5
c.
When the appliance is “only hea ng” mode the display shows ( ) sign.
To adjust the desired central hea ng temperature use (+/-) bu ons with figure.
With “only hea ng” mode pump an blocking and an -frost protec on func ons are
ac ve.
WARNING:
When the boiler switches on a er a heat demand (when the burner is on),
( ) sign is show in the display.
5. FILLING THE BOILER
Filling water is supplied through the filling valve located in the bo om of the boiler, Figure 3.
When the boiler is cold the installa on should be filled such that the manometer located in
the front of the boiler, (Figure 2) indicates a water pressure between 1-1,5 bar. When the
pressure drops to the cri cal level the appliance shuts-off automa cally.
Figure 2
Figure 3
A
Central hea ng flow
Domes c hot water out
B
Gas inlet
C
Cold water inlet
D
E
Central hea ng return
K
Filling valve
G
Condensate syphon
