Sime Murelle 25 OF Manual Download Page 25

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4.4

MAINTENANCE

To. guarantee. functioning. and. efficiency. of.
the.appliance,.in.respect.of.the.legal.provi-
sions.in.force,.it.must.be.regularly.checked;.
the.frequency.of.the.checks.depends.on.the.
type. of. appliance. and. the. installation. and.
usage.conditions.
In.any.case,.it.should.be.inspected.at.least.
once.a.year.by.a.qualified.technician.

Carry. out. the. cleaning. of. the. generator. in.
the.following.way:
–. Turn.the.main.switch.off.to.stop.electric.

power. reaching. the. boiler. and. close. the.
gas.feed.cock.

–. Remove.the.outer.casing.and.the.gas.bur-

ner. manifold. unit.. To. clean. the. burner,.
blow.in.a.jet.of.air,.so.as.to.remove.any.
dust. particles. that. may. have. accumula-
ted.

–. Clean.the.heat.exchanger,.removing.any.

dust. or. residue. from. combustion.. When.
cleaning.the.heat.exchanger.or.the.bur-
ners,.chemical.products.or.steel.brushes.
MUST.NOT.BE.USED.

. Make. sure. that. the. tops. of. the. burners.

with. the. holes. are. free. from. encrusta-
tions.

–. Reassemble.the.items.removed.from.the.

boiler,.making.sure.to.follow.the.correct.
sequence.

–. Check.operation.of.the.main.burner.
–. After.assembly.of.all.the.gas.connections,.

these. must. be. tested. for. soundness,.
using. soapy. water. or. appropriate. pro-
ducts..DO.NOT.USE.NAKED.FLAMES.

–. Do. not. use. calcium. chloride. to. treat.

the. plastic. component. during. generator.
maintenance..

4.4.1 Chimney sweep function (fig. 22)

To. check. boiler. combustion,. press. the.
installer’s.key.

.for.a.few.seconds..

The.chimney.sweep.function.will.switch.on.
and.will.continue.for.15.minutes.

From.that.

moment,. the. boiler. will. start. working. in.
heating.mode.at.maximum.power,.with.cut.
off.at.80°C.and.re-ignition.at.70°C.

Before activating the chimney sweep fun-
ction make sure that the radiator valves or
eventual zone valves are open.
The. test. can. also. be. carried. out. with. the.
boiler.working.in.D.H.W..mode..
For.this,.after.activating.the.chimney.sweep.
function,. open. one. or. more. hot. water. fau-
cets..Under.these.conditions,.the.boiler.will.
function.at.maximum.power.with.the.D.H.W..
kept.at.between.60°C.and.50°C..During.the.
test,. the. hot. water. faucets. must. remain.
open.
If.the.key

and

are.pressed.during.the.

15.minutes.of.the.chimney.sweep.function,.
the. boiler. will. be. brought. respectively. to.
maximum.and.minimum.power.
The chimney sweep function will automati-
cally switch off after 15 minutes or when
the key .

.is pressed again.

4.4.2 Cleaning the filter “Aqua Guard

Filter System” (fig. 23)

To.clean.the.filter,.close.the.delivery/return.
on/off.taps,.turn.off.the.power.to.the.control.
panel,. remove. the. casing. and. empty. the.
boiler.using.the.drain.provided..
Place.a.container.for.collection.underneath.
the. filter,. unscrew. the. cap. and. proceed. to.
clean. the. filter,. removing. impurities. and.
limestone.deposits..
Check.the.seal.o-ring.before.reassembling.
the.cap.with.the.filter.

4.4.3 Operation floor drying (fig. 23/a)

The.operation.floor.drying.keeps.the.floor.at.
a. pre-established. temperature. profile. and.
it.is.activated.only.for.those.systems.com-
bined. with. the. mixed. zone. card. ZONA.MIX.
code. 8092234.. The. temperature. profiles.
can. be. selected. by. means. of. the. installer.
parameter.PAR.43:.

0.=.Not.activated.function
1.=.Curve.setting.A
2.=.Curve.setting.B
3.=.Curve.setting.A.+.B
The. turning. off. of. . the. function. happens.
clicking.on.the.button.OFF.(return.of.PAR.43.
to.the.value.0).or.automatically.at.the.end.of.
the.function..
The.set.of.the.mixed.zone.follows.the.deve-
lopment.of.the.selected.curve.and.reaches.
a. maximum. of. 55°C.. During. the. function.
all. the. other. heating. demands. are. ignored.
(heating,. sanitary,. antifreeze. and. chimney.
sweep)..
During. the. functioning. the. display. shows.
the. remaining. days. for. the. completion. of.
the.function