2861
2
GB
2.
BURNER DESCRIPTION
Gas burner with two stage progressive or modulating operation.
2.1
BURNER EQUIPMENT
Flange with insulating gasket . . . . . . . . . . . . . . . . No. 1
G1/8 union elbow . . . . . . . . . . . . . . . . .No. 1
Screws and nuts for flange to be fixed to boiler . . No. 4
4 pin plug . . . . . . . . . . . . . . . . . . . . . . No. 1
Screw and nut for flange . . . . . . . . . . . . . . . . . . . No. 1
7 pin plug . . . . . . . . . . . . . . . . . . . . . . No. 1
Blue plastic tube . . . . . . . . . . . . . . . . . . . . . . . . . . No. 1
2.2
ACCESSORIES
(optional):
• KIT (PC INTERFACE KIT):
cod.
3002719
• OUTPUT POWER REGULATOR KIT
Under modulating operation, the burner automatically adapts to one of an infinite number of firing rates
between the low and high flame output position, thus ensuring stable operating conditions in terms of tem-
perature or pressure. Two components should be ordered
– Power regulator to install to the burner;
– Probe to install to the boiler.
PARAMETER TO
BE REGULATED
PROBE
REGULATOR
Range
Type
Code
Type
Code
Temperature
–
100...
+
500 °C
PT 100
3010110
RWF40
3001078
Pressure
0...2.5 bar
Output probe 4...20 mA
3010213
0...16 bar
Output probe 4...20 mA
3010214
1
– Flange with insulating gasket
2
– Blast tube
3
– Control box
4
– Reset button with lock-out lamp
5
– Air damper adjustment assembly
6
– Combustion head setting screw
7
– Air pressure switch
8
– Air pressure test point in combustion chamber
(to be connected to gas valve assembly)
³
CE marking according to Gas Appliance directive 90/396/EEC; PIN
0085BN0609
.
According to directives: EMC 89/336/EEC - 2004/108/EC, Low Voltage 73/23/EEC - 2006/95/EC,
Machines 98/37/EEC and Efficiency 92/42/EEC.
³
The burner is approved for intermittent operation as per Directive EN 676.
³
The burner meets protection level of IP X0D (IP 40), EN 60529.
³
Gas train according to EN 676.
9
– 4 pole socket for 2
nd
stage / modulating
connection
10
– 7 pole socket for burner supply
11
– 6 pole socket for gas train
12
– Air pressure test point (to be connected to gas
valve assembly)
13
– Operating mode switches for:
automatic / manual mode (AUT / MAN)
increase / decrease output (+/-)
Fig. 1
D4428
1
11
2
3
4
6
5
9
13
10
12
7
8
