Sime RS MK II Serie Manual Del Usuario página 49

–. fitted. with. a. chimneypot. at. its. top,. the.
outlet.of.which.must.be.outside.of.the.so-
called. reflux. area. to. prevent. formation. of.
counter-pressure.preventing.the.products.
of. combustion. from. being. freely. released.
into.the.atmosphere..
. The.minimum.heights.shown.in.fig..4.must.
be.complied.with;
–. without. mechanical. intake. devices. at. the.
top.of.the.flue;
–. if. the. flue. passes. through. or. adjacent. to.
inhabited. rooms,. there. must. be. no. over-
pressure.
2.5.1 Flue size
The.correct.sizing.of.the.flue.is.an.essential.
condition.for.efficient.boiler.operation..
The. main. factors. to. be. taken. into. conside-
ration. for. calculating. the. section. are. the.
heat. input. of. the. boiler,. the. type. of. fuel,. the.
percentage.of.CO ,.the.mass.flow.of.smoke.at.
2
nominal.load,.the.temperature.of.the.smoke,.
the. roughness. of. the. internal. wall,. and. the.
effect. of. gravity. on. the. draught. pressure,.
which. must. take. into. account. the. external.
temperature.and.the.altitude...
Table 1.shows.specific.parameters.pertaining.
to."RS Mk II" boilers.
2.6 BOILER BODY
The.cast.iron.body.is.supplied.ready.assem-
bled;.if.it.cannot.enter.the.boiler.room.assem-
bled,.it.may.be.supplied.dismantled..
Follow.the.instructions.below.to.assemble.the.
body:
–. Prepare.components.by.cleaning.the.hou-
sings.of.the.conical.nipples.with.thinner..
–. Introduce.the.plaster.seam.into.the.groove.
provided.for.the.flue.gas.seal.(fig..5).
–. Prepare..one.of.the.two.intermediate.hea-
ting.elements.with.a.1/2".perforated.stud,.
lubricating.the.conical.nipples.with.boiled.
linseed. oil. before. introducing. them. (fig..
5/a).
–. Prepare.the.head,.following.the.same.pro-
cedure,.and.bring.it.into.position.adjacent.
to.the.intermediate.element..Add.only.one.
element.at.a.time.
–. Assemble. the. heating. elements. using. the.
pair. of. tie. rods. supplied. assembled. with.
their. accessories,. code. 6050900. (fig.. . 6),.
exerting.pressure.on.the.upper.hub.and.on.
the.lower.hub.simultaneously..In.the.event.
that.the.elements.should.not.move.forward.
in.parallel.during.this.operation,.introduce.
the.chisel.into.the.tighter.part.and.force.the.
two.parts.to.be.joined.into.parallel..The.two.
elements. are. properly. joined. when. their.
outer.edges.come.into.contact..
–. Introduce.the.plaster.seam.into.the.groove.
in. the. element. just. mounted. and. proceed.
to.join.the.other.elements.until.the.body.is.
complete.
NOTE: Before making the connection with
the heating system, test the cast iron body
at a pressure of 7.5 bar.
Tetto piano
Flat roof
Tetto a 30°
30° roof
Tetto a 45°
45° roof
TABLE 1
. Thermal.capacity.
. kW.
RS 129 Mk II. 145,9.
RS 151 Mk II
170,0.
RS 172 Mk II 194,2.
RS 194 Mk II 218,2.
RS 215 Mk II
242,1.
RS 237 Mk II 266,0.
RS 258 Mk II 290,0.
RS 279 Mk II
313,6.
≤ 5 m
> 5 m
Volume
tecnico
> 1,30 m
Colmo
≤ 1,30 m
30°
> 1,50 m
Colmo
≤ 1,50 m
Zona di reflusso
45 °
Flue.gas.temperature.. Flue.gas.rate.of.flow.
°C.
154.
170.
173.
153.
160.
143.
148.
154.
Fig..5
Zona di reflusso
Fig..4
gr/s
109,4
111,7
118,6
160,8
164,2
206,9
213,6
212,5
Fig..5/a
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