Unigas R512A, Инструкция по эксплуатации

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C.I.B. UNIGAS - M039240CA
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Fully modulating burners
To adjust the fully-modulating burners, use the CMF switch on the burner control panel (see Fig. 14), instead of the TAB thermostat as
described on the previous paragraphs about the progressive burners. Go on adjusting the burner as described before, paying attention
to use the CMF switch intead of
TAB .
The CMF position sets the oprating stages: to drive the burner to the high-flame stage, set CMF=1; to drive it to the low-flame stage, set
CMF=2. To move the adjusting cam set CMF=1 or 2 and then CMF=0.
CMF = 0 stop at the current position
CMF = 1 high flame operation
CMF = 2 low flame operation
CMF = 3 automatic operation
As far as fully-modulating burners, see the Siemens RWF40.. manual.
Adjusting the combustion head
The burner is factory-set wih the D adjusting plate holes fully open, and the combustion head at its MAX position, so it is fit to work at
the maximum output.
To adjust the gas flow, partially close the holes, as follows:
1 loosen the three V screws that fix the adjusting plate D ;
2 insert a screwdriver on the adjusting plate notches and let it move CW/CCW as to open/close the holes;
3 once the adjustmet is performed, fasten the V screws.
To let the burner operate at a lower output, loose the VB screw and move progressively back the combustion head towards the MIN
position, by turning clockwise the VRT ring nut. Fasten VB screw when the adjustment is accomplished.
Attention! Change the combustion head position only if necessary. If so, repeat the air and gas adjustments described above.Now,
adjust the burner according to the actuator model provided.
CAUTION: perform these adjustments once the burner is turned off and cooled.
V
D
close holes
open holes
VRT
VB
“MAX” head position
“MIN” head position