shorting.of.the.electrode.cable.or.by.
its.improper.fixing.to.the.connection.
points.. The. electrode. is. connected.
to.the.earth.or.badly.worn.and.must.
be.replaced..The.electronic.board.is.
faulty.
800
700
600
500
400
300
200
100
0
500
1 - POMPA FISSA
Flow rate
Portata
(l/h)
(l/ h)
0
400
800
1200
1600
2000
2400
2800
3200
3600
4000
4082
800
700
600
500
400
300
200
10 0
0
500
WILO-STRATOS PARA
Portata
62
(l / h )
0
400
800
In. the. case. of. a. sudden. lack. of. voltage,.
the. burner. will. immediately. switch. off..
When. voltage. returns,. the. boiler. will.
automatically.start.up.again.
1000
1500
Residual head
PREVALENZA
(mbar)
(mbar)
778
748
730
701
662
611
555
498
432
353
272
258
1500
1000
PREVALENZA
(mbar)
782
773
763
3.8
Residual.head.for.the.heating.system.(1)
is. shown. as. a. function. of. rate. of. flow. in.
the.graph.in.fig..14.
2000
250 0
2 - POMPA MODULANTE WILO-STRATOS PARA (M)
Portata
PREVALENZA
(l/ h)
(mbar)
0
782
400
773
800
763
1200
748
1500
737
2000
708
2500
655
3000
554
3500
448
4000
354
2000
250 0
HEAD AVAILABLE
TO SYSTEM (fig. 14)
2
1
400 0
300 0
350 0
FLOW.RATE.(l/h)
PORTATA (l/h )
Fig..14
300 0
350 0
400 0
PORTATA (l/h )