Riello Burners COH 110 Quick start guide

2903209 (0)
Installation, use and maintenance instructions
Light oil - kerosene burner
One stage operation
CODE BOULTER CODE MODEL TYPE
3744364 8-716-111-549 COH 110 443T58

3209 1
TECHNICAL DATA
®Burner with CE marking in conformity with EEC Directives: EMC89/336/EEC, Low Voltage 73/23/EEC,
Machines 98/37/EEC and Efficiency 92/42/EEC
®The burner meets protection level of IP X0D (IP 40), EN 60529.
TYPE 443T58
Output - Thermal power 1.5 – 3.4 kg/h - 17 – 40 kW
Fuel Kerosene, viscosity 1.6 – 6 mm2/s at 20 °C
Light oil, viscosity 4 – 6 mm2/s at 20 °C
Electrical supply Single phase, 230V ± 10% ~ 50Hz
Motor Run current 0.85A – 2850 rpm – 298 rad/s
Capacitor 4 µF
Ignition transformer Secondary 8 kV – 16 mA
Pump Kerosene, maximum pressure 10 bar (145 psi)
Light oil, maximum pressure 15 bar (218 psi)
Absorbed electrical power 0.16 kW
1– Return line
2– Suction line
3– Gauge connection
4– Pump pressure regulator
5– Lock-out lamp and reset button
6– Screws fixing air-damper
7– Flange
8– Vacuum gauge connection
9– Screws for fixing the cover supplied
with the burner
8
D6102
Fig. 1
123
4
56
6
9
7
9
STANDARD EQUIPMENT
Quantity Description
1
1
1
1
1
2
Flange
By-pass screw
(clipped on the pump)
Screw with two nuts for flange
Cable grommet
Flexible oil pipe with nipple
Screws for fixing the cover

3209 2
FIRING RATE, (as EN 267)
OVERALL DIMENSIONS
BURNER FIXING
0.6
0.2
0.4
Fuel output - kg/h
Thermal power - kW
D7263
Pressure in the combustion
chamber – mbar
0.8
0
1.5 2 2.5
20 25 30
33.5
35 40
Flange Burner
272 219
130
=
28
45°
ø84
233
11
180
D6103
=
180
72 72
150
45°
96
S7386

3209 3
HYDRAULIC SYSTEMS
WARNING
The pump is supplied for use with
a one pipe system. For use on a two pipe system, it
is necessary to screw the by-pass screw (A) sup -
plied as burner’s accessory. (See figure).
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.
Should however the ret urn line arrives over t he f uel level, t he non-
return valve is indispensable.
This solution however is less safe than previous one, due to the possi-
bility of leakage of the valve.
WARNING:
◆Check periodically the flexible pipes conditions. Using kerosene, they have t o be replaced at
least every 2 years.
◆A metal bowl filter with replaceable micronic filter must be fitted in the oil supply pipe.
PRIMING 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.
W
arning: before starting the burner make sure that the return pipe-line is not clogged: any obstruc-
tion would cause the pump seals to break.
H
meters
L meters
I. D.
8 mm I.D. 10 mm
0.5
1
1.5
2
10
20
40
60
20
40
80
100
PRIMING PUMP
Loosen the plu g of the vacuum
gauge (8, fig. 1) and wait until the
fuel flows out.
A
H
meters
Lmeters
I. D.
8 mm I.D. 10 mm
0
0.5
1
1.5
2
3
3.5
35
30
25
20
15
8
6
100
100
100
90
70
30
20
H max. 4 m
H
H
max. 4 m
min. 0.1 m
D5299
D5300
D5199
H=Difference of level.
L=Max. length of t he suc-
tion line.
I.D.=Internal diameter of t he
oil pipes.

