Sime SOLO 20 OF Instrucciones Para El Instalador página 80

along its travel. This will keep both
outlets, heating and sanitary, par-
tially open.
4.4 DISASSEMBLY
OF OUTER CASING
The. shell. can. be. completely. disas-
sembled.for.an.easy.maintenance.of.
the. boiler. by. following. the. numeric.
steps.shown.in.fig..14.
4.5 DISASSEMBLY
OF EXPANSION
VESSEL
.
The.heating.expansion.tank.is.disas-
sembled.in.the.following.manner:
–..Make. sure. that. the. boiler. has.
been.emptied.of.water.
–..Unscrew. the. union. which. con-
nects.the.expansion.tank.
–..Remove.the.expansion.tank.
Before. filling. up. the. system. make.
sure. that. the. expansion. tank. is.
reloaded. at. the. pressure. of. 0.8. ÷. 1.
bar.
4.6 BURNER MAINTENANCE
To. dismantle. the. burner. from. the.
boiler.door,.remove.the.nut.(fig..15).
–. To.access.the.internal.part.of.the.
burner,. remove. the. air. lock. unit.
held. in. place. by. two. screws. to.
the. sides. and. remove. the. right.
hand.shell,.which.is.held.in.place.
by.four.screws,.taking.care.not.to.
damage.the.O-ring.seal..OR.
–. To. dismantle. the. nozzle. holder.
and. heater. unit,. proceed. as. fol-
lows:
–. open.the.cover,.which.is.held.in.
place. by. a. screw,. and. remove.
the. heater. cables. (1. fig.. 15/a).
protected. by. a. heat. resistant.
sheath;.remove.the.fairlead.and.
pass. the. cables. through. the.
hole.
–. remove.the.two.cables.from.the.
ignition. electrodes. fastened. in.
place.with.a.faston.
–. loosen.the.union.(2.fig..15/a).and.
remove. the. four. screws. which.
fasten. the. collar. (3. fig.. 15/a). to.
the.burner.
–. To. dismantle. the. eater. or. ther-
mostat,.refer.to.figure.15/b.
78
4
5
2
1
3
KEY
. 1. Control.bow.cables
. 2. Connection
. 3. Collar
2
6
3
1
Fig..14
Fig..15
Fig..15/a