Riello G5RT MC Quick start guide

20013744 (4) - 04/2011

Installation, use and maintenance instructions

安装 , 使用以及维护说明书

Light oil burner

轻油燃烧器

CODE - 编码 MODEL - 型号 TYPE - 类型

20013624 G5RT MC 447T2

Three stage operation

三段火运行

20013744

INFORMATION ABOUT THE INSTRUCTION MANUAL

INTRODUCTION

The instruction manual supplied with the burner:

- is an integral and essential part of the product and must not be sepa-

rated from it; it must therefore be kept carefully for any necessary

consultation and must accompany the burner even if it is transferred

to another owner or user, or to another system. If the manual is lost

or damaged, another copy must be requested from the Technical

Assistance Service of the area;

- is designed for use by qualified personnel;

- offers important indications and instructions relating to the installation

safety, start-up, use and maintenance of the burner.

DELIVERY OF THE SYSTEM AND THE INSTRUCTION MAN-

UAL

When the system is delivered, it is important that:

- The instruction manual is supplied to the user by the system manu-

facturer, with the recommendation to keep it in the room where the

heat generator is to be installed.

- The instruction manual shows:

- the serial number of the burner;

- the address and telephone number of the nearest Assistance

Centre;

- The system supplier carefully informs the user about:

- the use of the system,

- any further tests that may be necessary before the system is

started up,

- maintenance and the need to have the system checked at least

once a year by the manufacturer or another specialised techni-

cian.

To ensure a periodic check, recommends the drawing up

of a Maintenance Contract.

..................................................................................

1 20013744

TECHNICAL DATA

BURNER DESCRIPTION

BURNER EQUIPMENT

Flexible pipes with nipples. . . . . . . . . . . N. 2 Screws and nuts for flange. . . . . . . . . . . . . . N. 4

Screw with two nuts for flange. . . . . . . . N. 1 Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. 1

Insulating gasket . . . . . . . . . . . . . . . . . . N. 3

TYPE 447T2

Thermal power – output 26 / 35.5 ÷ 66.4 kW – 2.2 / 3 ÷ 5.6 kg/h

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

Electrical supply Single phase, 230 V ± 10% ~ 50Hz

Motor Run current 0.75 A –2850 rpm – 298 rad/s

Capacitor 4 F

Ignition transformer Secondary 8 kV –16 mA

Pump Pressure: 7 ÷ 15 bar

Absorbed electrical power 0.185 kW

D8390

123

Fig. 1

1– Return line

2– Suction line

3– Gauge connection

4– Pressure regulator, 2nd - 3rd stage

5– Vacuum gauge connection

6– Hydraulic jacks with air-damper

7– Combustion head adjustment screw

8– Lock-out lamp and reset button

9 – Regulation pressure, 1st stage

10 – Selector, 1st - 2nd - 3rd stage

20013744 2

FIRING RATE

DIMENSIONS

BOILER FIXING

It is necessary that the insulating gasket is placed

between the boiler door and the burner flange.

This insulating gasket has six holes, which, if

necessary, can be modified as shown on the

drawing on the right.

Verify that the installed burner is lightly

leaned towards the button (Fig. 2).

The burner is designed to allow entry of the

flexible oil-lines on either side of the burner.

Pressure in the combustion

chamber – mbar

0.8

0.4

Light oil output - kg/h

40 70 Thermal power - kW

D8791

50 60

0.2

0.6

24563

270 122 224

130

45°

ø80

228

175

D4646

180

75 72

150

45°

Flange Burner

D5242

Fig. 2

D5572

3 20013744

HYDRAULIC SYSTEMS

WARNING: before starting the burner make sure that the return pipe-line is not clogged:

any obstruction would cause the pump seals to break.

meters

L meters

I.D.

8 mm I.D.

10 mm

0.5

1.5

100

The pump vacuum should not

exceed a maximum of 0.4 bar

(30 cm Hg).

Beyond this limit gas is released

from the oil.

Oil lines must be completely

airtight. The return line should

terminate in the oil tank at the

same level as the suction line.

In this case a non-return valve is

not required.

meters

L meters

I.D.

8 mm I.D.

10 mm

0.5

1.5

3.5

100

H max. 4 m

max. 4 m

D5493

D5376

max. 4 m

min.0.1m

D5219

SYSTEMS NOT PERMITTED IN GERMANY

WARNING

The pump is supplied for use with a two pipe sys-

tem. For use on a one pipe system, it is necessary

to remove the by-pass screw (A).

Priming the pump

Loosen the plug of the vacuum gauge (5, Fig. 1,

page 1) and wait until the fuel flows out.

SYSTEM NOT

PERMITTED IN ITALY

When the return line arrives over the fuel level, a non-return

valve must be used.

This solution however is less safe than previous one, due to

the possibility of leakage of the valve.

Priming the pump

Start the burner and wait for the priming. Should lock-out

occur prior to the arrival of the fuel, await at least 20 seconds

before repeating the operation.

A filter must be installed on the suction fuel line.

H= Difference of level; L= Max. length of the suction line; ø i = Internal diameter of the oil pipes.

D5809

20013744 4

HYDRAULIC CIRCUITS

KEY

S- Pump with filter and pressure regulator (high pressure)

VR1 (NO) -1

st stage oil return valve normally open

VR2 (NO) -2

nd stage oil return valve normally open

VR3 (NC) -3

rd stage oil return valve normally close

AD2 - Air damper hydraulic jack for the 2nd stage

AD3 - Air damper hydraulic jack for the 3rd stage

PR1 -1

st stage oil regulator (low pressure)

PR2 -2

nd- 3rd stage oil regulator (high pressure)

GV -ValveUnit

U1 -1

st-2nd stage nozzle

U2 -3

rd stage nozzle

VR 1

PR2

AD AD

2 3

PR1 GV

VR 2

VR 3

D9511

5 20013744

ELECTRICAL WIRING

123 56789

10 11 12

123 123 12

123

230V

50Hz

V1 MV2 R

III

D8393 CONTROL BOX

BURNER SWITCH

Fig. 3 230V ~ 50Hz NOTES

Wires of 1 mm2section.

