5897

1- Suction line fitting

2- Return line fitting

3- Suction gauge fixing point (G 1/8)

4- Pressure gauge fixing point (G 1/8)

5- Pump pressure adjuster

6- Wiring terminal board

7- Combustion head control shaft

8- Fair leads

9- Control box reset button with signal of lock-out

DIMENSIONS (mm)

* Length available with special blast tube to be separately required.

Thermal power 107 / 178 - 350 kW - 92.000 / 153.000 - 301.000 kcal/h

Output 9/15 - 30 kg/h

Fuel Gas oil, max. viscosity at 20 °C: 6 mm2/s (1.5 °E)

Electrical supply Single-phase 220V +10% -10% ~ 60Hz

Motor 1.85 A / 220V

Capacitor 8 µF

Ignition transformer Primary: 1.8 A / 220V - Secondary: 1x 8 kV - 30 mA

Absorbed electrical power 0.4 kW

Fig. 1

Burner

Boiler front plate

drilling

Quantity Accessories

2 Flexibles oil-lines

2 Connectors for flexibles

2 Gasket for flexibles

1 Flange gasket

4Screws

1 Pipe fitting

1 Pipe fitting gasket

5897

PRESSURE IN THE COMBUSTION CHAMBER - OUTPUT

(in compliance with DIN 4787)

The burner is drawn for on-off operation and high-low operation.

Minimum firing-rate at on-off operation is 15 kg/h (two nozzles) and 9 kg/h (one nozzle) with high-low operation.

DIMENSIONS OF THE TEST COMBUSTION-CHAMBER (DIN 4787)

Pressure in the combustion

chamber in mbar

Burner output kg/h

Specific thermal test load

D = Boiler diameter in mm

P = Position of the mobile

back in mm

5897

HYDRAULIC SYSTEM

Gravity feed from the bottom of the oil storage tank

Gravity feed over the top of the oil storage tank

H= Difference in height; L= The total length of the suction line, including the vertical section.

The copper pipes of 8 mm and 10 mm I.D., as shown on the tables above, may be replaced by steel pipes of 1/4”

or 3/8” Gas.

The dimension P should not exceed 10 m, to avoid

breakage of pump seals.

meters

L meters

I.D. 8 mm I.D. 10 mm

0.5 5 10

11020

1.5 15 30

22040

The dimension P should not exceed 10 m, to avoid

breakage of pump seals.

Oil lines must be perfectly sealed. The use of copper

pipe is therefore recommended. The pump suction

must not exceed 4 m w.c. (30 cm Hg) because beyond

this value the pump becomes noisy.

The return line must terminate at the same level as the

foot valve; otherwise the pump may become air-locked.

meters

L meters

I.D. 8 mm I.D. 10 mm

03270

0.5 28 62

12455

1.5 20 48

21640

3725

3.5 - 10

Suction feed

5897

BURNER ELECTRICAL WIRING

(carried out by the factory)

KEY TO LAYOUT

CCapacitor TA Ignition transformer

FR Photocell TB Burner ground (earth) connection

MB Wiring terminal block V1 1st stage solenoid valve

MV Fan motor V2 2nd stage solenoid valve

RMO Control box

2463

5897

ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BLOCK

(to be carried out by the installer)

NOTICE

- The electric wiring carried out by the installer must be in compliance with the rules in force in the Country.

- Leads minimal section 1 mm2.

FLAME MODULATION

The flame modulation is obtainable through the thermostat, controlling the second valve, connected to the terminals

8 and 9, removing the existing bridge.

2646

KEY TO LAYOUT

HRemote lock - out signal TL Limit control device system

MB Wiring terminal block TR High - low mode control device system

PS Lock - out reset button TS Safety control device system

TB Burner ground (earth) connection

5897

FIXING OF THE ELECTRICAL WIRES

All the electrical wires, which are to be connected to the terminal block 6) (fig. 1) shall pass through the fair leads 8)

(fig. 1) as per this scheme.

1- Single phase supply: fair lead Pg 13.5

2- Adjustment thermostat: fair lead Pg 13.5

3- Safety thermostat: fair lead Pg 13.5

4- 2nd stage thermostat: fair lead Pg 13.5

5- 6- 7- 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

- Do not exchange the neutral wire with the phase (avoid the plug-pin connection).

- 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.

ACCESSORIES

• RADIO DISTURBANCE PROTECTION KIT

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.

Code 3010386

5897

BURNER ADJUSTMENT

Establish, on the basis of the output desired, and in accordance with the table and the diagram underneath:

- the type of nozzle;

- the pump pressure;

- the combustion head setting.

EXAMPLE

The burner has to be matched with a boiler of 210 kW.

Assuming an efficiency of 90%, we need to develop approximately 233 kW i.e. burning reughly 20 kg/h.

In the output column we find, corresponding to 20, on the left, the required nozzles (2 of 2.50 GPH at 60°) the pump

pressure (12 bar), and on the right the correct position of the combustion head (3 set-points).

(1) Nozzles of the major existing makers may be used.

It might well be possible however, that for certain specific outputs, one type of nozzle is less suitable than others.

It is recommended not to change the atomizing angle.

(2) It is recommended not to goes down to the 10 bar, otherwise the jack controlling the air damper will open with

difficulty.

The pump pressure may be varied by acting on the screw 5) (fig. 1) and it can be controlled by placing a pressure

switch on the pressure gauge 4) (fig. 1).

Output in kg/h

(4) Adjustment of the head (N° of set - points)

5897

(3) The indicated outputs are drawn from the average statistical data of

our tests.

Real output may well vary by ± 5%.

(4) The rear level of the control-shaft (7) (fig. 1) must line-up with the

set-point number, indicated by the diagram.

In the sketch on the right, the shaft is shown, in the position required

by the example on page 7.

AIR DAMPER ADJUSTMENT

Air damper adjustment for the first flame

Loosen the screw (1), the nut (3) and move the graduated scale (2) so that the pointer (4) lines-up with the set-point

desired; then tighten the screw (1) and the nut (3). A sufficiently exact control, valid for 12 bar and for the different

boilers pressurizations is given by the following table:

NOTE

For any necessary combustion adjustment, at the first flame stage, remove the bridge or the second stage thermo-

stat (see page 5).

Regulation of the air damper for the second flame

Loosen the threaded locking-ring (1) and tighten the hexagon (2) in order to reduce flow; slacken the hexagon to

increase flow.

This adjustment shall be modified, from time to time, in relation to the various combustion chambers pressurizations.

Set - point 3

On the sketch the graduated scale is shown, in

the position required by the example on page 7.

Set - point 2

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