3209 4
ELECTRICAL WIRING
Brown
White (50V)
Blue
Motor Capacitor
Limit thermostat
Main switch
T6A
S7026
Black
CONTROL BOX
– To remove the control box from the burner, loosen
screw (A) (see figure) and pull towards the arrow.
– The photoresistance is fitted directly into the control-
box (underneath the ignition-transformer) on a plug-in
support.
230V ~50Hz
Safety thermostat
Remote lock-out lamp
(230V - 0.5A max.), if required
Blue
Brown
Terminal block of
control-box 530SE*
Valve
RUN OF THE ELECTRICAL CABLE
1 - Grommet N - Neutral
2 - Cable-clamp L - Phase
3 - Terminal block - Burner-earth
A321
D7261
Black
4 pin plug
4 pole socket
ATTENTION:
®Do not swap neutral and phase over, follow the diagram
shown carefully and carry out a good earth connection.
®The section of the conductors must be at least 1mm².
(Unless requested otherwise by local standards and legislation).
®The electrical wiring carried out by the installer must be in com-
pliance with the rules in force in the country.
Burner-earth
TESTING
Check the shut -down of the bur ner by openi ng
the thermostats.
TO BE DONE BY
THE INSTALLER
CARRIED-OUT
IN THE FACTORY

3209 5
COMBUSTION ADJUSTMENT
In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjust-
ment and testing must be carried out observing the instruction manual of the boiler, including verifica-
tion 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, fit the nozzle then adjust the pump pressure, the setting of the
combustion head and the air damper opening in accordance with the following schedule.
NOZZLES RECOMMENDED
Monarch type R - NS;
Delavan type W - A - E - B;
Steinen type Q - H;
Danfoss type B - H - S;
Danfoss type ES (only for kerosene).
Angle: 60° - in most cases.
80° - in case of flame detachment, during ignitions at low temperatures.
PUMP PRESSURE
The pump leaves the factory set for kerosene working.
10 bar: maximum pressure for kerosene.
FOR LIGHT OIL INCREASE PRESSURE
12 bar: pressure suitable for light oil in most cases.
14 bar: improves flame retention; it is therefore suitable for ignitions at low temperatures.
LIGHT OIL KEROSENE
Nozzle Pump
pressure
Burner
output
Air damper
adjustment Nozzle Pump
pressure
Burner
output
Air damper
adjustment
GPH Angle bar kg/h ± 4% Set-point GPH Angle bar kg/h ± 4% Set-point
0.40 80° 12 1.7 1.1 0.50 60°/80° 8 1.5 0.9
0.50 60° 12 2.1 1.8 0.60 60° 8 1.7 1.1
0.60 60° 12 2.6 2.2 0.65 60° 81.9 1.3
0.65 60° 12 2.8 2.7 0.75 80° 7.5 2.1 2.4
0.75 60° 12 3.2 3.5 0.85 60° 82.5 2.1
0.85 60° 11 3.5 4 1.00 60° 8 2.9 2.8
1.10 60° 8 3.4 3.8
1 2 3 1 2 3
1
2

3209 6
AIR DAMPER ADJUSTMENT
The regulation of the air-rate is made by adjusting the air
damper (1), after loosing the screws (2).
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 how-
ever, has its own unpredictable working conditions: actual
nozzle output; positive or negative pressure in the combus-
tion-chamber, the need of excess air, etc.
All these conditions may require a different air-damper set-
ting.
It is important to take account of the fact that the air
output of the fan differs according to whether the burn-
er has its metal cover fitted or not.
Therefore we recommended to proceed as follows:
– adjust the air damper as indicated in the schedule (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.
ELECTRODE SETTING
BURNER START-UP CYCLE
2
1
2D5675
3
Attention:
Before assembling or removing the
nozzle, loose n the screw (A) an d
move the electrodes ahead.
2 – 2.5 mm
4± 0.3 mm
IMPORTANT:
THESE DIMENSIONS
MUST BE OBSERVED
D5230 A
Normal Lock-out, due to light-failure
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
~ 12s D5229 ~ 12s ~ 5s

