Riello Burners RLS 300/E MX User manual

TS0070UK01
RLS/E-EV MX SERIES
RLS 300/E MX 600/1250 ÷3550 kW
RLS 400/E MX 800/1800 ÷4300 kW
RLS 300/EV MX 600/1250 ÷3550 kW
RLS 400/EV MX 800/1800 ÷4300 kW
RLS/E-EV MX series burners are characterised by a modular monoblock structure that
means all necessary components can be combined in a single unit thus making installation
easier, faster and, above all, more flexible.
The series covers a firing range from 600 to 4300 kW, and they have been designed for
use in hot water boilers, overheated water boilers as well as steamboilers. Operation can
be “two stage progressive” or alternative “modulating” with the installation of a PID logic
regulator. The burner can, therefore, supply with precision the demanded power, guaranteeing
an high efficiency system level and the stability setting, obtaining fuel consumption and
operating costs reduction.
The innovative combustion head, adjustment system ensures perfect movement during
modulation as well as reducing noise and pollutants.
LOW NOx DUAL FUEL BURNERS

TECHNICAL DATA
Approval Fuel / air dataElectrical data
Emissions
600/1250÷3550 800/1800÷4300 600/1250÷3550 800/1800÷4300
516/1075÷3053 688/1548÷3698 516/1075÷3053 688/1548÷3698
50/105÷299 67/151÷362 50/105÷299 67/151÷362
60/125-355 80/180÷430 60/125-355 80/180÷430
70/145-412 93/209÷500 70/145-412 93/209÷500
included in LMV51 included in LMV51 included in LMV52 included in LMV52
6,5 9,5 6,5 9,5
4,5 7,5 4,5 7,5
9,1-15,8 17,5 - 30 9,1-15,8 17,5 - 30
51-86 113 - 195 51-86 113 - 195
83 85 83 85
CE in progress CE in progress -- --
two stages progressive/modulating
1 ÷4
SQM 48 (OIL and GAS)
0/60
11,86
0,82
4-6
TA4
870 (20 bar)
25
50
NO
10
0,71
8,6
0,78
--
--
--
reverse blade fan wheels
60
3/50/400 (±10%)
1/50/430 (±10%)
2
--
54
1,5
3,7
7xIn
54
54
N.A.
230 V - 2 x 5 kW
1,9 A - 35 mA
Intermittent (at least 1 stop every 24 h) or Continuous (at least 1 stop every 72 h)
N.A.
< 10
< 2
< 2
< 185
< 10
< 80
90/396 - 89/336 - 73/23 EEC
EN 267 - EN 676
Since the Company is constantly engaged in the production improvement, the aesthetic and dimensional features,
the technical data, the equipment and the accessories can be changed.
This document contains confidential and proprietary information of RIELLO S.p.A. Unless authorised, this information
shall not be divulged, nor duplicated in whole or in part.
Reference conditions: Temperature: 20°C - Pressure: 1000 mbar - Altitude: 100 m a.s.l. - Noise measured at a distance of 1 meter.
RLS 400/E MXRLS 300/E MX RLS 400/EV MXRLS 300/EV MX
2
type
s
kW
Mcal/h
°C min./max.
kWh/kg
kg/l
mm2/s (cSt)
kg/h
type
kg/h
bar
max. °C
kWh/Nm3
kg/Nm3
Nm3/h
kWh/Nm3
kg/Nm3
Nm3/h
kWh/Nm3
kg/Nm3
Nm3/h
type
max °C
Ph/Hz/V
Ph/Hz/V
type
kW
kW
kW
IP
kW
A
A
IP
kW
A
A
IP
type
V1 - V2
I1 - I2
dB (A)
W
mg/kWh
N°Bacharach
mg/kWh
mg/kWh
mg/kWh
mg/kWh
Model
Burner operation mode
Modulation ratio at max. output
Servomotor
run time
Heat output
Working temperature
net calorific value
Light Oil density
viscosity at 20°C
delivery
Pump delivery
Atomised pressure
Fuel temperature
Fuel pre-heater
net calorific value
G20 density
gas delivery
net calorific value
G25 density
gas delivery
net calorific value
LPG density
gas delivery
Fan
Air temperature
Electrical supply
Auxiliary electrical supply
Control box
Total electrical power
Auxiliary electrical power
Heaters electrical power
Protection level
Pump motor electrical power
Rated pump motor current
Pump motor start up current
Pump motor protection level
Fan motor electrical power
Rated fan motor current
Fan motor start up current
Fan motor protection level
Ignition transformer
Working
Sound pressure
Sound power
CO emission
Light Oil grade of smoke indicator
CxHy emission
NOx emission
G20 CO emission
NOx emission
Directive
Conforming to
Certification

