Ygnis BLU 7000.1 PR Manuel D'instructions page 12

B 420010391600 BLU 7000. 1 - 12000. 1 PR / M D
WARNING: In order to have a correct combustion and thermal output adjustments, these must be carried out together
with a combustion analysis, to be executed through suitable devices, taking care that the values are the correct ones and
are in accordance with the local safety regulations. The adjustments must be carried out by qualified and skilled techni-
cians authorised by YGNIS.
Ionization Probe
Elettrodo di rivelazione
40 mm
To remove the combustion head operate from the
top cover of the burner
AD J U STM EN T O F G AS M I N I M U M PRESSU RE SW I TCH
Unscrew off and remove cover M. - Set regulator N to a value equal to 60% of gas nominal feed pressure
(i.e. for nat. gas nom. pressure = 20 mbar, set regulator to a value of 12 mbar; for L.P.G. nom.
pressure of G30/G31- 30/37 mbar, set regulator to a value of 18 mbar).Screw up cover M
AD J U STM EN T O F TH E AI R PRESSU RE SW I TCH
Unscrew screws A and B and remove cover C.- Set the pressure switch to the minimum by
turning regulator D to position 1.
- Start the burner and keep in low flame running, while checking that combustion is correct.
Through a small cardboard, progressively obstruct the air intake until to obtain a CO2 increase of
0,5÷0,8% or else, if a pressure gauge is available, connected to pressure port E, until reaching a
pressure drop of 1 mbar (10 mm of W.G.). - Slowly increase the adjustment value of the air
pressure switch until to have the burner lockout. Remove the obstruction from the air intake,
screw on the cover C and start the burner by pressing the control box rearm button.
N ot e: The pr es s ur e m eas ur ed at pr es s ur e por t E m us t be wi t hi n t he l i m i t s of t he pr es s ur e
s wi t c h wor ki ng r ange. I f not , l oos e t he l oc ki ng nut of s c r ew F and gr adual l y t ur n t he s am e:
c l oc kwi s e t o r educ e t he pr es s ur e; c ount er c l oc kwi s e t o i nc r eas e. At t he end t i ght en t he l oc ki ng nut .
CO M BU STI O N AD J U STM EN T
FI RI N G H EAD SETTI N G
I G N I TI O N EN D I O N I ZATI O N ELECTRO D ES
Ignition Electrode
Elettrodo di accensione
3 mm
Correct electrode positioning is shown in the picture above.
pag.12
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