Riello 370T1 Series Quick start guide

2903193 (5) - 12/2006
Installation, use and maintenance instructions
Montage und Bedienungsanleitung
Light oil burners
Öl-Gebläsebrenner
CODE MODEL
MODELL
TYPE
TYP
3737005 BGK1 370T1
3737405 BGK2 374T1
GB
D
One stage operation
Einstufiger Betrieb

DECLARATION OF CONFORMITY Royal Decree (A.R.) 8/1/2004 -
Belgium
Producer: RIELLO S.p.A.
Via Pilade Riello, 7
37045 LEGNAGO (VR) Italy
Tel. ++39.0442630111
Fax ++39.044221980
Distributed by: RIELLO NV
Ninovesteenweg 198
9320 Erembodegem
Tel. [phone]
Fax. [phone]
e-mail. [e-mail]
URL. www.riello.be
This is to certify that the series of units specified below conforms to the model of the type
described in the EC declaration of conformity, and is produced and distributed in conformity with
the requirements laid down in Belgian Royal Decree (A.R.) dated 8 January 2004.
Product type: Light oil burner
Model: BGK1 – 370T1
BGK2 – 374T1
Standard applied: EN 267 and A.R. of 8 January 2004
Control body: TÜV Industrie Service GmbH
TÜV SÜD Gruppe
Ridlerstrase, 65
80339 Munchen DEUTSCHLAND
Measured value: NOx max: 120 mg/kWh
CO max: 8 mg/kWh
Date: 30/11/2005 RIELLO S.p.A.

3193 1GB
INDEX
1. BURNER DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Burner equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Firing rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1 Working position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Boiler fixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.3 Hydraulic systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.4 Electrical wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. BURNER OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 Combustion adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 Recommended nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.3 Pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.4 Maintenance position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.5 Combustion head setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.6 Air damper setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.7 Electrode positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.8 Flame detector adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.9 Fuel heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.10 Operating programme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6. FAULTS / SOLUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7. SAFETY WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.1 Burner identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2 Basic safety rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3193 2GB
1. BURNER DESCRIPTION
One stage light oil burner with low pollutant emissions (Nitric Oxide NOx, Carbon monoxide CO and unburnt
Hydrocarbons).
1.1 BURNER EQUIPMENT
Flange with insulating gasket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .No. 1
Screw and nuts for flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
7 pin plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .No. 1
Recirculating pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
Screw and nuts for flange to be fixed to boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. 4
Flexible oil pipes with nipples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .No. 2
1–Oilpump
2– Air damper adjustment assembly
3– Nozzle holder assembly
4– Flange with insulating gasket
5– Control box
6– Reset button with lock-out lamp
7– Flame detector
8– Combustion head
9– Recirculation pipe
10 –Motor
³Burner with CE marking in conformity with EEC directives: EMC 89/336/EEC, Low Voltage 73/23/EEC,
Machines 98/37/EEC and Efficiency 92/42/EEC.
³CE Certification No.: 0036 0232/98 (370T1) – 0036 0233/98 (374T1), as 92/42/CEE.
³The burner meets protection level of IP X0D (IP 40) as EN 60529.
³The burner is approved for intermittent operation as per Directive EN 267.
D7290
Fig. 1 2
7
6
1
3
10
5
9
4
8

3193 3GB
2. TECHNICAL DATA
2.1 TECHNICAL DATA
2.2 OVERALL DIMENSIONS
2.3 FIRING RATES, (as EN 267)
TYPE 370T1 374T1
Output 1.5 −3.0 kg/h 2.7 −5.0 kg/h
Thermal power 17.8 −35.6 kW 32 −59.3 kW
Fuel Light oil, viscosity 4 – 6 mm2/s at 20 °C
Electrical supply Single phase, 230V ±10% ~50Hz
Motor Run current 0.8A – 2750 rpm – 288 rad/s
Capacitor 4 µF
Ignition transformer Secondary 8 kV – 16 mA
Pump Pressure 8 – 15 bar
Absorbed electrical power 0.25 kW
TYPEABCDEØ FØ GHIL
370T1 255 280 202 230 192 87 89 10 28 107
374T1 255 280 202 230 197 90 89 10 28 115
C
11
45°
45°
Ø G
EA
189
106
140
168
H
83
83
D
B
Ø F
L
D7217
I
Pressure in combustion
chamber – mbar
Light oil output – kg/h
Thermal power – kW
12
15 20 25 30
3
35 40 45 50 55
45
60
D7637
0,2
0
0,8
0,6
0,4
370T1 374T1

