Climit GG BT Serie Manual Del Usuario página 85

The value of the signal to the pressure swit-
ch is measured by a differential pressure
gauge connected as indicated in fig. 16.
3. 1 0 HEAD AVAILABLE
TO SYSTEM (fig. 17 - fig. 17/a)
Residual head for the heating system is
shown as a function of rate of flow in the
graph in fig. 17.
To obtain the maximum head available to
the system, turn off the by-pass by turning
the union to the vertical position (fig. 17/a).
NOTE: The expansion vessel supplied with
the boiler is suitable for heating systems
with a maximum water capacity of 80
litres. In excess of such capacity, arrange
for an additional expansion vessel.
3. 1 1 WATER PRESSURE VALVE
(fig. 17/a)
The water pressure valve (C fig. 17/a)
intervenes, blocking burner functioning, if it
detects that there is insufficient pressure
in the boiler (< 0,6 bar).
To restore burner functioning, to bring back
the pressure of the boiler at values compri-
se between 1 - 1,2 bar.
SEALED CHAMBER
CAMERA STAGNA
(--)
(+)
PRESSURE SWITCH
PRESSOSTATO
600
500
20-25
400
300
200
100
0
C
VENTILATORE
FAN
20-25
200 400 600 800 1000
REFERENCE POSITION BY-PASS
A RIFERIMENTO POSIZIONE BY-PASS
Fig. 16
By-pass on
By-pass inserito
By-pass off
By-pass escluso
30
30
1200 1400
1600
PORTATA (l/h)
FLOW RATE (l/h)
Fig. 17
LEGENDA
A By-pass on
B By-pass off
C Water pressure valve
B
Fig. 17/a
IT
ES
ENG
85