Table of Contents
Application
PZL
PZH
VAS
DG
DG
DG
DG
min
max
49
50
15
14
13
46
45
ϑ
P
1
2
µC
>750°
3
TC
0° 90°
53
FCU 500..F1
90° 0°
54
55
STM
58
47 48
DL
DL
min
Purge
M
PZL
PDZ
DG
BCU 580 · Edition 11.15l
VAS
BCU 580..F3
PZ
DG
VAS
VAS
p
/2
u
BCU 580..F3
VAS
M
DG
M
VAS
VAG
VR..L
VAS
VAG
VR..L
TE
1 .1 .8 Modulating burner control
For processes that do not require
heavy circulation in the furnace, e.g.
aluminium smelting furnaces.
This system is suitable for process-
es in which infiltrated air may flow
into the furnace through switched
off burners. The capacity can be
adjusted continuously by activating
the air control valve (analogue or
3-point step signal).
The pneumatic ratio control sys-
tem controls the gas pressure on
the burner proportionally to the air
pressure and thus maintains a con-
stant air/gas ratio. At the same time,
it acts as a low air pressure protec-
tion device.
The ignition and monitoring of the
pilot/main burners is ensured by
burner control units BCU 580.
The centrally checked safety func-
tions such as pre-purge, tightness
test, flow detector and pressure
switch check (gas
, gas
min.
air
) are provided by the FCU 500.
min.
,
max.
17
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