FIRING RATES
Test conditions conforming to EN 676:
Temperature: 20°C
Pressure: 1000 mbar
Altitude: 100 m a.s.l.
0
4
8
12
10
6
2
14
18
16
0
0
40
80
120
100
60
20
140
180
160
RLS 300/ E-EV MX RLS 400/
E-EV MX
hPa (mbar) mm H
2
O
3
Mcal/h
15001000500 2000 2500 3000 3500 4000 4500
kW
500 1000
0
1500 2000 2500 3000 3500 4000 4500 5000
1 9
1 9 0
Useful working field for choosing the burner
Modulation range

The burners are fitted with a butterfly valve to regulate the fuel, controlled by the main management
module of burner through a high precision
servomotor.
Fuel can be supplied either from the right or
left sides, on the basis of the application
requirements.
A maximum gas pressure switch stops the
burner in case of excess pressure in the fuel
line.
The gas train can be selected to best fit system
requirements depending on the fuel output and
pressure in the supply line.
The gas trains are “Multibloc” and “Composed”
type (assembly of the single components)
without seal control. This function is included
in the burner management module.
GAS TRAIN
FUEL SUPPLY
Gas input pipework
Manual valve
Anti-vibration joint
Pressure gauge with pushbutton cock
Filter
Pressure regulator (vertical)
Minimum gas pressure switch
VS safety solenoid (vertical)
VR regulation solenoid (vertical)
Two settings: - firing output (rapid opening)
- maximum output (slow opening)
Gasket and flange supplied with the burner
Gas adjustment butterfly valve
Burner
Gas train-burner adapter
Maximum gas pressure switch
Combustion head pressure
Pressure downstream from the regulator
Pressure upstream from the filter
Gas train supplied separately, with the code given in the table
Installer’s responsibility
1
2
3
4
5
6
7
8
9
10
11
12
14
15
P1
P2
P3
L
L1
MULTIBLOC gas train type MBC 1200
COMPOSED gas train type MBC 1900-3100-5000
LL1
Example of the RLS/E MX gas adjustment butterfly valve.
12
12
4
P1
15 11
10
14 6
LL1
98
7
5
4
P3
P2
321
P1
15 11
10
14 968
7
5
4
P3
P2
321

COMPOSED
GAS TRAINS
MULTIBLOC
GAS TRAINS
Y
ZX
Øo
Y
ZX
Øi
Øo
Name
MBC 1200 SE 50
MBC 1900 SE 65 FC
MBC 3100 SE 80 FC
MBC 5000 SE 100 FC
Code
3970221
3970222
3970223
3970224
Ø i
2”
DN 65
DN 80
DN 100
X mm
573
583
633
733
Y mm
161
237
240
350
Z mm
425
430
500
576
Ø o
2”
DN 65
DN 80
DN 100
Example of gas train
“COMPOSED” type
without seal control
Example of gas train
“MULTIBLOC” type
without seal control
Øi
Gas trains are approved by standard EN 676 together with the burner.
The overall dimensions of the gas train depends on how they are constructed. The following table
shows the maximum dimensions of the gas trains that can be fitted to RLS 300-400/E-EV MX burners,
intake and outlet diameters.
The maximum gas pressure of gas train “Multibloc” type is 360 mbar, and that one of gas train
“Composed” type is 500 mbar.
MULTIBLOC guarantees a range of pressure towards the burner from 3 to 60 mbar. For version DN
65 and DN 80 is from 20 to 40 mbar. The range of pressure in the MULTIBLOC with flange can be
modified choosing the stabiliser spring (see gas train accessory).
5

