External Sensor - Sime Murelle HE 12 T ErP Instrucciones Originales

3.4 EXTERNAL SENSOR
(fig. 13)
If. there. is. an. external. sensor,. the. heating.
settings.SET.can.be.taken.from.the.climatic.
curves.according.to.the.external.temperatu-
re.and,.in.any.case,.limited.to.with.the.range.
values. described. in. point. 3.3. (parameters.
PAR.25.for.zone.1.and.PAR.26.for.zone.2)..
The.climatic.curve.to.be.set.can.be.selected.
from. a. value. of. 3. and. 40. (at. step. 1)..
Increasing. the. steepness. of. the. curves. of.
fig..13.will.increase.the.output.temperature.
as.the.external.temperature.decreases.
3.5 CARD FUNCTIONING
The. electronic.card. has. the. following. fun-
ctions:
–. Antifreeze.protection.of.the.heating.and.
sanitary.water.circuits.(ICE).
–. Ignition.and.flame.detection.system.
–. Control.panel.setting.for.the.power.and.
the.gas.for.boiler.functioning.
–. Anti-block.for.the.pump.which.is.fed.for.
a.few.seconds.after.24.hours.of.inactivi-
ty.
–. Antifreeze.protection.for.boilers.with.an.
accumulation.boiling.unit.
–. Chimney. sweep. function. which. can. be.
activated.from.the.control.panel.
–. Temperature. which. can. be. shifted. with.
the.external.sensor.connected..
. It.can.be.set.from.the.control.panel.and.
is.active.on.the.heating.systems.of.both.
circuit.1.and.circuit.2.
–. Management. of. two. independent. hea-
ting.circuit.systems.
–. Automatic. regulation. of. the. ignition.
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. electronic.
systems:. remote. control. SIME.HOME.
code. 8092280/81,. thermal. regulator.
RVS,. connected. to. a. management. card.
of.a.mixed.zone.ZONA.MIX.code.8092234.
and.card.solar.INSOL.code.8092235..
NOTE: If using RVS set parameter 10 to
3 (PAR 10 = 3).
3.6 TEMPERATURE
DETECTION
SENSOR
Table 4 shows. the. resistance. values. of. the.
heating,. DHW. and. exhaust. fumes. thermi-
stors..
If the heating sensor (SM) is faulty or open
circuit, the boiler will not function on either
heating or DHW (ALL 05).
If the exhaust fumes sensor (SF) is faulty or
open circuit, the boiler will not function on
either heating or DHW (ALL 14).
If the DHW sensor (SS) is faulty or open
circuit, the boiler will work without modu-
ATTENTION: curves are calculated at an ambient temperature
of 20°C. The user can act on the boiler controls to change the
environment set for which the bend has been calculated by ±5°C.
lation to the DHW temperature.
TABLE 4 (SM - SS - SF sensors)
. 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
3.7 ELECTRONIC IGNITION
Ignition. and. flame. detection. is. controlled.
by.a.single.electrode.on.the.burner.which.
guarantees. reaction. in. the. case. of. acci-
dental.extinction.or.lack.of.gas.within.one.
second.
3.7.1 Functioning cycle
Burner. ignition. occurs. within. max.. 10.
seconds.after.the.opening.of.the.gas.valve..
Ignition.failure.with.consequent.activation.
of.block.can.be.due.to:
–. Lack of gas
The. ignition. electrode. persists. in.
discharging. for. max.. 10. seconds.. If. the.
burner. does. not. ignite,. the. anomaly. is.
signalled.
. This.can.happen.the.first.time.the.boiler.
is. switched. on. after. a. long. period. of.
inactivity. due. to. the. presence. of. air. in.
the.gas.pipes
.. It.can.be.caused.by.a.closed.gas.tap.or.
by. a. broken. valve. coil. (the. interruption.
does.not.allow.for.opening)..
–. The electrode does not discharge.
. In.the.boiler,.only.the.opening.of.the.gas.
to.the.burner.can.be.detected..After.10.
seconds.the.anomaly.is.signalled..It.can.
be.caused.by.an.interruption.in.the.elec-
trode.wire.or.if.it.is.incorrectly.anchored.
to.the.connection.points..
. Or. the. electrode. may. be. earthed. or.
strongly. worn:. it. must. be. replaced.. Or.
the.electronic.card.may.be.defective.
–. No flame detected
. After.start-up.the.electrode.continues.to.
discharge. even. when. the. burner. is. on..
After. 10. seconds,. the. discharge. stops,.
the.burner.is.switched.off.and.a.fault.is.
generated.
. This. fault. is. sometimes. caused. by. the.
shorting.of.the.electrode.cable.or.by.its.
improper.fixing.to.the.connection.points..
The.electrode.is.connected.to.the.earth.
or. badly. worn. and. must. be. replaced..
The.electronic.board.is.faulty.
In.the.case.of.a.sudden.lack.of.voltage,.the.
burner. will. immediately. switch. off.. When.
voltage. returns,. the. boiler. will. automati-
cally.start.up.again.
ES
PT
ENG
Fig..13
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