3193 4GB
3. INSTALLATION
THE BURNER MUST BE INSTALLED IN CONFORMITY WITH LEGISLATION AND LOCAL STANDARDS.
3.1 WORKING POSITION
The burner is designed for operation in positions 1and 2only. Installation 1is the preferred option as it is the
only one that enables maintenance to be performed as described later on in this manual.
Operation is possible with installation option 2though maintenance cannot be performed with the burner con-
nected to the boiler. Note that any other installation position is likely to hinder the unit’s proper operation. Instal-
lations 3, 4 and 5are prohibited as safety is compromised.
3.2 BOILER FIXING
Important: with some boilers it is possible that the CO values exceed those declared in this manual.
To reduce these emissions, the recirculation pipe supplied must be used.
To fit the burner to the boiler it is necessary to carry out the following:
³If necessary insert the recirculating pipe (1) on the burner blast tube (2) and fix it with the screw (3), (see
fig. 2).
Attention: respect the dimensions, as described in chapter “2.2 OVERALL DIMENSIONS“ at page 3.
³Put on the flange (4) the screw and two nuts, (see fig. 4).
³Widen, if necessary, the insulating gasket holes (5, fig. 5).
³Fix the flange (4) to the boiler door (6) using screws (7) and (if necessary) the nuts (8) interposing the
insulating gasket (5), (see fig. 3).
D7088
1 2 3 4 5
S7709
Boiler door must have a max. thickness of 80 mm, refractory linig included.
ATTENTION
S7708
E9163
D5012
Fig. 2 3
1 2
8
4
6
4
Fig. 4
Fig. 5
5
7
75
Fig. 3

3193 5GB
3.3 HYDRAULIC SYSTEMS
*ONLY FOR ITALY: Automatic shut-off device as per Ministry of Internal Affairs’ regulation no. 73 dated 7/29/71.
H= difference of level; L= max. length of the suction line; I. D. = internal diameter.
PRIMING PUMP:
On the system in fig. 6 it is sufficient to loosen the suction gauge connec-
tion (6, fig. 7) and wait until oil flows out.
On the systems in fig. 8 and 9 start the burner and wait for the priming.
Should lock-out occur prior to the arrival of the fuel, await at least 20 sec-
onds 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. 9) 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 previ-
ous one, due to the possibility of leakage of the valve.
H
meters
L meters
øi
8 mm
øi
10 mm
0,5
1
1,5
2
10
20
40
60
20
40
80
100
³
The burner is designed to accommodate the installation of
light oil supply pipes on either side.
³
It is necessary to install a filter on the fuel supply line.
³
The pump is designed to allow working with two pipes. In
order to obtain one pipe working it is necessary to unscrew
the return plug (2), remove the by-pass screw (3) and then
screw again the plug (2). (See fig. 7).
³
Before 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.
WARNING:
H
meters
L meters
øi
8 mm
øi
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
SYSTEM
NOT PERMITTED 1- Suction line
2- Return line
3- By-pass screw
4 - Gauge connection
5- Pressure adjuster
6- Suction gauge connection
7- Valve
8- Auxiliary pressure gauge
1
324
8
76
Fig. 7
D5487
5
H
max. 4 m
max. 4 m
H
H
H
D6329
Fig. 8 Fig. 9
**
H
max. 4 m
*
D6328
Fig. 6
IN GERMANY

3193 6GB
3.4 ELECTRICAL WIRING
CARRIED-OUT IN THE FACTORY
7 pin plug
7 pole socket
h
T
L1 B4S3T2T1N
Black
White
Blue
Capacitor
Burner-earth
Main switch
T6A
Neutral
CONTROL BOX
550SMD
230V ~50Hz
L
1231231234
DO NOT EXCHANGE NEUTRAL WITH PHASE
WARNING
Motor
D5521 Heater with start
thermostat
12
Flame detector
Safety
thermostat T
Black
Blue
Oil valve
Hour counter
(230V - 0.1A max.)
Limit
thermostat Remote lock-out signal
(230V - 0.5A max.)
Ignition
electrodes
Brown
M
N
Blue
Brown
Black
S7145
NOTES:
– Wires of min. 1 mm2section. (Unless requested oth-
erwise by local standards and legislation).
– The electrical wiring carried out by the installer must
be in compliance with the rules in force in the Country.
*(See page 5). Connect the automatic shut-off de-
vice (230V - 0.5A max.) to the clamps N - T2 of the
7 pin plug.
CONTROL BOX
■To remove the control-box from the burner, loosen screw (A, fig. 10)
after removing all components, the 7 pin plug and earth wire.
During the re-assembly of the control box, retighten the screw
(A) with a torque wrench setting of 1 – 1.2 Nm.
■For burners installed on air generators, remove the bridge (B, fig. 10)
from the control box.
M
~
TESTING:
Check the shut-down of the
burner by opening the thermo-
stats and the lock-out by
darkening the flame detector.
Fig. 10
E9070
B
A
Green led (Fan)
Yellow led (Heater)
Red led (Lock-out signalling due to failure to shut-down)

