6
Technical data
Important components, burner description
important
components:
Flame monitor
QRA 2, QRA 53 / FFS 06
Ignition transformer
EBI
Servo motor
SAD15 / STM 30/40
Air pressure switch
DL 50 A
Burner type
N10.12000.30
G-EU2
N10.12000.37
G-EU2
N10.14000.37
G-EU2
N10.14000.45
G-EU2 FQ
N10.16000.45
G-EU2 FQ
Operating mode
The burner is designed as an automatic
controllable gas blast burner to EN 437
Gasfamily 2. It is tested according to
EN 676 and fitted with a
delta burner
head
, a system for the low NO
x
combu-
stion of fuel.
Application
The burners are applicable for the ope-
ration at heating boilers, steam boilers
and air heater with 3-pass, draft or
reverse furnace.
Design
The burner is supplied with connection
leads fixed to a terminal block ready for
connection to the boiler system.
BCS and Etamatic OEM design
The burner is equipped with an electro-
nic burner control system (automatic
furnace controller, electronic compound
controller, gas valve leak detector).
Other electronic burner controller
Electronic burner control (automatic fur-
nace controller, electronic compound
controller, gas valve leak detector) is
placed in the separated switch cabinet.
Combustion air
An overpressure fan impeller with a
steep characteristic is provided to
ensure a high pressure build-up. This
ensures a pulsation-free and steady
combustion behaviour also on boilers
with a high exhaust gas resistance.
Control
The fuel-air ratio is controlled by an
electronic compound controller with
actuators provided for positioning the
following control elements:
- air damper,
- gas damper.
- event. frequency inverter.
Sensors
A flame sensor and an approved auto-
matic furnace controller are provided for
flame monitoring. An differential pres-
sure switch is fitted for fan air monito-
ring. A speed monitor is installed if an
automatic speed control system is
used.
Ignition
Electrical high voltage ignition of the
enclosed ignition burner.
Heat capacity of the ignition flame
< 10% of the main flame.
Internal exhaust gas return
As a primary precaution to minimize the
generation of nitric oxides, the
delta
burner head
will internally extract com-
bustion gases from the furnace cham-
ber and feed them to the fuel mixture.
This concept does away with the equip-
ment otherwise required for the external
return of the exhaust gases.
12/2011 14 072 205
Summary of Contents for Low-NOx N10.12000.30 G-EU2
Page 33: ...34 Manufacturer s declaration...