ler.gas.conversion.kit,.pressure.regulator
.
(3...20. mbar). with. pressure. regulator
.
(4...37. mbar). and. apply. the. LPG. adaptor.
code.6248303.onto.the.gas.valve.(5.fig..10).
for.“70÷100 Mk.II” models..
To.adjust.the.operating.pressures,.refer.
to.section.4.2..
When the working pressures have been
adjusted, reseal the regulators.
After. have. ultimated. the. conversion. of.
the. boiler,. please. stick. onto. the. casing.
panel. the. plate. showing. the. relevant.
feeding. gas. which. is. included. into. the.
conversion.kit.
NOTE: After assembling all the gas con-
nections, a test for gas tightness must
be carried out using soapy water or spe-
cial products. Do not use naked flames.
The conversion to different gas must be
carried out exclusively by authorized
technical personnel.
4.5
SHELL DISASSEMBLY (fig. 12)
Follow. the. steps. described. below. to.
disassemble.the.shell.(fig..12):
–. Remove. the. shell. door. (1). which. is.
attached.with.pressure.fit.pins.
–. To.remove.the.cover.(3).loosen.the.two.
screws. that. attach. it. to. the. flue. gas.
chamber.and.lift.
–. Remove.the.top.front.panel.(2).placing.
it.against.the.flue.gas.chamber.
–. Disassemble. the. left. side. (4).
unscrewing. the. nuts. that. attach. it. to.
the.tie.rods.
–. Do.the.same.operation.to.disassemble.
the.right.side.(5).
–. Remove.the.inner.wall.(6).by.pulling.it.
forward.
–. Unscrew.the.nuts.that.secure.the.rear.
wall.(7).to.remove.it.from.the.tie.rods.
4.6
CLEANING AND
MAINTENANCE (fig. 13)
At. the. end. of. each. heating. season,. it. is.
essential. to. have. the. boiler. thoroughly.
checked.and.cleaned.out.
Proceed.as.follows:
–. Turn.the.main.switch.off.to.stop.elec-
tric. power. reaching. the. boiler. and.
close.the.gas.feed.cock.
–. Remove.the.shell.door.and.cover.
–. Remove. the. top. panel. of. the. flue. gas.
chamber.attached.to.it.with.self-thre-
ading.screws.
–. Remove.the.gas.unit.
–. Insert. a. special. brush. from. the. top.
into. the. rows. of. pins. in. the. cast. iron.
exchanger.and.move.the.brush.up.and.
down.to.remove.the.scales.
–. Remove. the. burner. from. the. nozzle.
header. and. aim. a. jet. of. air. toward.
the. inside. of. the. burners. to. remove.
any.dust..Make.sure.that.there.are.no.
scales. on. the. top. drilled. part. of. the.
burners.(fig..13).
–. Remove.any.scales.from.the.bottom.of.
the. boiler. and. replace. the. items. that.
were. removed,. checking. the. position.
of.the.gaskets.
–. Check.the.chimney.to.make.sure.that.
the.flue.is.clean.
–. Check.operation.of.the.equipment.and.
the.main.burner.
–. After. assembly. of. all. the. gas. con-
nections,. these. must. be. tested. for.
soundness,. using. soapy. water. or.
appropriate. products.. DO. NOT. USE.
NAKED.FLAMES..
Preventive maintenance and checking
of efficient operation of equipment
and safety devices must be carried out
exclusively by authorized technical per-
sonnel.
50
Fig..12
