Instructions for use
7
9
Fig. 2.10
In these cases, however, it is advisable to install a
small water treatment device or softener. With
such a device you should avoid periodic descal-
ing.
Consequently, the d.h.w. heat exchanger will keep
its performance consistent for a longer period of
time with resulting gas savings.
If the demand for d.h.w. is so great as to prevent
reaching a high enough temperature, have the ap-
propriate output limiting valve installed by your in-
staller or an Authorised Service Engineer.
2.6
Extinguishing
To turn the boiler off set the function selector 8 to
the position shown in Fig. 2.11.
The appliance operation light 10 will flash every 4
seconds.
8
10
Fig. 2.11
When you do not expect to use the boiler for a long
period:
1 Switch off the electricity supply to the boiler, by
means of the fused spur isolation switch;
2 Shut off the gas supply cock 14 and the valves
for the water circuits fitted under the boiler
(Fig. 2.12).
3 Empty the water circuits, if necessary, as
shown in the
installation instructions
in the sec-
tion
maintenance
.
Closed position
14
Fig. 2.12
2.7
Built in time switch
The combi boilers are equipped with a built in elec-
tronic time switch (5, Fig. 1.3 on page 2) which
controls the c.h. operation.
J
A
B
C
D
E
F
G
I
H
Fig. 2.13
Display and control panel
A Mode selector switch
B Reset button
C Enter button
D Increase “+” setting button
E Decrease “---” setting button
F On---off button
G Day selection buttons
USE
