Sime RMG 100 P, Installer'S Instructions

Page: 39 / 52

5,000.cm
2
.for.gas.with.a.density.gre-
ater.than.0.8.
2.1.1 Handling
Once.the.boiler.is.in.its.place.of.instal-
lation. and. the. packaging. has. been.
removed,.proceed.as.follows.if.it.must.
be.moved.(fig..3/a):
–. remove.the.casing.cover;
–. attach. the. lifting. brackets. (located.
on.the.rear.of.the.boiler).and.fasten.
it.in.place.with.the.screws.provided;
–. insert.two.3/4”.pipes.in.the.holes.in.
the.brackets,.lift.the.boiler.carefully.
and.place.into.position.
2.2 CONNECTING
UP SYSTEM
Before. proceeding. to. connect. up. the.
boiler,.you.are.recommended.to.make.
the. water. circulating. in. the. piping. in.
order. to. eliminate. any. foreign. bodies.
that.might.be.detrimental.to.the.ope-
rating.efficiency.of.the.appliance..
The. unit. must. be. connected. up. with.
rigid.pipe.fittings.which.will.not.subject.
it.to.stress.of.any.kind..
The. connections. should. be. easy. to.
disconnect. using. pipe. unions. with.
orientable. connections.. You. are.
recommended.to.install.suitable.shu-
toff. valves. on. the. system. flow. and.
return.pipes..
In order to achieve a good water
distribution inside the cast-iron body,
the system flow and return pipes
should be connected to the same side
of the boiler.
.
The boiler comes supplied standard
with the attachments on the right-
hand side, with the possibility of them
being transferred to the left-hand
side.
In that case, move the water distribu-
tor, located on the return header, and
the thermostat bulbs located in the
sheathe, to the same side.
The. thermal. jump. between. the.
system. flow. and. return. pipes. should.
not. exceed. 20°C.. For. this. purpose,. it.
is. advisable. to. install. a. mixer. valve.
with.corresponding.anti-condensation.
pump.
CAUTION: The system circulation
pump or pumps must go into action
at the time of boiler ignition.
For this purpose, you are recommen-
ded to use an automatic system of
precedence.
The. gas. connection. must. be.
made. using. seamless. steel. pipe.
(Mannesmann. type),. galvanized. and.
with. threaded. joints. provided. with.
gaskets,. excluding. three-piece. con-
nections,. except. for. initial. and. end.
connections..
Where. the. piping. has. to. pass. throu-
gh. walls,. a. suitable. insulating. sleeve.
must.be.provided..
When.sizing.gas.piping,.from.the.meter.
to. the. boiler,. take. into. account. both.
the. volume. flow. rates. (consumption).
in.m
3
/h.and.the.relative.density.of.the.
gas.in.question..
The.sections.of.the.piping.making.up.
the. system. must. be. such. as. to. gua-
rantee. a. supply. of. gas. sufficient. to.
cover.the.maximum.demand,.limiting.
pressure.loss.between.the.gas.meter.
and. any. apparatus. being. used. to. not.
greater.than:
–. 1.0.mbar.for.family.II.gases.(natural.
gas);
–. 2.0.mbar.for.family.III.gases.(butane.
or.propane).
An.adhesive.data.plate.is.sticked.insi-
de. the. front. panel;. it. contains. all. the.
technical. data. identifying. the. boiler.
and.the.type.of.gas.for.which.the.boiler.
is.arranged.
2.3 CHARACTERISTICS
OF FEEDWATER
It.is.absolutely.essential.that.the.water.
used. for. the. central. heating. system.
should. be. treated. in. the. following.
cases:
–. Very. extensive. systems. (with. high.
contents.of.feedwater).
–. Frequent.addition.of.makeup.water.
into.the.system.
–. Should.it.be.necessary.to.empty.the.
system.either.partially.or.totally.
2.3.1 Filter on the gas pipe
The. gas. valve. is. supplied. ex. factory.
with.an.inlet.filter,.which,.however,.is.
not. adequate. to. entrap. all. the. impu-
rities.in.the.gas.or.in.gas.main.pipes.
To.prevent.malfunctioning.of.the.valve,.
or.in.certain.cases.even.to.cut.out.the.
safety. device. with. which. the. valve. is.
equipped,.install.an.adequate.filter.on.
the.gas.pipe.
2.4 SYSTEM FILLING
Filling. must. be. done. slowly. so. as. to.
allow. any. air. bubbles. to. be. bled. off.
through.the.air.vents.provided.on.the.
heating.system..
The. pressure. of. cold. charging. of. the.
system,. and. the. pressure. of. pre-
pressurization. of. the. expansion. ves-
sel,. must. correspond,. or. in. any. case.
must. not. be. less. than,. the. height. of.
the.static.column.of.the.system.(e.g.,.
for. a. static. column. of. 5. m,. the. pre-
pressurization.pressure.of.the.expan-
sion.vessel.and.the.charging.pressure.
must.correspond.to.at.least.0.5.bar).
2.5 CONNECTING UP FLUE
The.flue.for.the.atmospherical.expul-
sion.of.the.combustion.products.from.
natural.draught.appliances.must.meet.
the.following.requirements:
–. Be.gas-tight.to.the.combustion.pro-
39
Fig..3/a