Sime FORCED 200 Manual Del Usaurio página 50

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PIPING AND INSULATION
The.pipes.that.connect.the.solar.collector.to.the.boiler.hydraulic.unit.must.be.made.of.copper.or.stainless.steel.(fitted.
hose.reel.made.of.AISI.316L.stainless.steel.2x2.insulated).and.must.have.an.outer.diameter.of.10.mm.(no.greater,.no.
smaller).
The.pipes.must.never.be.made.of.galvanised.steel.due.to.galvanic.currents.and.incompatibility.problems.with.the.an-
tifreeze. liquid;. moreover,. they. must. never. be. multi-layers. for. problems. related. to. the. high. temperature. that. can. be.
reached.
The.pipes.of.the.primary.circuit.must.be.well.insulated.to.minimise.thermal.loss.
The.section.of.the.pipe.close.to.the.solar.collector.must.be.insulated.with.material.resistant.to.temperatures.close.to.
150°C..Connection.pipes.can.be.made.of.stainless.steel.or.copper..
If.they.are.made.with.copper,.we.recommend.a.strong.brazing.(castolin,.silver.alloy,.etc).to.ensure.seal.at.high.tempera-
ture..For.copper.pipes.in.domestic.systems,.we.recommend.expanded.elastomer.insulation,.specific.for.solar.systems,.
having.a.minimum.thickness.of.19.mm.(and.in.any.case.compliant.with.the.standards.in.force),.resistant.to.weather.agents.
and.coated.on-site.with.adhesive.aluminium.tape.for.the.section.exposed.to.bad.weather..
For.medium-large.systems,.we.recommend.using.rock-wool.insulation,.40.mm.thick,.(and.in.any.case.compliant.with.
the.standards.in.force).coated.with.aluminium.sheet.for.the.section.exposed.to.bad.weather.and.with.PVC.for.the.section.
located.indoors.
The.pipes.that.connect.the.solar.collector.to.the.boiler.hydraulic.unit.must.be.always.downhill;.therefore,.there.must.not.
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Fig..14