Datasheet Content
DUAL FUEL GAS/LIGHT-OIL BURNERS TWO
SK073567_B_en
STAGES PROGRESSIVE OR MODULATING
K X6/M EVO - K X7/M
Dual fuel burners gas/light oil two stages progressive (hi-low flame) or modulating (PID fully modulating) if
equipped with addition of optional modulation kit and probe.
Composed by die-cast aluminum body, air blower at high pressurisation and combustion head with adjustment
at high efficiency and high flame stability.
Compact overall dimensions and disposition rationalized of the components with accessibility facilitated for the
easy setting and maintenance.
GAS fuel available in the versions METHANE (natural gas) or L.P.G. (to specify at the order) on demand
specific versions for town gas or biogas.
Gas train composed by: working valve with regulation class A, safety valve class A, valve proving system,
minimum gas pressure switch and filter stabilizer.
Burners are supplied with nozzle, fuel selection switch, flange, gasket for installation on boiler, flexible
hoses, line filter.
Fig. K X6/M EVO - K X7/M
K X6/M EVO - K X7/M
DUAL FUEL GAS/LIGHT-OIL BURNERS TWO
SK073567_B_en
STAGES PROGRESSIVE OR MODULATING
TECHNICAL DATA K X6/M EVO - K X7/M
MODEL K X6/M EVO K X7/M
Thermal power min. 1°st. / min. 2°st. - max. 2°st. * [Mcal/h] 306/561-1118 367/765-1548
Thermal power min. 1°st. / min. 2°st. - max. 2°st. * [kW] 355/652-1300 427/890-1800
Gas flow G20 (NATURAL GAS) min. 1°st. / min. 2°st. - max. 2°st. * [Nm³/h] 35.8/65.6-130.8 43/89.5-181
Gas flow G31 (L.P.G.) min. 1°st. / min. 2°st. - max. 2°st. * [Nm³/h] 13.8/25.2-50.3 16.5/34.5-69.7
Fuel: NATURAL GAS (second family) - L.P.G. (third family)
Fuel category: I2R,I2H,I2L,I2E,I2E+,I2Er,I2ELL,I2E(R),I3B/P,I3+,I3P,I3B,I3R
Intermitted working operation (min. 1 stop every 24 hours) two stage progressive or modulating
Environmental conditions operation / storage: -15...+40°C / -20...+70°C, rel. humidity max. 80%
Max. temperature combustion air [°C] 60 60
Minimum pressure gas train D1"1/2 NATURAL GAS/L.P.G. ** [mbar] 46.2/21.5 81.8/38.4
Minimum pressure gas train D2" FS50 NATURAL GAS/L.P.G. ** [mbar] 39.8/19 69.6/33.6
Minimum pressure gas train DN65 FS65 NATURAL GAS/L.P.G. ** [mbar] 26.6/14 44.2/23.8
Minimum pressure gas train DN80 FS80 NATURAL GAS/L.P.G. ** [mbar] 21.9/12.1 35.4/20.3
Maximum pressure at the entry of valves (Pe. max) (D1"1/2-D2") [mbar] 360 360
Maximum pressure at the entry of valves (Pe. max) (DN65-DN80) [mbar] 500 500
LIGHT-OIL flow min. 1°st. / min. 2°st. - max. 2°st. * [kg/h] 30/55-110 36/75-152
Fuel: light-oil 1.5°E at 20°C = 6.2 cSt = 35sec Redwood N°1
Nominal electric power [kW] 3.5 5.25
Fan motor [kW] 2.2 4
Pump motor [W] 750 750
Nominal absorption powers [A] 6.8 9.5
Nominal absorption auxiliary [A] 0.55 0.55
Power supply: 3~400V, 1N~230V - 50Hz
Electric protection degree: IP40 IP40
Noisiness *** min. - max. [dB(A)] 82-83 84.3-86.6
* Reference conditions: Environment temperature 20°C - Barometric pressure 1013 mbars - Altitude 0 metre (sea level).
