Sime SOLO 20 OF Instrucciones Para El Instalador página 71

2 INSTALLATION
2.1 BOILER ROOM
The. boilers. with. a. rating. of. more.
than. 35. kW. must. be. equipped. with.
a.technical.room.whose.dimensions.
and.requirements.correspond.to.the.
current.standards.and.regulations..
The. minimum. distance. between. the.
walls. of. the. room. and. the. boiler.
must.not.be.less.than.0.60.m.,.while.
the.minimum.height.between.the.top.
of.the.boiler.and.the.ceiling.must.be.
at. least. 1. m.. which. can. be. reduced.
to. 0.50. m.. for. boilers. with. incorpo-
rated.heaters.(however.the.minimum.
height. of. the. boiler. room. must. not.
be.less.than.2,5.m)..The.boilers.with.
a. rating. of. less. than. 35. kW. can. be.
installed. only. in. perfectly. air-vented.
rooms.. To. circulate. air. in. the. room,.
air. vents. must. be. made. on. the. out-
side.walls.which.satisfy.the.following.
requirements:
–..Have. a. total. surface. area. of. at.
least. 6. cm 2 . for. each. installed. Kw.
of. thermal. capacity. and. however.
not.less.than.100.cm 2 .
–..To.be.situated.as.close.as.possible.
to. the. floor,. unobstructable. and.
protected. by. a. grate. which. does.
not.reduce.the.air.passage.area.
2.2 CONNECTING UP SYSTEM
Before. proceeding. to. connect. up.
the.boiler,.you.are.recommended.to.
make.the.water.circulate.in.the.pip-
ing.in.order.to.eliminate.any.foreign.
bodies.that.might.be.detrimental.to.
the.operating.efficiency.of.the.appli-
ance.. For. connecting. up. the. pipes,.
make. sure. to. follow. the. indications.
illustrated.in.fig..1..The.connections.
should. be. easy. to. disconnect. using.
pipe.unions.with.orientable.connec-
tions..
The shutoff valve must be connect-
ed to a suitable flow system and
return pipes
2.2.1 System filling
The. boiler. and. the. relative. system.
must. be. filled. operating. on. the.
bearing. tap. and. the. pressure. of.
cold. charging. the. system. must. be.
included.between.1 - 1.2 bar..During.
filling.the.main.switch.should.be.left.
open..
Filling.must.be.done.slowly.so.as.to.
allow. any. air. bubbles. to. be. bled. off.
through.the.provided.air.vents..This.
operation.can.be.made.easy.by.posi-
tioning. horizontally. the. incision. of.
the.block.screw.of.the.shutoff.valve..
Upon. completing. the. filling,. put. the.
screw.back.to.its.original.position..At.
the.end.of.the.operation.make.sure.
that.the.tap.is.closed.(fig..4).
OPEN
1
0
2.2.2 D.H.W. production on
"DUETTO OF/BF"
version
When. hot. treated. water. is. required.
in.the."DUETTO OF/BF".version,.the.
switch.which.commutes.the.diverter.
valve. is. immediately. inserted. sup-
plying.hot.water.practically.at.once.
To. adjust. water. flow. use. the. water.
pressure. gauge. flow. regulator. (fig..
5):
-..Turn. clockwise. and. the. regula-
tor. reduces. water. supply. conse-
quently. increasing. the. relevant.
temperature.
-..Turn. counter-clockwise. and. the.
regulator. increases. water. supply.
consequently. reducing. the. rele-
vant.temperature.
FLOW.
REGOLATORE
REGULATOR
DI PORTATA
2.2.3 Characteristics of feedwa-
ter
To.prevent.lime.scale.and.damage.to.
the. tap. water. exchanger,. the. water.
supplied. should. have. a. hardness. of.
no.more.than.20°F..
In. all. cases. the. water. used. should.
be. tested. and. adequate. treatment.
devices.should.be.installed..
To.prevent.lime.scale.or.deposits.on.
the. primary. exchanger,. the. water.
used. to. supply. the. heating. circuit.
should.must.be.treated.in.accordan-
ce.with.UNI-CTI.8065.standards..It.is.
absolutely. essential. that. the. water.
is. to. be. treated. in. the. following.
cases:
–. Very.extensive.systems.(with.high.
contents.of.feedwater).
–. Frequent. addition. of. makeup.
water.into.the.system.
2
Fig..4
–. In.case.it.is.necessary.to.empty.the.
bar
3
system.either.partially.or.totally.
4
2.3 SMOKE EXHAUST
2.3.1 Connecting up flue
The. flue. is. of. fundamental. impor-
tance. for. the. proper. operation. of.
the.boiler;.if.not.installed.in.compli-
ance.with.the.standards,.starting.the.
boiler.will.be.difficult.and.there.will.
be. a. consequent. formation. of. soot,.
condensation.and.encrustation..
A.flue.therefore.must.satisfy.the.fol-
lowing.requirements:
–. be. constructed. with. waterproof.
materials. and. resistant. to. smoke.
temperature.and.condensate;
–. be. of. adequate. mechanical. resil-
ience.and.of.low.heat.conductivity;
–. be. perfectly. sealed. to. prevent.
cooling.of.the.flue.itself:
–. be.as.vertical.as.possible;.the.ter-
minal. section. of. the. flue. must. be.
fitted.with.a.static.exhaust.device.
that. ensures. constant. and. effi-
cient. extraction. of. products. gen-
erated.by.combustion;
–. to.prevent.the.wind.from.creating.
pressure.zones.around.the.chim-
ney. top. greater. than. the. uplift.
force. of. combustion. gases,. the.
exhaust.outlet.should.be.at.least.
0.4. m. higher. than. structures.
adjacent. to. the. stack. (including.
the.roof.top).within.8.m;
–. have. a. diameter. that. is. not. infe-
rior. to. that. of. the. boiler. union:.
square. or. rectangular-section.
flues.should.have.an.internal.sec-
Fig..5
tion. 10%. greater. than. that. of. the.
69