PRESSURE DROP DIAGRAM
RLS 300/E-EV MX
RLS 400/E-EV MX
The diagrams indicate the minimum pressure drop of the burners with the various gas trains that
can be matched with them; at the value of these pressure drop add the combustion chamber pressure.
The value thus calculated represents the minimum required input pressure to the gas train.
NATURAL GAS
note
Please contact the Riello Burner Technical Office for different pressure levels from those above
indicated and refer to the technical manual for the correct choice of the spring.
MBC 1200 gas train: the minimum operating pressure (*) is higher or equal to 10 mbar.
The gas train has to be installed next to the burner (if needed, only with the adapters listed in
the catalogue) and it has to operate in its own working field.
MBC 1900-3100-5000 gas train: the minimum operating pressure (*) is higher or equal to
15 mbar. The gas train has to be installed next to the burner (if needed, with the adapters listed
in the catalogue) and it has to operate in its own working field.
(*) it is the upstream gas train pressure in full load operation conditions.
Gas train
MBC 1200 SE 50
MBC 1900 SE 65 FC
MBC 3100 SE 80 FC
MBC 5000 SE 100 FC
Code
3970221
3970222
3970223
3970224
Adapter
3000826 ( I )
3010221 ( I )
3010222 ( I )
3970223 ( I )
Seal Control
(*)
(*)
(*)
(*)
Gas train
MBC 1200 SE 50
MBC 1900 SE 65 FC
MBC 3100 SE 80 FC
MBC 5000 SE 100 FC
Code
3970221
3970222
3970223
3970224
Adapter
3000826 ( I )
3010221 ( I )
3010222 ( I )
3970223 ( I )
Seal Control
(*)
(*)
(*)
(*)
(*) The seal control is managed by the control box LMV51/LMV52.
(*) The seal control is managed by the control box LMV51/LMV52.
mbar
Δ P
Combustion head and gas train Combustion head
Pressure drop
mbar
Δ P
Combustion head and gas train Combustion head
Pressure drop
Mcal/h
10
20
0
G25G20
0
30
40
50
60
70
80
90
20
40
60
80
100
120
140
160
180
200
220
240
260
280
MBC SE 1900
MBC SE 3100
MBC SE 1200
3000 35001500 25002000500 1000
kW2500 350030002000 4000500 1000 15000
0
100
G25G20
6
MBC SE 5000
Mcal/h
kW2500 350030002000 4000 4500
3000 400035001500 25002000
500 1000 1500
500 1000
20
40
00
60
80
100
120
140
20
40
60
80
100
120
140
160
180
200
MBC SE 1900
MBC SE 3100
MBC SE 1200
MBC SE 5000