3209 7
ONLY FOR LIGHT OIL
ADJUSTMENTS, TO AVOID FLAME - DETACHMENT, AT BURNER IGNITION
This inconvenience can occur, when the temperature of the light oil decreases below +8 °C.
1) CORRECT POSITIONING OF THE ELECTRODES
(See page 6)
2) PUMP - SETTING
When the temperature of the light oil decreases below +8 °C, increase the pressure to 14 bar.
3) COMBUSTION-HEAD SETTING
Regulate the combustion head one set-point further ahead than indicated in the instructions.
Example: the instructions require to set the combustion head on set-point 3.
Instead, the setting is made on set-point 4.
4) FAN - AIR DAMPER ADJUSTMENT
Adjust the air damper of the fan, such as to obtain a smoke number not inferior to 1.
(i.e. a combustion with the lowest possible excess-air).
SAFETY WARNINGS
The dimension of the boiler’s combustion chamber must respond to specific values, in order to
guarantee a combustion with the lowest polluting emissions rate.
The Technical Service Personnel will be glad to give you all the imformation for a correct match-
ing of this burner to the boiler.
This burner must only be used for the application it was designed for.
The manufacturer accepts no liability within or without the contract for any damage caused to people,
animals and property due to installation, adjustment and maintenance errors or to improper use.
BURNER IDENTIFICATION
The Identification Plate on the product gives the serial number, model and main technical and per-
formance data. If the Identification Plate is tampered with, removed or missing, the product cannot
be clearly identified thus making any installation or maintenance work potentially dangerous.
BASIC SAFETY RULES
®Children or inexpert persons must not use the appliance.
®Under no circumstances must the intake grids, dissipation grids and ventilation vents in the in-
stallation room be covered up with cloths, paper or any other material.
®Unauthorised persons must not attempt to repair the appliance.
®It is dangerous to pull or twist the electric leads.
®Cleaning operations must not be performed if the appliance is not disconnected from the main pow-
er supply.
®Do not clean the burner or its parts with inflammable substances (e.g. petrol, alcohol, etc.). The
cover must be cleaned with soapy water.
®Do not place anything on the burner.
®Do not block or reduce the size of the ventilation vents in the installation room.
®Do not leave containers and inflammable products in the installation room.

2908201 (0)
Spare parts list
Catalogo ricambi
Catalogue pièces détachées
Ersatzteile Katalog
Onderdelencatalogus
Oil - Kerosene burner •Bruciatore di gasolio - kerosene •Brûleur fioul domestique - kérosène
Öl-Kerosen - Gebläsebrenner •Stookoliebrander kerosine
MOD. COD. BOULTER COD. TIPO/TYPE/TYP
COH 110 3744364 8-716-111-549 443T58