3193 7GB
4. BURNER OPERATION
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
CO2concentration 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), and they refer to 12.5% CO2
at sea level (1013 hPA) and with light oil and room temperature of 20 °C, with a combustion chamber pres-
sure of 0 mbar.
4.2 RECOMMENDED NOZZLES
Steinen type 60° H;
Danfoss type 60° H;
Delavan type 60° W.
4.3 PUMP PRESSURE
The pump leaves the factory set at 12 bar.
To change it act on pump pressure adjust screw (5, fig. 7, page 5).
TYPE
Nozzle Pump
pressure
Burner
output
Combustion head
adjustment
Air damper
adjustment
GPH Angle bar kg/h ± 4% Set-point Set-point
370T1
0.40 60° W 13 1.5 11.4
0.50 60° W 12 1.7 1.5 1
0.60 60° W 12 2.1 22.2
0.65 60° W 12 2.3 2.5 2
0.75 60° W 12 2.7 3 3
0.75 60° W 14 3.0 3.5 3.2
374T1
0.75 60° W 12 2.7 1.5 1.2
0.85 60° W 12 3.0 1.5 1.8
1.00 60° W 12 3.7 2 2
1.10 60° W 12 4.1 2.5 2.2
1.25 60° W 12 4.6 3.5 2.8
1.25 60° W 14 5.0 4 3
QUALIFIED PERSONNEL WITH THE RIGHT INSTRUMENTS MUST HANDLE THE BURNER'S FIRST
START-UP
!
WARNING
NOTE:
to achieve CLASS 3 (EN267:1999) emissions, hollow-cone
nozzles have been used.

3193 8GB
4.4 MAINTENANCE POSITION, (fig. 11)
Before performing maintenance on the burner, it is
best to disconnect the system’s power supply.
³Unscrew and remove the screw fastening it to the
flange to take the burner off the boiler.
³Hook the burner onto flange (7), loosen screws (5)
and pull off the blast tube assembly (4).
³Loosen screw (3, fig. 14 page 9) to remove the dif-
fuser disc support assembly (3) from nozzle-holder
assembly (1).
³Pull wires (2) out from electrodes.
³Replace nozzle (6) and screw the new one on prop-
erly, holding it as illustrated in figure 11.
³Refit following the above procedure in the reverse
order.
4.5 COMBUSTION HEAD SETTING, (fig. 13)
Combustion head adjustment varies depending on
burner delivery. To adjust, proceed as follows:
³Turn adjusting screw (2) clockwise or anticlockwise
until the notch on the regulating rod (3) is lined up with
the outer surface of the nozzle-holder assembly (1).
³In the example, the regulating rod (3) is set to setpoint
3. This means the burner is adjusted for an output of
2.7 kg/h with a pump pressure of 12 bar using a 0.75
GPH nozzle, as indicated in the reference table relat-
ing to burner type 370T1.
4.6 AIR DAMPER ADJUSTMENT
To adjust the air damper proceed as follows:
³Loosen nut (5, fig. 13) and set the valve by adjusting
the screw (4).
³When the adjustment is complete screw down nut (5).
Type 370T1 - BGK1
When the burner stops, the air damper closes automati-
cally until maximum negative flue pressure is 0.5 mbar.
Type 374T1 - BGK2
When the burner stops, the air damper stays open.
4
3
2
5
6 7
E9286
1
Fig. 11
D7291
Fig. 13 2
1
3
1
4 5
WARNING
In the event of maintenance
made to the diffuser disc-hold-
er assembly, screw the nut (A)
as shown in the figure 12.
A
TIGHTEN WITHOUT MOVING
BACKWARDS TO THE END
D5684
Fig. 12