Sime Murelle EV HE 25/55 Manual De Instrucciones página 89

3.8 WATER
FLOW
GUAGE
The water flow gauge (4 fig. 3) intervenes,
blocking burner functioning, in case the boi-
ler is lacking of water for formation of air
600
500
400
300
200
100
0
200
bubbles in the heat exchanger and the case
the pump not functions.
N.B.: when replacing the flow meter valve,
verify that the arrow printed on its body
is pointing in the same direction of the
water flow.
400 600
3.9 HEAD AVAILABLE TO SYSTEM
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 is set as default (installation
parameter PAR 13=1).
30/55
25/55
800 1000
PORTATA (l/h)
FLOW RATE (l/h)
ES
PT
ENG
1200
Fig. 14
89