13007077 SEAL GUARNIZIONE JOINT DICHTUNG PAKKING A
23007811 PUMP POMPA POMPE PUMPE POMP C
33002279 COIL BOBINA BOBINE MV SPULE SPOEL B
43007028 O - RING MANTELLO E POMELLO JOINT TORIQUE O - RING DICHTING O - RING A
53007202 REGULATOR REGOLATORE REGULATEUR REGLER REGELAAR A
63007162 O - RING ANELLO OR JOINT TORIQUE O - RING DICHTING O - RING A
73005719 FILTER FILTRO FILTRE FILTER FILTER A
83006925 NEEDLE VALVE VALVOLA VANNE NADELVENTIL VENTIEL A
93007203 PLATE PIASTRINA PLAQUETTE ETRIER PLATTE BEUGELPLAATJE A
10 3007029 O - RING ANELLO OR JOINT TORIQUE O - RING DICHTING O - RING A
11 3007156 O - RING ANELLO OR JOINT TORIQUE O - RING DICHTING O - RING A
12 3001156 CONTROL BOX 530SE*APPARECCHIATURA 530SE*BOITE DE CONTR. 530SE*STEUERGERÄT 530SE*CONTROLEDOOS 530SE*B
13 3002278 CONTROL BOX BASE MORSETTIERA SOCLE STECKSOCKEL BASIS CONTROLEDOOS C
14 3000439 PUMP SEAL ORGANO DI TENUTA ORGANE D’ETANCHEITE WELLENDICHTUNG ASDICHTING A
15 3006553 SHELL AND KNOB MANTELLO E POMELLO ETRIER ET ECROU BÜGEL UND KNOPF BEUGEL EN MOER A
16 3000443 JOINT GIUNTO ACCOUPLEMENT KUPPLUNG KOPPELING A
17 3008472 TUBE TUBO TUYAU DRUCKROHR DRUKLEIDING
18 3006556 COVER COPERCHIO COUVERCLE DECKEL DEKSEL
19 3002280 P.E. CELL FOTORESISTENZA CELLULE PHOTORESISTANCE FOTOWIDERSTAND FOTOCEL A
20 3007708 ELECTRODE ASSEMBLY GRUPPO ELETTRODI GROUPE ELECTRODES ELEKTRODESYSTEM ELECTRODENGROEP A
21 3006001 CUP-SHAPED HEAD TESTA A BICCHIERE TETE A EMBOITEMENT MUFFENKOPF GLASVORMIGE KOP B
22 3003602 CONNECTOR RACCORDO MAMELON NIPPEL NIPPEL C
23 3005786 FLANGE FLANGIA BRIDE FLANSCH FLENS
24 3006552 ELECTRODE BRACKET FASCETTA SUPPORT ELECTRODES ELECTRODEN HALTERUN G ELECTRODENKLEM
25 3005724 NOZZLE HOLDER PORTAUGELLO PORTE GICLEUR DÜSENSTOCK SPROEIERHOUDER B
26 3007796 COLLAR COLLARE COLLIER INNERER FLANSCH TEGENFLENS
27 3007204 AIR DAMPER SERRANDA VOLET AIR LUFTKLAPPE LUCHTKLEP
28 3008448 SCREW VITE VIS SCHRAUBE SCHROEF
29 3005720 FLEXIBLE OIL LINE TUBO FLESSIBILE FLEXIBLE SCHLAUCH FLEXIBEL A
30 3005708 FAN GIRANTE VENTILATEUR GEBLÄSERAD VENTILATOR C
31 3005798 CAPACITOR 4 µF CONDENSATORE 4 µF CONDENSATEUR 4 µF KONDENSATOR 4 µF CONDENSATOR 4 µF B
32 3007971 MOTOR MOTORE MOTEUR MOTOR MOTOR C
33 3008473 BODY CARENATURA CAPOT VERKLEIDUNG BEDEKKING
34 3007793 LEAD AND 4 -PIN PLUG CAVO E SPINA A 4 POLI CABLE ET FICHE A 4 POLES VERBIN. UND 4 - POL. STECK. KABEL EN 4 - POL. STEKKER
N. COD. DESCRIPTION DESCRIZIONE DESCRIPTION BESCHREIBUNG BENAMING
8201
ADVISED SPARE PARTS
RICAMBI CONSIGLIATI
RECHANGE CONSEIL
EMPFOHLENE ERSATZTEILE
AANGERADEN
RESERVEONDERDELEN
A = Spare parts for minimum fittings - Ricambi per dotazione minima - Pièces détachées pour équipement mimimum - Erzatzteile für minimale Ausstattung - Reserveonderdelen voor minimale uitrusting.
A+B = Spare parts for basic safety fittings - Ricambi per dotazione base di sicurezza - Pièces détachées pour équipement standard de sécrité - Erzatzteile für Sicherheitsgrundausstattung - Reserveonderdelen voor basis veiligheidsuitrusting.
A+B+C = Spare parts for extended safety fittings - Ricambi per dotazione estesa di sicurezza - Pièces détachées pour équipement complet de sécurité - Erzatzteile für erweiterte Sicherheitsausstattung - Reserveonderdelen voor uitgebreide veiligheidsuitrusting.