Unigas TP90A-TP91A, Руководство по установке, использованию и обслуживанию, Страница: 29 / 64

PART I: INSTALLATION MANUAL
29
Settings by means of Berger Siemens SQM40.. actuator
1 startup the burner by turning its main switch to on: if the burner locks press the RESET button on the burner control panel - see-
chpater “OPERATION”.
SQM40.265 Actuator cams
2
3
check the fan motor rotation (see page 22)..
4 Before starting the burner up, drive the high flame actuator microswitch matching the low flame one (in order to let the burner ope-
rates at the lowest output)to safely achieve the high flame stage.
5 Start the burner up by means of the thermostat series and wait until the pre-purge time comes to an end and that the burner starts
up;
6 drive the burner to high flame stage, by means of the high/low flame thermostat TAB (see Wiring diagrams); as far as fully-modu-
lating burners, see relateda paragraph.
7 Then move progressively the high flame actuator microswitch to higher values until it reaches the high flame position; always check
the combustion values and eventually adjusting the gas by means of the valves group governor and the air by means of the related
adjusting cam (see next steps).
8 Go on adjusting air and gas flow rates: check, continuosly, the flue gas analisys, as to avoid combustion with little air; adjust the air
according to the gas flow rate change following the steps quoted below;
9 acting on the pressure stabiliser of the valves group, adjust the gas flow rate in the high flame stage as to meet the values
requested by the boiler/utilisation:
- Siemens VGD valves group: remove cap T and act on the VR adjusting screw to increase or decrease the pressure and conse-
quently the gas rate; screwind VR the rate increases, unscrewing it decreases (see next figure).
- Dungs MBC..SE valves group: act on its pressure governor to increase or decrease the pressure and consequently the gas
rate.
:
10 To adjust the air flow rate in the high flame stage , loose the RA nut and screw VRA as to get the desired air flow rate: moving
the rod TR towards the air damper shaft, the air damper opens and consequently the air flow rate increases, moving it far from the
shaft the air damper closes and the air flow rate decreases.
Note: once the procedure is perfomed, be sure that the blocking nut RA is fasten. Do not change the position of the air damper
MAN-AUTO
(RD) I High flame
(BU) II Stand-by
(OG) III Low flame
(YE) IV -
(BK) V -
(GN) VI Ignition
VR
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Siemens VGD..
Dungs MBC..SE