Baltur GI 1000 DSPG Instructions For Use Manual - page 42
E
N
G
L
I
S
H
14 / 26
0006080767_201002
particles in the fan’s air ducts, etc.). Smoke opacity depends on
thetypeoffuelutilized(themostrecentprovisionsindicatethat
it should not exceed N° 2 of the Bacharach Scale).
We advise, if possible, maintaining smoke opacity below N°
2 of the Bacharach Scale, even if, as a consequence, the
CO
2
value is slightly lower. The lower smoke opacity dirties
the boiler less and therefore its average yield is normally
high even when the CO
2
value is slightly inferior. It should be
remembered that, in order to regulate properly, the water in
the system should be at the right temperature and the burner
should have been operating for at least 15 minutes. If the
appropriate instruments are not available, judgement can be
basedonthecolouroftheflame.Weadviseregulatinginsuch
awayastoobtainaflamebrightorangeincolour.
Avoidaredflamewithsmokeinit,orawhiteflamewithan
exaggerated excess of air. After having checked the air/fuel
regulation, tighten the locking screws of the adjustable screws.
19) The gas pressurestats (minimum and maximum pressure)
prevent the burner from operating when gas pressure is not
withinplannedrange.Giventhespecificfunctionsofthese
pressurestats, it follows that the minimum pressure control
switchmustutilizethecontactthatisclosedwhentheswitch
detects pressure higher than its own setting. The maximum
pressurecontrolswitch,ontheotherhand,mustutilizethe
contact that is closed when the switch detects pressure lower
than its own setting. Minimum and maximum gas pressu-
restats must be set during burner testing, in relation to the
pressure values detected from time to time. The pressurestats
are connected in series, therefore operation (i.e. opening of
the circuit) of either one of the switches does not consent
switch-on of the equipment. Correct gas pressurestat ope-
ration must be checked during burner testing.
Byusingtheadjustmentdevices,itcanbeverifiedwhetherthe
pressurestat that must stop the burner (by opening the circuit)
effectively operates.
20) Control that the modulation motor functions automatically by
putting the AUT - O - MAN switch in the “AUT” position and
the MIN - O - MAX switch in the “O” position. In this way, mo-
dulation is activated exclusively by the automatic command
of the boiler’s probe, if the burner is a GI...MM (modulating)
version, or on the command of the thermostat or pressure
switch of the 2nd stage, if the burner is a GI...DSPG (two
stage progressive) version. (See Chapter “Electronic Poten-
tiality Regulator RWF 40 for the modulating version).
Normally, it is not necessary to alter the internal settings of the
Potentiality Regulator RWF 40, however, the relative instruc-
tions are contained in the appropriate booklet.
21) Checktheefficiencyoftheflamedetectiondevice(Photore-
sistantCell).Thephotoresistantcellisaflamecontroldevice
and,iftheflameshouldbeextinguishedduringoperations,it
must be capable of intervening (this control should be made at
least one minute after start up). The burner should be capable
ofblockingitself(shutdown),andremainingso,iftheflame
does not appear regularly during the start up phase within the
time limit preset on the control box. The shut down causes an
immediate interception of the fuel, the burner comes to a stan-
dstillandtheredwarninglightcomeson.Tochecktheefficiency
of the photoresistant cell and of the shut down system, proceed
as follows:
a) Start up the burner
b) after one minute, extract the photoresistant cell by pulling it out
ofitsseatandsimulateflamefailurewithadarkcloth.The
flameshouldbeextinguishedandthecontrolboxwillrepeat
the ignition phase from the beginning and, immediately after
theflameappears,itwillgotoshutdown.
c) The control box can only be unblocked by pressing manually on
the appropriate pushbutton (unblocking).
Tochecktheefficiencyoftheshutdowndevice,carryoutthiscontrol
at least twice.
22) Checktheefficiencyoftheboiler’sthermostatsorpressure
switches (this operation should stop the burner).