** Minimal feeding-gas pressure to the gas train to get the maximum power of the burner, considering counter-pressure in combustion chamber
of value 0 (zero).
*** Measured sonorous pressure in the laboratory combustion, with functional burner on beta boiler to 1 metre of distance (UNI EN ISO 3746 law
- method of control Class 3 - The tollerance of the measured pressure can be taken equal to ± 1 [dB(A)]).
K X6/M EVO - K X7/M
DUAL FUEL GAS/LIGHT-OIL BURNERS TWO
SK073567_B_en
STAGES PROGRESSIVE OR MODULATING
OPERATING RANGE DIAGRAM
16
K X6/M EVO
14
12
10
8
6
4
2
0
200 400 600 800 1000 1200 1400
Fig. X = Thermal power [kW] Y = Pressure in combustion chamber [mbar]
The firing rates has been obtained based on test boilers in accordance with EN676 standards and are indicative of matching the burner to the
boiler. For the correct operation of the burner, combustion chamber dimensions must be in accordance with current regulation. In case of non-
compliance, contact the manufacturer.
16
K X7/M
14
12
10
8
6
4
2
0
200 400 600 800 1000 1200 1400 1600 1800 2000
Fig. X = Thermal power [kW] Y = Pressure in combustion chamber [mbar]
The firing rates has been obtained based on test boilers in accordance with EN676 standards and are indicative of matching the burner to the
boiler. For the correct operation of the burner, combustion chamber dimensions must be in accordance with current regulation. In case of non-
compliance, contact the manufacturer.
K X6/M EVO - K X7/M
DUAL FUEL GAS/LIGHT-OIL BURNERS TWO
SK073567_B_en
STAGES PROGRESSIVE OR MODULATING
DIMENSIONS [MM]
40 183
H
320 D
R1
320
TC-TL G
RD
E
B C
R4
R2
R3 F1 - F2
Fig. Dimensions
MODEL B C D E F1 F2 G H TC* TL** R1 R2 R3 R4 RD Gas
train
weight
K X6/M EVO - D1"1/2 398 402 209 148 1040 1624 510 213 280 400 228 510 684 496 Rp 1"1/2 22 kg
K X6/M EVO - D2" 398 402 209 148 1040 1624 510 213 280 400 228 510 684 496 Rp 2" 22 kg
K X6/M EVO - DN65 398 402 209 148 1040 1624 510 213 280 400 228 510 686 541 DN65 27 kg
K X6/M EVO - DN80 398 402 209 148 1040 1624 510 213 280 400 228 550 740 578 DN80 37 kg
K X7/M - D1"1/2 398 402 209 148 1040 1624 510 213 280 400 228 510 684 496 Rp 1"1/2 22 kg
K X7/M - D2" 398 402 209 148 1040 1624 510 213 280 400 228 510 684 496 Rp 2" 22 kg
K X7/M - DN65 398 402 209 148 1040 1624 510 213 280 400 228 510 686 541 DN65 27 kg
K X7/M - DN80 398 402 209 148 1040 1624 510 213 280 400 228 550 740 578 DN80 37 kg
* With spacer.
** For different flame tube lengths, please contact our Technical-Sales Department.
BOILER PLATE
* Suggested dimension of connection between burner
and generator.
Fig. Boiler plate
MODEL L min L max M N min N* N
max
K X6/M EVO mm 340 368 M14 220 220 250
K X7/M mm 340 368 M14 220 220 250
K X6/M EVO - K X7/M
DUAL FUEL GAS/LIGHT-OIL BURNERS TWO
SK073567_B_en
STAGES PROGRESSIVE OR MODULATING
PRODUCT SPECIFICATION
SHORT DESCRIPTION
Dual fuel burners for gas and light-oil two stages progressive (hi-low flame) or modulating (PID fully modulating) if equipped
with addition of optional modulation kit and probe.
DETAILED SPECIFICATION
Dual fuel burners for gas and light-oil two stages progressive (hi-low flame) or modulating (PID…