0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 1234510620
50 60 10080 200 400 800 1000600
3
6
9
12
15
22
30 45 61 76 95 122 152
V
1234567810
20 30 40
1,4
1/2
3/4
1"
1" 1/2
6"
1" 1/4
4"
3"
2" 1/2
2"
PRESSURE DROP (mbar)
PIPE DIAMETER
PIPE LENGTH (m)
= G as output N mc /h
1 - G20
= 0,62 - G25
1,18 - G31
{
f
V
15,34
7
Figure A
The following diagram enables pressure drop in a pre-existing gas line to be calculated and to select the
correct gas train.
The diagram can also be used to select a new gas line when fuel output and pipe length are known. The
pipe diameter is selected on the basis of the desired pressure drop. The diagram uses methane gas as
reference; if another gas is used, conversion coefficient and a simple formula (on the diagram) transform
the gas output to a methane equivalent (refer to figure A). Please note that the gas train dimensions must
take into account the back pressure of the combustion chamber during operations.
Control of the pressure drop in an existing gas line or selecting a new gas supply line.
The methane output equivalent is determined by the formula fig. A on the diagram and the conversion
coefficient.
Once the equivalent output has been determined on the delivery scale ( ), shown at the top of the
diagram, move vertically downwards until you cross the line that represents the pipe diameter; at this
point, move horizontally to the left until you meet the line that represents the pipe length.
Once this point is established you can verify, by moving vertically downwards, the pipe pressure drop
of on the botton scale below (mbar).
By subtracting this value from the pressure measured on the gas meter, the correct pressure value will
be found for the choice of gas train.
Example: - gas used G25
- gas output 9.51 mc/h
- pressure at the gas meter 20 mbar
- gas line length 15 m
- conversion coefficient 0.62 (see figure A)
- equivalent methane output = 9.51 = 15.34 mc/h
0.62
- once the value of 15.34 has been identified on the output scale ( ), moving vertically downwards you
cross the line that represents 1" 1/4 (the chosen diameter for the piping);
- from this point, move horizontally to the left until you meet the line that represents the length of 15 m
of the piping;
- move vertically downwards to determine a value of 1.4 mbar in the pressure drop botton scale;
- subtract the determined pressure drop from the meter pressure, the correct pressure level will be found
for the choice of gas train;
- correct pressure = ( 20-1.4 ) = 18.6 mbar
V
V
V
SELECTING THE FUEL SUPPLY LINES

HYDRAULIC CIRCUIT
EN 267 > 100 Kg/h (TRD 604, NBN)
The hydraulic circuit of the RLS/E-EV MX series of burners
is characterised by a fuel pump with an independent
motor.
The burners are fitted with two valves (a safety valve
and an operation valve) and an oil filter along the oil
line from the pump to the nozzle.
A pressure regulator on the return circuit from the nozzle
enables the quantity of fuel burnt to be varied.
Two safety valves on the return circuit avoid oil leakage
from the nozzle when the burner is in stand-by and
prepurge phase.
The models are fitted with a maximum pressure switch
on the oil return circuit, and a minimum oil pressure
switch on the oil line from the pump to the nozzle.
The burner is suitable for continuous operation.
Example of the RLS/E-EV MX burner hydraulic circuit
P
PO min
VF
VS
MM
NL
U
AT
MR
SM
RO
PO max
VR
VR1
Pump with filter and pressure regulator
Min. oil pressure switch on the delivery circuit
Operating valve
Safety valve on the delivery circuit
Pressure gauge on the delivery circuit
Nozzle pipe
Nozzle
Actuator for opening and closing the nozzle needle
Pressure gauge on the return circuit
Servomotor
Pressure regulator on the return circuit
Max. oil pressure switch on the return circuit
Safety valve on the return circuit
Safety valve on the return circuit
P
VS
POmax RO
SM
VR
MR
POmin
U
NL
VF
VR1
M
MM
8

The fuel feed must be completed with the safety devices required by the local norms.
The table shows the choice of piping diameter, depending on the difference in height between the
burner and the tank and their distance.
With ring distribution oil systems, the feasible drawings and dimensioning are the responsibility
of specialised engineering studios, who must check compatibility with the requirements and
features of each single installation.
note
Model
Diameter piping
+H, -H (m)
+2,0
+1,5
+1,0
+0,5
0
-0,5
-1,0
-1,5
-2,0
-3,0
Ø1/2”
Lmax (m)
25
23
20
18
15
12
10
8
5
3
Ø 3/4”
Lmax (m)
85
80
70
65
60
50
45
35
30
15
H
Ø
P
V
1
2
3
4
5
6
7
8
9
10
7
10
95 V
P
+H
-H
8
1
4
10 cm 2
5
73
9
6
6
MAXIMUM EQUIVALENT LENGTH FOR THE PIPING L[m]
Difference in height pump-foot valve
Internal pipe diameter
Max. height 10 m
Height 4 m
Burner
Burner pump
Filter
Manual shut off valve
Suction pipework
Bottom valve
Remote controlled rapid manual
shut off valve
(compulsory in Italy)
Type approved shut off solenoid valve
(compulsory in Italy)
Return pipework
Check valve
RLS/E-EV MX
9
SELECTING THE FUEL SUPPLY LINES

