The. boiler. must. be. installed. in. a. fixed.
location. and. only. by. specialized. and.
qualified. firms. in. compliance. with. all.
instructions.contained.in.this.manual.
Furthermore,.the.installation.must.be.in.
accordance. with. current. standards. and.
regulations.
2.1
BOILER ROOM
AND VENTILATION
The.
“LOGO”
version.boilers.with.less.than.
35.kW.power.can.be.installed.in.domestic.
environments. when. simply. replacing. or.
in. a. plant. room. complying. with. current.
standards.In.rooms.where.open.chamber.
gas.appliances.are.installed,.it.is.impor-
tant.that.at.least.as.much.air.at.least.as.
much.air.can.arrive.as.required.by.nor-
mal.combustion.of.the.gas.consumed.by.
the.various.appliances..
The.minimum.distance.between.the.boi-
ler. and. inflammable. materials. has. to.
be. . ≥. 200. mm.. Consequently,. it. is.
necessary. to. make. openings. in. the.
walls. for. the. air. inlet. into. the. rooms.
(around.2.m
3
/h.for.each.kW.of.heat.input)..
These.openings.must.meet.the.following.
requirements:
–. Have.a.total.free.section.of.at.least.6.
cm
2
.for.every.kW.of.heat.input,.with.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.
2.2
CONNECTING UP SYSTEM
Before.proceeding.to.connect.up.the.boi-
ler,. you. are. recommended. to. make. the.
air. circulating. in. the. piping. in. order. to.
eliminate. any. foreign. bodies. that. might.
be.detrimental.to.the.operating.efficiency.
of. the. appliance.. It. is. always. advisable.
to. put. intercepting. sluice. gates. on. the.
C.H..flow.and.return.tubes..The.gas.con-
nection. must. be. made. using. seamless.
steel. pipe. (Mannesmann. type),. galva-
nized. and. with. threaded. joints. provi-
ded. with. gaskets,. excluding. three-piece.
connections,. except. for. initial. and. end.
connections.. Where. the. piping. has. to.
pass.through.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. guaran-
tee. 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).
94
2
INSTALLATION
1
2
3
4
2
5
6
7
8
9
10
11
12
15
13
14
Fig..3/b
“LOGO 32/80 OF” version
KEY
. 1. Control.panel
. 2. Non.return.valve
. 3. Air.vent.valve
. 4. D.H.W..circulating.pump
. 5. C.H..circulating.pump
. 6. Manual.filling.group
. 7. Magnesium.anode
. 8. D.H.W..tank.drain.cock
. 9. D.H.W..tank
.10. Boiler.drain.cock
.11. Burners.manifold
.12. Pilot.burner
.13. Gas.valve
.14. Gas.pressure.switch
.15. Ignition.transformer
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