Riello DB 6 LM C10 TC FS1 A0 T150 Quick start guide

Istruzioni per installazione, uso e manutenzione
Installation, use and maintenance instruction
Bruciatore industriali di olio
Oil industrial burner
Brûleur industriel à huile
20082652 (1) - 12/2013
CODICE - CODE MODELLO - MODELL TIPO - TYPE
20082532 DB 6 LM C10 TC FS1 A0 T150 82532X
I
GB
F

2
Index
CHAPTER 1 Introduction . . . . . . . . . . . . . . . . . . . . . page 3
Selection code description . . . . . . . . . . . . . . . . . . . . . . 3
Specification of the burner type and coding . . . . . . . . . . . . . 3
CHAPTER 2 Burner description. . . . . . . . . . . . . . . . . . . . . 4
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Firing rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Burner components . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Air side pressure drop . . . . . . . . . . . . . . . . . . . . . . . . 7
CHAPTER 3 Installation. . . . . . . . . . . . . . . . . . . . . . . . . 8
Removal of the locking screws from the shutter . . . . . . . . . . . 8
Fixing to the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Lifting points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CHAPTER 4 Fuel supply . . . . . . . . . . . . . . . . . . . . . . . . 9
General supply layout (oil and gas) . . . . . . . . . . . . . . . . . 9
Pressure regulator. . . . . . . . . . . . . . . . . . . . . . . . . . 10
Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CHAPTER 5 Preparation for start up . . . . . . . . . . . . . . . . . .11
Combustion head adjustment . . . . . . . . . . . . . . . . . . . . 11
Ignition pilot . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Servomotor adjustment . . . . . . . . . . . . . . . . . . . . . . . 12
Pressure switches adjustment. . . . . . . . . . . . . . . . . . . . 12
Nozzles (mechanical atomisation) . . . . . . . . . . . . . . . . . 13
CHAPTER 6 Burner start up and adjustment . . . . . . . . . . . . . .14
Air/fuel adjustment
(oil version/mechanic atomisation). . . . . . . . . . . . . . . . . 14
Pressure switches setting . . . . . . . . . . . . . . . . . . . . . . 15
Final checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
CHAPTER 7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . .16
Checking the flame detector . . . . . . . . . . . . . . . . . . . . 16
Periodic checks . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Problems and remedies . . . . . . . . . . . . . . . . . . . . . . . 17

3
1Introduction
1.1 Selection code description 1.2 Specification of the burner type and
coding
DB 6 L TC A-0
supply
A-0 = from below
A-90 = from the right
Combustion head
TC = standard head
Fuel
S= natural gas
P= LPG
Adjustment
E= electronic cam
Dimension
Series
N= fuel oil
NS = fuel oil / natural gas
NP = fuel oil / LPG
NA = fuel oil assisted atomisation
L= light oil
TL = long head
Combustive air
NAP = fuel oil assisted atomisation / LPG
M= progressive (modulating, mechanical cam)
LS = light oil / natural gas
LP = light oil / LPG
NAS = fuel oil assisted atomisation / natural gas
TXL = special head
A-180 = from above
A-270 = from the left
9 - 12
MTYPE CODE
DB 6 LM TC A0 20082532

4
2Burner description
2.1 Technical data
2.2 Firing rate
Model DB 6
Capacity Min./Max. light oil [kW] 4200 ÷ 7800
Output adjustment Modulating
Modulation ratio against maxi-
mum rated output
Light oil 1 : 4
Fuel Light oil/Fuel oil viscosity 5°E at 50°C option L
Combustive air temperature Max. 150°C
Electrical supply 230 V +/-10% 50/60 Hz
110 V +/-10% 50/60 Hz (on request)
Ignition Electrogas type (pilot burner with natural gas or LPG)
Ignition transformer V1 - V2
l1 - l2
230 V - 2 x 5 kV
1.4 A - 20 mA
Flame control Standard (1 stop in 24 hours) FS1
Continuous self-check (on request) FS2
Fig. 1
D7889
GAS
0
50°C
150°C
800 1800
kW
Air temperature
DB6
7800
7000
Air temperature

