Working; Combustion Adjustment; Combustion Head Setting - Riello 564T31 Installation, Use And Maintenance Instructions

3.4.2 ELECTRICAL WIRING WITH GAS LEAK CONTROL DEVICE (DUNGS VPS 504)
KEY TO LAY-OUT
X6 – 6 pin plug
X7 – 7 pin plug
B4 – Working signal
h1 – Hour counter
PG – Minimum gas pressure
switch
S3 – Remote lock-out signal 
(230V - 0.5 A max.)
T6A – Fuse
TL – Limit thermostat
TS – Safety thermostat
V10 – Safety valve
V11 – Adjustment valve
4.

WORKING

4.1 COMBUSTION ADJUSTMENT

In conformity with EN 676 the application of the burner on the
boiler, adjustment and testing must be carried out observing the
instruction manual of the boiler, including verification of the CO
and CO concentration in the flue gases, their temperatures and
2
the average temperature of the water in the boiler.
To suit the required appliance output, choose the proper set-
ting of the combustion head, and the air damper opening.

4.2 COMBUSTION HEAD SETTING

Loose 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 on a 81 kW boiler
with an efficiency of 90%, the burner
input is about 90 kW using the diagram,
the combustion set point is 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).
20027965
TO BE DONE BY
THE INSTALLER
D4199
kcal/h
100,000

90,000
80,000
70,000
60,000
50,000
40,000
C
A
B
kW
120
110
100
90
80
70
60
50
40
0 1
6 GB
~
230V
D5258
2 3 4
Set point
50Hz
S7015
5