28
– remove the screws (3) securing the control panel (4)
– move the panel (4) upwards (a) but keeping it in the side
guides (5) to the end of travel
– bring it forwards and down (b) until it is horizontal
3
a
b
5
4
Fig. 29
– insert the connection wires into the cable gland (6) and the
opening (7) on the control panel
6
7
Fig. 30
– bring the control panel (4) to the original position and secure
it with the screws (3) which were removed previously
– connect the component wires to the terminal board (8)
following the indications provided on the data plate (9).
3
4
8
9
SE
CR-TA
SAUX
6
5
4
3
2
1
Fig. 31
m
CAUTION
It is compulsory:
– to use an omnipolar cut-off switch, disconnect
switch in compliance with AS/NZS Standards
– if the power cable is to be replaced, that ONLY
a special cable is used with a factory produced
re-wired connector, ordered as a spare part and
connected by a professionally qualified person
– to connect the earth wire to an effective earthing
system (*)
– that before any intervention on the boiler, the mains
power is disconnected by setting the main system
switch to "OFF".
(*) The manufacturer is not responsible for any damage
caused by failure to earth the appliance or failure to
observe the information provided in the wiring diagrams.
d
IT IS FORBIDDEN
To use water pipes for earthing the appliance.
8.13.1 External sensor
The boiler is prearranged for connection to an external air
temperature sensor and can operate with a sliding temperature.
This means that the delivery temperature sent to the boiler can
vary on the basis of the external temperature depending on the
climatic curve selected from those shown in the diagram (Fig.
When fitting the sensor on the outside of the building, follow
the instructions provided on the packaging of the product itself.
Climatic curve
Delivery temperature
20
15
10
5
0
-10
-15
-5
-20
80
90
70
60
50
40
30
20
°C
°C
K=9
K=6 K=4.5
K=3
K=2.2
K=1.5
K=0.75
External temperature
Fig. 32
m
CAUTION
If there is an external sensor, in order to select the
optimal climatic curve for the system and therefore
the delivery temperature based on the external
temperature:
– press the button
t
for 1 second
– press buttons
>
or
<
until the required curve K has
been selected (within the range
K=0.0 - K=9.0
).
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