Riello REG 35.3 Quick start guide

Installation, use and maintenance instructions

Οδηγίες εγκατάστασης, χρήσης και συντήρησης

2902518 (6) - 10/2014

Light oil burner

Καυστήρας Πετρελαίου

CODE - ΚΩ∆ΙΚΟΣ MODEL - ΜΟΝΤΕΛΟ TYPE - ΤΥΠΟΣ

3772117 REG 35.3 721 T

3772217 REG 35.5 722 T

One stage operation

Μονοβάθμιοι

2518

INDEX

1. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. BURNER DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.1 Burner equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.2 Firing rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.3 Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3.1 Boiler fixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3.2 Hydraulic systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.3 Electrical wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4. WORKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.1 Combustion adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.2 Recommended nozzles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

4.3 Electrodes adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.4 Pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4.5 Combustion head setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4.6 Air damper adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4.7 Burner start-up cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2518

1GB

1. TECHNICAL DATA

1.1 TECHNICAL DATA

2. BURNER DESCRIPTION

One stage light oil burner.

OBurner with CE marking in conformity with EEC directives: EMC 2004/108/EC, Low Voltage 2006/95/EC,

Machines 2006/42/EC and Efficiency 92/42/EC.

OThe burner meets protection level of IP X0D (IP 40), EN 60529.

OCE Certification No.: 0036 0342/03 as 92/42/EEC.

2.1 BURNER EQUIPMENT

Flexible pipes with nipples. . . . . . . . No. 2 Flange with insulating gasket. . . . . . . . . . . . . . . . . No. 1

TYPE 721T 722T

Output - Thermal power 1.8 – 3.2 kg/h - 21 – 38 kW 2.3 – 5 kg/h - 27 – 60 kW

Fuel Light oil, viscosity 4 –6 mm2/s at 20 °C

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

Motor Run current 0.7A Run current 0.75A

2750 rpm – 289 rad/s

Capacitor 4 F

Ignition transformer Secondary 8 kV - 16 mA

Pump Pressure: 8 – 15 bar – min. output 22 kg/h

Absorbed electrical power 0.17 kW

1– Flange with insulating gasket

2– Air damper

3– Photoresistance

4– Nozzle holder assembly

5– Reset button with lock-out lamp

6– Control box

7– Oil pump

8– Protection crankcase

Fig. 1

2 3 4 5 6

8D6308

2518

2GB

2.2 FIRING RATES (as EN 267)

2.3 OVERALL DIMENSIONS

3. INSTALLATION

3.1 BOILER FIXING

Pressure in the combustion

chamber – mbar

Light oil output- kg/h

Thermal power - kW

721T 722T

1.8 2 2.5 3 3.5

20 3525 30 40 45 50 55

454.5

0.8

0.6

0.4

0.2

D6128

FlangeBurner

211.5

215.5

279

130

150

170

6565

211

D6307

ø 89

121.5

Remove 4 screws (1), insert the flange (2)

and tighten screws (1) again. Insert the

insulating gasket (3) (if necessary increase

the holes as shown in fig. 2) and fix the

burner to the boiler, (see fig. 3).

Fig. 2

S7700

D5242

Fig. 3

2518

3GB

3.2 HYDRAULIC SYSTEMS

H= difference of level; L= max. lenght of the suction line; I.D. = internal diameter of the oil pipes.

OThe pump is designed for operation on a two line

system. In order to convert it for single line system it

is necessary to unscrew the return plug (2), remove

the by- pass screw (3) and then to tighten the plug

(2) (see fig. 4).

OIt is necessary to install a filter on the fuel supply line.

OBefore starting the burner make sure that the return

pipe-line is not clogged. An excessive back pressure

would cause the damage of the pump seal.

max. 4 m

meters

L meters

I.D.

8 mm

I.D.

10 mm

0.5

1.5

100

D5517

Fig. 4

D6186

4 632 7

SYSTEM NOT PERMITTED

Fig. 5

PRIMING PUMP

On the system in fig. 5 it is sufficient to loosen the suction gauge

connection (5, fig. 4) and wait until oil flows out.

On the systems in fig. 6 and 7 start the burner and wait for the priming.

Should lock-out prior to the arrival of the fuel, await at least 20 seconds before

repeating the operation.

The pump suction should not exceed a maximum of 0.4 bar (30 cm Hg).

Beyond this limit gas is released from the oil. Oil pipes must be completely

tight.

In the vacuum systems (fig. 7) the return line should terminate within the oil

tank at the same level as the suction line. In this case a non-return valve is not

required.

Should however the return line arrive over the fuel level, a non return valve is

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

possibility of leakage of the valve.

meters

L meters

I.D.

8 mm

I.D.