5
CHAPTER 2Burner description
2.3 Burner components
Key
1Electrical control box base for electrical connections
2Air box
3Cover with handle
4Photocell QRA2
5Tie-rod for combustion head modulation
6Air delivery adjustment cam
7Servomotor
8Air pipe attachment flange
9Air pressure switch
10 Flame inspection window
11 Combustion head
12 Boiler attachment
13 Maximum oil pressure switch on return line
14 Eccentric
15 Safety valve in outlet VS
16 Safety valve in outlet VF
17 Safety valve on the return VR
18 Oil pressure gauge in outlet nozzle
19 Oil pressure gauge on the nozzle return
Fig. 2
20082848

6
CHAPTER 2Burner description
2.4 Overall dimensions
Air duct connection
Fig. 4 Fig. 5
FLANGE DIMENSIONS
Fixing to the boiler
D7549
45
45
453
M18
350
D7884
Fig. 3
20082849
380
495

7
CHAPTER 2Burner description
2.5 Air side pressure drop (taken upstream from the completely open air damper)
The pressure curves refer to the different adjustment conditions for the combustion head. Refer to Paragraph 5.1
InIn the case of air supply at a higher temperature than 20°C and/or an altitude higher than 100 m. a.s.l., the pressure drop in the
head that is shown in the graph must be multiplied by the Kccoefficient as indicated in the table below.
Example
Burnt output = 9800 kW - Altitude = 750 m. a.s.l. - Combustive air temperature = 120 °C
From the diagram (curve 3), with an output of 9800 kW, a total pressure drop (head + air damper) is shown of: 'p20 = 35 mbar
(combustive air at 20 °C and altitude 100 m. a.s.l.).
The table gives a multiplying coefficient, for combustive air at 120 °C and altitude 750 m. a.s.l., equal to Kc= 1.449.
The total pressure drop of the burner head is:
'p= 'p20 x Kc= 35 x 1.449 = 50.7 mbar.
Altitude Kc
Air temperature °C
m. a.s.l. 0 20 30 40 50 60 70 80 90 100 120 140 150
0 0..920 0.988 1.021 1.055 1.089 1.122 1.156 1.190 1.223 1.257 1.325 1.392 1.426
100 0.932 1.000 1.034 1.069 1.103 1.137 1.171 1.205 1.239 1.273 1.342 1.410 1.444
500 0.976 1.047 1.083 1.119 1.155 1.190 1.226 1.262 1.298 1.333 1.405 1.477 1.512
750 1.007 1.080 1.117 1.154 1.191 1.228 1.265 1.302 1.338 1.375 1.449 1.523 1.560
1000 1.038 1.114 1.152 1.190 1.228 1.266 1.304 1.342 1.380 1.418 1.494 1.570 1.608
1250 1.069 1.147 1.186 1.226 1.265 1.304 1.343 1.382 1.421 1.460 1.539 1.617 1.656
1500 1.102 1.182 1.223 1.263 1.304 1.344 1.384 1.425 1.465 1.505 1.586 1.667 1.707
1750 1.130 1.213 1.254 1.295 1.337 1.378 1.419 1.461 1.502 1.544 1.626 1.709 1.751
2000 1.174 1.260 1.303 1.346 1.389 1.432 1.475 1.518 1.561 1.604 1.690 1.776 1.819
2250 1.206 1.294 1.338 1.382 1.427 1.471 1.515 1.559 1.603 1.647 1.736 1.824 1.868
2500 1.251 1.343 1.389 1.434 1.480 1.526 1.572 1.618 1.664 1.709 1.801 1.893 1.939
2750 1.284 1.378 1.425 1.472 1.519 1.566 1.613 1.660 1.707 1.754 1.848 1.942 1.989
3000 1.320 1.417 1.465 1.514 1.562 1.610 1.659 1.707 1.755 1.804 1.901 1.997 2.046
60
50
40
30
20
10
mbar
KW
DB6
0 1000 2000 3000 4000 5000 6000 7000 8000
D7890
Fig. 6
'p
Burner output Pb [kW]