The ventilation unit comes with
a sound proofing radial
regulating system.
All the burners in the RLS/E-EV
MX
series are fitted with fans
with reverse curve blades, which give excellent performance
and are fitted in line with the combustion head. The air flow
and sound-deadening materials used in the construction are
designed to reduce sound emissions to the minimum and
guarantee high levels of performance in terms of output and
air pressure.
A high precision servomotor through the main management
module installed on each burner of RLS/E-EV MX series,
controls the air dampers position constantly, guaranteeing
an optimal fuel-air mix.
COMBUSTION HEAD
VENTILATION
The innovative combustion
head adjustment system
ensures perfect movement
during modulation as well as
reducing noise and pollutants.
Simple adjustment of the combustion head allows to adapt
internal geometry of the head to the output of the burner.
The same adjustment servomotor for the air damper also
varies, depending on the required output, the setting of
the combustion head, through a simple lever.
This system guarantees excellent mix on all firing rates
range.
Flame dimensions
Example:
Burner thermal output = 3500 kW;
L
flame (m) = 3,5 m (medium value);
D
flame (m) = 1,5 m (medium value).
D
L
Burner output (MW)
02
3
5
1
13
2
4
6
7
4 5678 910
Flame length (m)
Flame diameter (m)
0
4
0
0,5
1
1,5
2
2,5
3
3,5
L
max
L
min
D
max
Dmin
10
Example of a RLS/E MX burner combustion head
Example of a sound proofing radial regulating system

Each RLS/E-EV MX series burner is equipped with an electronic
microprocessor management panel, which controls the air damper
servomotor as well the fuel servomotors.
Hysteresis is prevented by the precise control of the two servomotors
and the software link by can - bus.
The high precision regulation is due to the absence of mechanical
clearance normally found in mechanical regulation cams on traditional
modulating burners. For the burner commissioning it is necessary
to use the AZL unit display. It must be ordered separately for /E
models, while for /EV models it is included.
In the RLS/E series burner the standard working is two stage
progressive and the PID regulator, to control the boiler temperature
or pressure, is available as accessories.
In the RLS/EV series burner the PID regulator to control the boiler
temperature or pressure is included in LMV52.The burner can work
for a long time on intermediate output settings (see picture A).
In the RLS/EV series variable
speed drive control (VDS) and Oxygen control are obtained by
installation of a special kit. The display operating unit (AZL) is
already on board.
The display and operating unit (AZL) shows all operational
parameters in real time, so as to keep a constant check on the
burner:
- servomotor angle
- required set-point and actual set-point
- fuel consumption (RLS/EV)
- smoke and environmental temperature (RLS/EV)
-O
2value (RLS/EV)
- error checking, self diagnostic fault analysis.
ADJUSTMENT
BURNER OPERATION MODE
Control box management table
Function
Intermittent operation
Continuos operation
Intermittent operation flame detector
Continuos operation flame detector
Numbers of regulating stepper actuators
Variable Speed Drive (VSD)
Input O2probe
Built in O2regulator
Single fuel operation
Double fuel operation (different timing for oil and gas)
Gas valve proving system
Built in temperature pressure PID regulator
External analog modulation
Analog 4÷20 mA output load signal
Efficency Indication
External e-Bus Interface (AZL)
Commissioning PC Interface (AZL)
Commissioning Interface Display (AZL)
LMV 51 LMV 52
Control box management version table
LMV 51
LMV 52
RLS/E
version
RLS/EV
version
11
Main management module for
RLS/E-EV MX series
Output
Picture A
Checked Variable
bar
°C
MAX
MIN
time
time
“Modulating” operation
Included in supply
As accessory
Ionisation Probe
Ionisation Probe /
Infrared Detector
Ionisation Probe
45
--
--
--
on demand
--
Ionisation Probe /
Infrared Detector

