3312
6
GB
ELECTRICAL WIRING WITH GAS LEAK CONTROL DEVICE
(DUNGS VPS 504)
COMBUSTION HEAD ADJUSTMENT
Loosen the screw (A), move the elbow (B) so that
the rear plate of the coupling (C) coincides with
the set point.
Tighten the screw (A).
Example:
The burner is installed in a 40 kW boiler.
Considering efficiency of 90% the burner must
supply around 44 kW.
The diagram shows that for this
output the adjustment must be
made on notch
3
.
The diagram is to be used only
for initial settings, to improve air
pressure switch operation or
improve combustion, it may be
necessary to reduce this setting
(set point toward position 0).
230V
~
50Hz
KEY TO LAY-OUT
B5
– 2nd stage lock-out signal
h1
– 1st stage Hour counter
h2
– 2nd stage Hour counter
PG
– Min. gas pressure switch
S3
– Remote lock-out signal
(230V - 0.5 A max.)
T6A
– Fuse
TL
– Limit thermostat
TR
– 2st stage thermostat
TS
– Safety thermostat
V10
– Safety valve
V11
– 1st stage valve
V12
– 2st stage valve
X4
– 4 pin plug
X6
– 6 pin plug
X7
– 7 pin plug
D4371
S7015
C
A
B
0
2
1
3
4
70
50
40
30
20
10
60
50,000
40,000
30,000
20,000
10,000
kcal/h
kW
Set point
D5068
5
60,000
44