The electrical wiring carried out by the installer

must be in compliance with the rules in force in

the Country.

The cables of the electrodes must be kept

away from the rest of the connections.

KEY (Fig. 3)

C- Capacitor

E-Electrodes

FR -Photocell

M- Motor

R- Heater

S- Selector, 1st -2nd -3rd stage

T-Thermostat

TS - Safety thermostat

V1 -1

st stage valve

V2 -2

nd stage valve

V3 -3

rd stage valve

A-B- Auxiliary clamps

BK -Black

BN -Brown

BU -Blue

GY -Grey

WH -White

WARNING: do not exchange the neutral with the phase.

20013744 6

COMBUSTION ADJUSTMENT

In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjustment and

testing must be carried out observing the instruction manual of the boiler, including verification of the CO and

CO2concentration in the flue gases, their temperatures and the average temperature of the water in the

boiler.

To suit the required appliance output, fit the nozzle, the settings of the combustion head and the air damper

opening in accordance with the following schedule.

The values shown in the table are measured on a CEN boiler (as per EN 267).

They refer to 12.5% CO2at sea level and with light oil and room temperature of 20°C.

(* see Fig. 7, page 8)

NOZZLES RECOMMENDED: Monarch type R Danfoss type S

Delavan type W - E Satronic type S

Steinen type Q

COMBUSTION HEAD SETTING: This is done when fitting the nozzle, with the blast tube removed. It

depends on the output of the burner and is carried out by

rotating the regulating rod, till the terminal plane of the blast tube

is level with the set-point, as indicated in the schedule.

For this application, the head should be

fully open (at notch 6).

Nozzle 1* Nozzle 1* + 2*

Stage 1st 2nd 3rd

Nozzle GPH 0.65 0.65 + 0.60

Angle 60° 60°

Pump Pressure bar 10 15 15

Burner output kg/h 2.2 3.0 5.6

Comb. head adjustment Set-point 6

Air damper adjustment Set-point 2.5 3.0 8.0

135

D5582

Terminal plane of the blast tube

Regulating rod

Shutter

Blast tube

Fig. 4

7 20013744

Combustion head settings indicated in the schedule are

valid for most cases.

The setting of the fan output according to the installa-

tion should normally be done only through the air

damper. Should one subsequently want to retouch also

the setting of the combustion head, with the burner run-

ning, operate on the rod (1) with a 6 mm spanner (2) as

follows:

TURN TO THE RIGHT: (SIGN +)

In order to increase the volume of air entering the com-

bustion chamber and thus diminishing its pressure.

There is a reduction of CO2and the adhesion of the

flame to the air diffuser disc improves.

(Setting advisable for ignitions at low temperatures).

TURN TO THE LEFT: (SIGN –)

In order to reduce the volume of air entering the combustion chamber and thus increasing its pressure. The

CO2improves and the adhesion of the flame to the diffuser tends to reduce. (This setting is not advisable for

ignitions at low temperatures).

In any case do not bring the combustion head setting more than one point away from that indicated in the

schedule. One set-point corresponds to 3 turns of the rod; a hole (3) at its end facilitates counting the number

of turns.

AIR DAMPER ADJUSTMENT: The settings indicated in the schedule refer to the burner with

its metal cover fitted and the combustion chamber with “zero”

depression. These regulations are purely indicative.

Each installation however, has its own unpredictable working

conditions: actual nozzle output; positive or negative

pressure in the combustion-chamber, the need of excess air,

etc. All these conditions may require a different air-damper

setting.

It is important to take account of the fact that the air output of the fan differs according to whether

the burner has its metal cover fitted or not.

Therefore we recommended to proceed as follows:

adjust the air damper as indicated in the schedule (point 3);

mount the cover, simply by means of the upper screw;

check smoke number;

should it become necessary to modify the air output, remove the cover by loosening the screw, adjust the

air damper, remount the cover and finally recheck the smoke number.

2 3

D5587

Fig. 5

20013744 8

PUMP PRESSURE AND AIR OUTPUT (Fig. 6)

The burner is provided with an hydraulic device controlled by the economizer which reduces to approx. 70%

the max. output of gas oil and air.

1st STAGE ADJUSTMENT (with selector on Pos. 1)

Adjustment of air shutter:

Unloosen the nut (9) turn the screw (10) until the air shutter (1) reaches the position desired.

Then lock the nut (9).

Pressure regulation:

this is set at 10 bar at the factory.

Should such pressure be reset or changed, just turn the screw (4).

The pressure gauge must be mounted in place of cap (5).

2nd STAGE ADJUSTMENT (with selector on Pos. 2)

Adjustment of air shutter:

Unloosen the nut (2) turn the screw (3) until the air shutter (1) reaches the position desired.

Then lock the nut (2).

3rd STAGE ADJUSTMENT (with selector on Pos. 3)

Adjustment of air shutter:

Unloosen the nut (6) turn the screw (7) until the air shutter (1) reaches the position desired.

Then lock the nut (6).

Pressure regulation (2° - 3° stadio):

this is set at 15 bar at the factory.

Should such pressure be reset or changed, just turn the screw (8).

The pressure gauge must be mounted in place of cap (5).

10 458

D8384

Fig. 6

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