Example of burner management system in dual fuel burner configuration
Burner management system
The new electronic cam is a microprocessor based burner management system with matching system
components for the control and supervision of forced draft burners.
The system components are interconnected via a bus system.
Communication between the individual bus users takes place via a reliable system-based data bus.
All safety-related digital outputs of the system are permanently monitored via e contact feedback
network.
12
Fan speed control (on demand)
The inverter device fitted to the RLS/EV series burner acts on the electrical supply frequency of the
fan motor to adjust the air flow through the motor speed variation.
The main advantages of speed control:
- lower sound emissions
- electric power saving.
The fan motor supplies just the necessary air
flow, thus reducing sound emissions and
avoiding energy loss due to the air damper
regulation mechanism. The inverter technology
can save up to 35% of the energy costs.
A safety device to verify the correct speed of
the motor is mounted on the air suction circuit
of the burner.
10 20 30 40 50 60 70 80 90 100
Heat output (%)
Electrical power consumption kW
Elec
tric
alp
o
w
e
r
c
onsu
m
pti
on
o
ft
h
e
f
a
n
m
o
t
orwithIn
v
er
te
r
Electrical
powerco
nsumpti
onofthe
fanm
otorwi
thair
dam
pe
ra
djust
ing
35% energy
saving

CAN-Bus
LMV51-52
Stepper actuators 3 / 20 / 35 Nm
AZL display and
operating unit Interface
with BMS & PC-Tool
QGO2
Sensor
CAN-Bus
Variable Speed
Drive VSD
IONISATION / QRI
Continuos Operation
Electronic Cam Platform
QRB
Intermittent
Operation
Features:
Multifuel Burners
Burner Control
Valves Seal Control
Electronic Cam
O2 Regulation
Speed Regulation
Optional Regulator
5 IP54 servomotors
Fuel meter
Output/Efficiency digital signal
RLS 300-400/E-EV MX
time (s)
1 - Closing thermostat
2 - Closing thermostat
3 - Fan motor working
4 - Ignition transformer
5 - Valves open
6 - Actuators
7 - Flame max. - min.
0
1
2
3
4
5
6
7
13
START UP CYCLE

OUTPUT INPUT CONNECTIONS
WIRING DIAGRAMS
Electrical connections must be
made by qualified and skilled
personnel, according to the
local norms.
Example of the terminal board
for electrical connections
THREE PHASE SUPPLY TO THE POWER CIRCUIT AND GAS TRAINS CONNECTIONS
RLS 300-400/E-EV MX
X1
RS
(1)
(2)
- Main supply terminal strip
- Remote lock-out reset button
- Available for oil circuit external interlock
- Available for gas circuit external interlock
L1 L2 L3 N PE
-X1
L
F
L1 L2 L3 N PE
3N ~ 400/230V 50Hz
-Y
-X1
NP1 P2(2) (3) PE
VS VR
-PGMin -PGVP
N V1 V2 P P
V1
N
V2
PE P1 P2
PVP PVP
PVP PVP
12
3
12
3
PP
Triggering / Safety devices
-X1
-TS -TL
TS1 TS2 TL1 TL2 XG1 XG2 X01 X02
P ϑP ϑ
(1) (2)
14
Fuel remote selector
OIL
GAS
FUEL EXTERNAL SELECTOR
NO NO
NO NO
OIL
COM
GAS
Indicators / Ancillaries
RS2RS1 3241
Oil operation
7685
Gas operation Burner lock out Flame alight - GAS
-RS
910
Flame alight - OIL
Reset
-X1
Gas valve + PVP leak detection
-X1

INPUT CONNECTIONS
FOR RLS 300-400/E MX
FOR RLS 300-400/EV MX
Two stage progressive position
-X1
-TR
I Stage II Stage
T6 T7 T8
P ϑ
NC NO
C
-X1 -X1
-BP1
BN GN WH
0 / 10V
QBE620-P……
X61.1
X61.2
X61.4
X61.FE
PE
PE12
4…20mA
X61.1
X61.2
X61.FE
Pt 100
X60.1 X60.2 X60.4
X60.FE
WH WH RD RD
15
Power regulation with 3-position contact
-X1
X60.1 X60.2 X60.3 X60.4
X60.FE
-BT3
+BC
-BT5
+BC
-BA
+BC
-BV
+BC
X61.1 X61.2 X61.3 X61.4
X61.FE
Possibility of probe input
ϑ
Pt 100
ϑ
Pt /LG Ni 1000
TEMPERATURE /PRESSURE INPUT
TEMPERATURE /PRESSURE INPUT
POWER
SUPPLY OUTPUT REFERANCE GROUND
POWER
SUPPLY OUTPUT
4...20 mA
REFERANCE
GROUND
0
0
Possibility of Riello probe input
INPUT WITH QBE620-P………
-BP
+BC
-BT4
+BC
ϑ