10 mm

0.5

1.5

3.5

100

D5518

max. 4 m

Fig. 6 Fig. 7

max. 4 m

1- Suction line

2- Return line

3- By-pass screw

4- Gauge connection

5- Suction gauge connection

6- Pressure adjuster

7-Coil

8- Main line port

9- Auxiliary pressure test point

IN GERMANY

2518

4GB

3.3 ELECTRICAL WIRING

WARNING

Do not exchange the neutral with the phase.

CARRIED-OUT

230V

50Hz

Main switch

T6A

Safety thermostat

Limit thermostat

Remote lock-out signal

(230V - 0.5A max.)

Photoresistance

Oil valve

Capacitor

Burner-earth

Black

White

Blue

Motor

Blue

Brown

CONTROL BOX

535SE

IN THE FACTORY

Fig. 8

S7031

ELECTRICAL CONNECTIONS

– Remove the protection crankcase (8,

fig. 1, page 1) after removing the 3

retainer screws. Widen the upper slit

and remove the protection crankcase,

inserting the oil pipe and the flexible oil

lines.

– Insert PG 13.5 cable-gland (1, fig. 8)

into the wire access hole and tighten it

with the nut.

– Insert the electrical cable into the con-

nector and make electrical connections

as shown in fig. 8.

– Put the protection crankcase back in

place.

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.

TESTING

Check the shut-down of the burner by opening the

thermostats and the lock-out by darkening the pho-

toresistance.

To remove the control box from the

burner proceed as follows:

– Take out the photoresistance (2, fig. 9,

page 5).

– Remove the nozzle holder assembly

(see fig. 9, page 5).

– Remove the protection crankcase (8,

fig. 1, page 1), as above mentioned.

– Disconnect the main voltage cable (3,

fig. 8).

– Remove screws (2, fig. 8) and discon-

nect wires of motors, photoresistance

and coil.

D5259

2518

5GB

4. WORKING

4.1 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

CO2 concentration in the flue gases, their temperatures and the average temperature of the water in the boiler.

To suit the required appliance output, choose the proper nozzle and adjust the pump pressure, the setting

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.

4.2 RECOMMENDED NOZZLES:

Delavan type W -B ; Danfoss type S - B;

Monarch type R ; Steinen type S - Q.

To reach the nozzle, the diffuser-disc assem-

bly and the electrodes, proceed as follows:

(see fig. 9 and 10)

– Disconnect the oil pipe fitting (1) from the

pump. Take out the photoresistance (2),

loosen the retainer screws (3) of the cover.

– Remove the nozzle holder assembly after

turning and sliding it out. The nozzle holder

assembly must stay on the left side of the

burner during its sliding.

– Remove the diffuser-disc assembly (4) from

the nozzle holder (5) after loosening the

screw (6).

– Insert the proper nozzle (9) into the nozzle

holder and tighten securely.

– Replace the diffuser-disc assembly (4) and

insert it in the nozzle holder (5) until the end.

Lock with screw (6).

4.3 ELECTRODES ADJUSTMENT

Loosen the screw (7), move the electrodes

assembly (8) and lock the screw (7), (see fig. 10).

TYPE

Nozzle Pump

pressure

Burner

output

Comb. head

adjustment

Air damper

adjustment

GPH Angle bar kg/h ± 4% Set-point Set-point

721 T

0.50 80° 10 1.8 0.5 1.5

0.50 80° 12 2.0 1.0 2.0

0.60 60°/80° 12 2.4 2.0 4.0

0.65 60°/80° 12 2.6 2.5 4.5

0.75 60° 13 3.2 4.0 6.5

722 T

0.60 80° 11 2.3 0.5 2.5

0.65 60° 12 2.6 1 3.5

0.75 60° 12 3.0 1.5 3.5

0.85 60° 12 3.4 2.5 5.0

1.00 60° 12 4.0 3 7.5

1.10 60° 12 4.4 4 9.5

1.25 60° 12 5.0 4 10.0

S7030

4.5 – 0.5 mm

02 – 2.5 mm

D5268

Fig. 10

Fig. 9

2518

6GB

4.4 PUMP PRESSURE

The pump leaves the factory set at 12 bar.

4.5 COMBUSTION HEAD SETTING (see fig. 11)

It depends on the output of the burner and is carried out by rotating clockwise or counterclockwise the set-

ting screw (1) until the set-point marked on the regulating rod (2) is level with the outside plane of the noz-

zle holder assembly (3).

4.6 AIR DAMPER ADJUSTMENT (see fig. 12)

Loosen the screw (1) and move the indicator towards the required set-point and then lock the screw (1).

4.7 BURNER START-UP CYCLE

Lock out is indicated by a lamp on the control box (5, fig. 1, page 1).

S7032

Fig. 11

S7033

Fig. 12

Lock-out due to failure to light

Normal

D5029

~12s

Thermostat

Motor

Ignition transformer

Valve

Flame

Lock-out lamp

~12s 5s

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