8
3Installation
3.1 Removal of the locking screws from the
the shutter
3.2 Fixing to the boiler
3.3 Lifting points
To move the burner, the attachment points indicated in Fig. 9 should be used.
All the installation, maintenance and disassembly
operations must be carried out with the electricity
supply disconnected.
The installation of the burner must be carried out by
qualified personnel, as indicated in this manual and in
compliance with the standards and regulations of the
laws in force.
Remove the screws and the nuts 1) and 2) (Fig. 7),
before installing the burner on the boiler. Replace them
with the screws 3) M12 X 16 supplied with the burner.
1
2
1
2
3
3
Fig. 7
D12015
DANGER
WARNING
WARNING
The figure alongside shows how to fix the burner to a boiler without a
cooled frontal. The head should not jut out more than 200 mm.
In any case, the fettled wall should not extend beyond the end of the
burner combustion head.
REFRATTARI O
500MAX
363 / 312
380 / 350
D8401
Fig. 8
Refractory
Fig. 9
20082850

9
4Fuel supply
4.1 General supply layout (oil and gas)
Key AD Air dumper CAnti-vibration joint Cm Regulating cam GF Gas filter HPG High gas pressure regulator LPG Low gas pressure regulator MM Pressure gauge MN Oil delivery pressure gauge MR Oil return pressure gauge NNozzle
NL Oil lance PA Minimum air pressure switch PCV Gas pressure regulator PGM Maximum gas pressure switch PGm Minimum gas pressure switch PO Maximum oil pressure switch RG Gas butterfly valve RP Oil return pressure regulator SM Servomotor SRV Pressure limiting valve with outlet into the
environment
VE Fan VF Oil safety solenoid valve
VPS Leak detection control device VR Gas pressure regulator solenoid valve VR Safety solenoid valve on the nozzle return VRS Safety solenoid valve on the nozzle return VSG Gas safety solenoid valve VSN Heavy oil safety solenoid valve VS Oil valve (safety)
M
Fig. 10
D10017
max. 500 mbar 0,5 - 4 mbar
Heavy oil pre-heater

10
CHAPTER 4Burner description
4.2 Pressure regulator
To calibrate cam (1): remove the gear-case, loosen screws (2), act on screw (3) until required eccentricity is obtained.
Turning the screw (3) to the left (+sign) eccentricity is increased, thus increasing the difference between nozzle maximum and min-
imum delivery.
Turning screw (3) to the right (- sign) eccentricity is reduced; thereby reducing the difference between nozzle maximum and min-
imum delivery.
Every variation of the eccentricity may require a travel offset using nut and locknut (4).
NB.
- To obtain a correct calibration, cam (1) must operate over the travel range of the servo-motor as wider as possible; every vari-
ation of the servo-motor must be matched by a variation in pressure.
- Never give the variator piston a snug fit: stop ring determines the maximum travel.
- When the adjustment has been made, manually check that there is knocking between maximum and minimum and that max.
and min. pressures match pre-selected values as indicated on the delivery nozzle diagram.
If, at maximum nozzle delivery (maximum return pressure), pressure oscillations are detected on pressure gauge (6), slightly
reduce pressure until the oscillations are eliminated.
4.3 Wiring diagrams
D8416
6
5
4
1
2
3
Fig. 11
MB Burner terminal strip
PA Air pressure switch
PO Maximum oil pressure switch
SM Servomotor
TA Ignition transformer
TB Burner earth
UV UV cell
VF Operation valve
VR Oil return valve
VS Oil safety valve
D8403
Fig. 12