OUTPUT CONNECTIONS
FOR RLS 300-400/EV MX
FOR RLS 300-400/EV MX
16
-BV1
+BC
-BA1
+BC
-X1
X62.1 X62.2 X62.3 X62.4
X62.FE
Possibility of setpoint input and setpoint shift
0...10V
SET POINT
OUTPUT REFERANCE
GROUND
4...20 mA
SET POINT
OUTPUT REFERANCE
GROUND
Possibility of external modulation
-X1
-BV2
+BC
-BA3
+BC
2...10V
EXTERNAL MODULATION
OUTPUT REFERANCE
GROUND
4...20 mA
EXTERNAL MODULATION
OUTPUT REFERANCE
GROUND
X62.1 X62.2 X62.3 X62.3
X63.FE
Output for load indicator
-BA2
+BC
-X1
X63.1 X63.2
X63.FE
4...20 mA
LOAD INDICATOR
INPUT REFERANCE
GROUND

OPTIONAL CONNECTION
Note: for others probe input ask Riello techical dept
RWF40 power controller
FOR RLS 300-400/E MX WITH RWF40 POWER CONTROL KIT
Possibility of setpoint input and setpoint shift
RWF 40 (High version)
-X1
-+
17
-X2
-B1
+MB
TE
L1
N
Q13 Q14
Q
Y1 Y2
I1
M1
G1+
U1
X1+
X1-
M6
XB6
XU6
G+
G-
CA
CB
CG
D1 D2
GND
B9
M9
PE
L
N
Q13 Q14
Q
Y1 Y2
I1
M1
G1+
U1
X1+
X1-
M6
XB6
XU6
G+
G-
CA
CB
CG
D1 D2
GND
B9
M9
RWF40.......
Possibility of probe input
0 - 20mA 4 - 20mA DC
I1
M1
Current probe output
0 - 1V 0 - 10V DC
Voltage probe output
-BA BV
-BT1
Thermocouple
I1
M1
U1
M1
Possibility of Riello probe input only and
with kit RWF40
ϑ
PE
Pt 100
-BT4
+BC
RD
WH
-X1
RD
WH
M1
G1+
M1
I1
G-
G+
I1
-BP
+BC
2PE
1
4...20mA
-BR
-BA1 -BV1
0 - 20mA 4 - 20mA DC
M6
XB6
0 - 1V 0 - 10V DC
Resistance Potentiometer
XB6
M6
Current input Voltage input
XU6
M6
-X2
-BTEXT
Climatic compensation
M9
B9
ϑ
Outside Temperature
-X1
-BT2 -BT3
ϑϑ
G1+
M1
G1+
M1
I1
Resistance Thermometer in
2-wire circuit Resistance Thermometer in 3-wire circuit
-X1
-BP1
U1
G+
G-
M1
WH BN GN
QBE620-P……
0/10V
-X2
CA CB CG
Optional
RxDTxD + RxDTxD - GND
Serial Interface RS485

