Unigas C85A, Руководство по установке, использованию и обслуживанию

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PART III: OPERATION
29
Progressive burners
Once the procedure till step 8 described is accomplished, go on as follows:

set the low flame cam matching the high flame cam;

set the TAB thermostat to the minimum in order that the actuator moves progressively towards the low flame position;

The manual air damper control is not provided on these actuators. The adjustments must be carried out acting manually on the
cams.

Versione LME22

Versione LGK16-SQM40

move the low flame cam to the minimum to move the actuator towards the low flame until the two bearings find the adjusting screw
that refers to the lower position: screw
V to increase the rate, unscrew to decrease.

Move again the low flame cam towards the minimum to meet the next screw on the adjusting cam and repeat the previous step; go
on this way as to reach the desired low flame point.
Berger STA12B3.41 (progressive and fully modulating burners) Siemens SQN72.4A4Axx (progressive and fully modulating burners)
For DUNGS MB-DLE / Siemens VGD gas valves
Actuator camsBerger
STA
Siemens SQN72
High flame position (set to 90°)
ST2
I (
red
)
Low flame and ignition position
ST1
III (
orange
)
Stand-by position (set to 0°)
ST0
II (
blue
)
Not used
MV
IV (
black
)
Siemens SQM40
Actuator cams (SQM40)
I High flame
II Stand-by
III Low flame - gas
IV Low flame - oil
V Ignition - oil
VI Ignition - gas
MV
ST2
ST1
ST0
IV
III
II
I
AUTO/MAN
MAN-AUTO
mensions
Dimensions in
SQM4...
I
III
II
IV
V
VI VI
V
IV
II
III
I
SC
SV
ID
V
SV
Gas butterfly valve clo
s
ed
Gas butterfly valve open