Sime MURELLE HM - 3.9 HEAD AVAILABLE TO SYSTEM (fig. 14)

108
replaced. The electronic board is faulty.
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.
3.9 HEAD AVAILABLE
TO SYSTEM (fig. 14)
Residual head for the heating system is
shown as a function of rate of flow in the
graph in fig. 14. The speed of the modula-
ting pump WILO-YONOS PARA PWM is set
as default (installation parameter PAR 13
= - - ).
0
600
200 12001000800600400
PORTATA (l/h)
PREVALENZA RESIDUA (mbar)
500
400
100
200
300
Murelle HM (WILO YONOS PARA)
700
800
Fig. 14
RESIDUAL HEAD (mbar)
FLOW RATE (l/h)