VARIABLE SPEED DRIVE CONNECTIONS
FOR RLS 300-400/EV MX
OXYGEN CONTROL KIT CONNECTIONS
FOR RLS 300-400/EV MX
BA - DC input 0...20 mA, 4...20 mA
BA1 - DC input 0...20 mA, 4...20 mA for modifying the
remote setpoint
BA2 - Load indicator
BA3 - DC dispositive for the external modulation output 4...20 mA
B1 - RWF 40 power controller
BP - Pressure probe
BP1 - Pressure probe
BR - Potentiometer for modifying the set point
BT1 - Thermocouple probe
BT2 - Probe PT 100 with 2 wires
BT3 - Probe Pt100 with 3 wires
BT4 - Probe Pt100 with 3 wires
BT5 - PT/LG-Ni1000 probe
BTEXT - External probe for the climatic compensation of
the remote setpoint
BV - DC voltage input 0...1 V, 0...10 V
BV1 - DC voltage input 0...1 V, 0...10 V for modifying
the remote setpoint
BV2 - DC voltage input 2...10V
GF - Variable speed drive
G10 - O2sensor, OGO20.. type
G20 - Flue gases air temperature control probe
G30 - Air temperature control probe
MV - Fan motor
PGMin - Minimum gas pressure switch
PGVP - Gas pressure switch for leak detection control device
RS - Remote lock-out reset button
TL - Load limit remote control system
TR - High-low mode load remote control system
TS - Safety control device system
X1 - Main sypply terminal strip
X2 - RWF 40 power controller terminal strip
Y- Gas adjustment valve + gas safety valve
The following table shows the supply lead sections and the type of fuse to be used.
Table A
RLS 300/E MX
16 aM
4
25 aM
6
Model
A
mm2
F
L
RLS 400/E MX RLS 300/EV MX
16 gG
4
25 gG
6
RLS 400/EV MX
18
-XO2
QGO20...
Q4 Q5 PE B1 M B2 M G2 U3 -G10
+BC
-G20
+BC -G30
+BC
L
N
PE
B1
M
B2
M
G2
U3
sch
TGAS1 TGAS2
sch
TAIR1 TAIR2
sch
ϑ
Pt/LG-Ni 1000
ϑ
Pt/LG-Ni 1000
-GF PE W V U L1 L2 L3 PE
INVERTER SIEMENS TYPE SED2
-MV
PEWVU
sch GNYE BU BN BK
4x6mm2+sch
BK BN BU
4x6mm2
GNYE
U1
V1
W1
PE
6x0.5mm2+sch
sch 5GY 4YE 3GN 2BN 1WH BN BU
3x1mm2
FE
X73.5 X73.4 X73.3 X73.2 X73.1
24 25
FE 2- 3+ 21
NO 5 9 22 25 24 IN OUT COM COM NO
+24
Setpoint
0/4…20mA
X1

EMISSIONS
The emission data has been
measured in the various models at
maximum output, according to EN
676 and EN 267 standard.
The RLS/E-EV MX series combustion head reduce polluting emissions thanks to their special design
which optimises the air fuel mix.
In the RLS/E-EV MX series part of
the gas is distributed through
outlets which the remaining gas is
injected directly into the centre of
the flame.
This prevents no homogeneous
concentrations in the flame with
areas of high oxidation,
producing very stable flame with
gradual and progressive
combustion as the flame develops,
thus giving polluting emission
values below even the most
restrictive norm values.
Combustion head operating diagram of RLS/E-EV MX series
19
NOISE EMISSIONS
dB(A)
0
20
40
60
80
100
RLS 300/E-EV MX RLS 400/E-EV MX
NOx EMISSIONS
mg/kWh
0
50
100
150
200
250
RLS 300/E-EV MX RLS 400/E-EV MX

X
Z
Y
OVERALL DIMENSIONS (mm)
PACKAGING
BURNER - BOILER MOUNTING FLANGE
RLS 300-400/E-EV MX
BURNER
ØD2
350
350
M18
M18
452
452
D1
Ø
D2
45°
45°
D1
Model X
1960
1960
Y
970
970
kg
240
250
Z
940
940
Model
RLS 300/E-EV MX
RLS 400/E-EV MX
RLS 300/E-EV MX
RLS 400/E-EV MX
Model
RLS 300/E-EV MX
RLS 400/E-EV MX
FQAD E H I NOMSP
M
S
O
M
O
S
Q
Q
A
D
E
I
F
H
N
P
20
720
775
373
373
320
320
890
890
1325
1325
313
313
605
605
164
164
1055
1055
DN80
DN80
1175
1175
342
342