
DESIGN CHARACTERISTICS
The burner consists of:
• Ventilating part in light aluminium alloy.
• Centrifugal fan for high performances.
• Intake air conveyor.
• Combustion head complete with stainless steel nozzle.
• Flame inspection glass.
• Three-phase electric motor to run fan.
• Air pressure switch to ensure the comburent air presence.
• Gas train complete with control valve, operating and safety val-
ves, valve seal control, minimum and maximum pressure swi-
tch, pressure regulator and gas filter.
Fuel flow rate regulation by means of servomotor controlling gas
valve and flow rate regulator.
• Burner automatic command and control equipment with micro-
processor (electronic cam) in compliance with European stan-
dard EN298, with valve tightness control and eBus connection.
• Flame presence control with UV photocell.
• Control panel including on/off and burner off switches, fuel se-
lector, operation and shut-down warning lights, keypad for pro-
gramming electronic cam.
• Electric system with protection class IP54.
TECHNICAL FUNCTIONAL CHARACTERISTICS
• Dual burner, able to operate alternately with natural gas or with
diesel (max viscosity 1.5° E at 20°C).
• EC approval according to European Standard EN 676 for natu-
ral gas and Standard EN 267 for diesel.
• Progressive / modulating two-stage operation for both fuels.
• Electronic command and control equipment with microproces-
sor.
•
Fuel / comburent air flow rate regulation by means of two ser
-
vomotors controlled by the electronic equipment
• Combustion head with partial recirculation of combusted gases
with reduced emissions (class III according to EN 676 for natu-
ral gas, class II according to EN 267 for diesel).
• Hinge opens both ways to permit convenient access to the
mixer without dismantling the burner from the boiler.
•
Air minimum and maximum flow rate regulation by means of
electric stepper servomotor with pause closure of shutter to pre-
vent any heat dispersion to flue.
• Valve seal control and power regulation functions according to
European Standard EN 676 (read carefully the operating in-
structions given in the GUIDE supplied along with the burner for
further details about the equipment operations).
OPERATING RANGE
mbar
1
1
Minimum power adjustable with
diesel.
IMPORTANT
The operating ranges are obtained
from test boilers corresponding to
Standard EN676 and are indicative
of the burner-boiler combination.
For correct working of the burner
the size of the combustion chamber
must correspond to current regula-
tions; if not the manufacturers must
be consulted.
ENGLISH
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