Sime FORMAT DGT 30e - Card Functioning; Electronic Ignition; External Sensor; Functioning Cycle

28
6.3.3 EXTERNAL SENSOR
If there is an external sensor, the hea-
tingsettingsSETcanbe takenfromthe
climaticcurvesaccordingtotheexternal
temperatureand,inanycase,limitedto
withtherangevaluesdescribedinpoint
3.2(parametersPAR13andPAR14).
The climatic curve to be set can be
selected from a value of 2,5 and 40 (at
step1).
Increasing the steepness of the curves
of fig. 18 will increase the output tem-
perature as the external temperature
decreases.
6.3.4 CARD FUNCTIONING
The electroniccard has the followingfun-
ctions:
– Antifreeze protectionof the heating cir-
cuit.
– Ignitionandflamedetectionsystem.
– Control panel setting for the power
andthegasforboilerfunctioning.
– Anti-jamming for the pump which is
fedforafewsecondsafter48hoursof
inactivity.
– Chimney sweep function which can
beactivatedfromthecontrolpanel.
– Flow temperaturecontrolwhich can
be shifted with the external sensor
connected.
 Itcanbesetfromthecontrolpanel.
– Automatic regulation of the igni-
tion power and maximum heating.
Adjustments are managed automati-
callybytheelectroniccardtoguaran-
tee maximum flexibility in use of the
system.
– Interface with the following electro-
nicsystems:remotecontrolCR73o
CR63,withcouplingkitcard expan-
sioncode8092240.

6.3.5 TEMPERATURE
DETECTION SENSOR
Table 3 shows the values obtained on
the heating sensor (SM1/SM2) is inter-
rupted, the boiler will not function for
both services.
This SENSOR must not be disabled or
bypassed at any time.
6.3.6 ELECTRONIC IGNITION
Ignition and flame detection is control-
led by a single electrode on the burner
whichguaranteesreactioninthecaseof
accidentalextinctionorlackofgaswithin
onesecond.
6.3.6.1 Functioning cycle
Burner ignition should occur within 10
secondsoftheopeningofthegasvalve.
Ifafterthreeattemptstheignitionisnot
detectedtheboilerwilllockout(ALL06):
– Lack of gas
The ignition electrode will dischar-
ge for a maximum of 10 seconds. If
afterthreeattemptstheignitionisnot
detected the boiler will lockout (ALL
06). This can happen the first time a
boiler is switched on, or after long
periods of inactivity. It can also be
causedbyaclosedgascockoragas
valvenotoperating.
– No ionisation
 The boiler will spark for 10 seconds,
ifafter3attemptstheionisationisnot
detected, the boiler will lockout (ALL
06).
 Thiscouldbeduetoapoorconnection
orbreakintheionisationcable.Check
also that the cable is not shorted,
badlywornordistorted.
 Inthecaseofasuddenlossofvoltage,
theburnerwillimmediatelyswitchoff.
Whenthevoltageisrestored,theboi-
lerwillautomaticallystartupagain.
TABLE 3
Temperature (°C) Resistance (Ω)
 20 12.090
 30 8.313
 40 5.828
 50 4.161
 60 3.021
 70 2.229
 80 1.669
ATTENTION: curves are calculated at an ambient temperature of 20°C. Using the
1
2
3
4
key on the control panel, the user can change the set ambient by ± 5°C for which
the curve is calculated.
PRESSOST A TO
VENTILATORE
CAMERA ST A GNA
(+)
(--)
Fig.19
SEALED CHAMBER
FAN
PRESSURE SWITCH
Fig.18