2
INSTALLATION
The. boiler. should. be. installed. in. a.
fixed. location. and. shall. be. carried.
out. only. by. specialized. and. qualified.
firms. in. compliance. with. all. instruc-
tions.contained.in.this.manual.
2.1
BOILER ROOM
AND VENTILATION
There. are. no. particular. regulations.
to.follow.with.reference.to.the.boiler.
room. because RX 19-26 TP boilers,.
which.do.not.exceed.the.35.kW.limit,.
can. be. installed. in. rooms. that. are.
sufficiently.ventilated..
The. rooms. where. the. gas-fired.
systems. are. installed. must. receive.
at.least.the.quantity.of.air.necessary.
for.the.normal.combustion.of.the.gas.
used.by.the.various.installations..
Therefore,. to. ensure. the. air. circula-
tion. in. the. rooms,. it. is. necessary. to.
make.some.holes.in.the.walls..
These.holes.must.have.the.following.
characteristics:
–. Have. e. total. free. surface. of. mini-
mum.6.cm
2
.for.each.kW.of.thermal.
capacity,. for. a. minimum. of. 100.
cm
2
.
–. They. must. be. located. as. close. as.
possible.to.floor.level,.not.prone.to.
obstruction.and.protected.by.a.grid.
which.does.not.reduce.the.effective.
section.required.for.the.passage.of.
air.
The RX 37÷55 TP models.with.a.capa-
city.exceeding.35.kW.shall.instead.be.
installed.in.a.boiler.room.that.meets.
the. existing. safety. regulations. for.
network. gas-fired. heating. systems,.
where. minimum. distances. must. be.
observed.
2.2
BOILER CONNECTION
To. protect. the. heat. system. from.
damaging. corrosion,. incrustation. or.
deposits,.after.installation.it.is.extre-
mely. important. to. clean. the. system.
using. suitable. products. such. as,.
for. example,. Sentinel. X300. or. X400..
Complete. instructions. are. provided.
with. the. products. but,. for. further.
information,.you.may.directly.contact.
GE.Betz.
For.long-term.protection.agains.cor-
rosion.and.deposits,.the.use.of.inhibi-
tors.such.as.Sentinel.X100.is.recom-
mended.after.cleaning.the.system..It.
is.important.to.check.the.concentra-
tion.of.the.inhibitor.after.each.system.
modification.and.during.maintenance.
following.the.manufacturer's.instruc-
tions. (specific. tests. are. available. at.
your. dealer).. The. safety. valve. drain.
must. be. connected. to. a. collection.
funnel.to.collect.any.discharge.during.
interventions..
WARNING: Failure to clean the heat
system or add an adequate inhibitor
invalidates the device's warranty.
Gas. connections. must. be. made. in.
accordance. with. current. standards.
and. regulations.. When. dimensio-
ning.gas.pipes.from.the.meter.to.the.
module,. both. capacity. volume. (con-
sumption). in. m
3
/h. and. gas. density.
must.be.taken.into.account..
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.(buta-
ne.or.propane).
A. sticker. inside. the. module. includes.
identification. and. gas. type. data. spe-
cific.to.the.module.
2.2.1 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.
2.3
FLUE
A.flue.for.the.discharge.into.the.atmo-
sphere.of.the.products.of.combustion.
of. natural. draught. plants. must. have.
the.following.characteristics:
–. be. sealed. against. the. products. of.
combustion,. waterproof. and. insu-
lated;
–. be. made. of. materials. capable. of.
withstanding. normal. mechanical.
stresses,.heat.and.the.action.of.the.
products. of. combustion. and. their.
condensate;
–. be. vertical. and. with. no. narrowing.
throughout.its.whole.length;
–. be. properly. insulated. to. avoid. flue.
gases.condensing.or.cooling,.espe-
cially. if. it. is. placed. outside. a. buil-
ding.or.in.rooms.with.no.heating;
–. be. kept. at. a. safe. distance. from.
combustible. and. easily. inflamma-
ble.materials.by.an.air.space.or.any.
other.suitable.insulating.material;
–. have. a. chamber. collecting. solid.
materials. and. condensates. below.
the. mouth. of. the. first. flue;. . this.
chamber.must.be.at.least.500.mm.
high..Access.to.this.chamber.must.
be.ensured.through.a.hole.with.an.
airtight.metal.door;
–. its. inner. section. must. be. round,.
square.or.rectangular;.if.it.is.squa-
re.of.rectangular,.the.corners.must.
be. round. and. have. a. radius. of. 20.
mm. minimum;. however,. hydrauli-
cally. equivalent. sections. are. also.
permitted;
–. be. topped. by. a. chimneypot. having.
its. outlet. outside. the. reflux. area.
in. order. to. avoid. back. pressu-
res. which. may. obstruct. the. free.
discharge.of.flue.gas.into.the.air;
–. there.must.be.no.mechanical.suc-
tion. equipment. at. the. top. of. the.
pipe;
–. there. must. be. no. overpressure. in.
stacks.placed.inside.or.adjacent.to.
inhabited.rooms.
2.3.1 Flue connection (fig. 4)
Fig..4.refers.to.the.boiler.connection.
Inclination
Fig..4
39