ENGLISH
25
4.3 Switching off for short periods
In case of temporary absences for weekends, short trips, etc.:
-
Turn the main dial (fig. 16 -
A
) on the control panel to the “ ” position.
- Turn the main system dial to “OFF”.
fig. 17
-
Check that the green light switches off (fig. 16 -
C
).
4.4 Switching off for long periods
If the boiler is not going to be used for a long period of time:
-
Turn the main dial (fig. 18 -
A
) on the control panel to the “ ” position.
A D B
C
fig. 18
- Turn the main system dial to “OFF”.
fig. 19
-
Check that the green light switches off (fig. 18 -
C
).
- Shut-off the gas valve and water taps.
fig. 20
b
Empty the system if there is a risk of freezing.
The Technical Support Service is available for advice, should it not be pos-
sible to implement the above procedure easily.
4.5 Operation
The “thermostatic” power to this appliance automatically varies, meaning
that it adjusts gas consumption in line with the quantity of water requested.
The temperature of the water withdrawn varies from 35°C to 60°C accord-
ing to the position of the temperature selection potentiometer. Unlike tradi-
tional fixed-flame appliances, this appliance is fitted with a modulating valve
which optimises performance. It allows the appliance to operate with lower
water pressure and flow, modulating the flame in relation to the quantity
of water withdrawn, so as to keep the temperature constant (see graph).
The appliance is fitted with a flame-ionisation automatic ignition. Each time
water is withdrawn, the burner flame is automatically turned on and remains
on while in operation.
4.6 Withdrawal range graph
The graphs below show the operating range of the appliance’s electronic
modulation.
Using the temperature selection dial (
fig. 18 -
B
), the temperature of the
hot water requested can be selected from between the minimum and the
maximum.
By turning the dial (
fig. 18 -
B
) to an intermediary point, the temperature of
the water provided is between the minimum and maximum values that can
be selected.
The outer curves in the graphs refer to the temperatures obtained in rela-
tion to the water flow rate with the dial (fig. 18 -
B
) set to the minimum or
maximum positions.
The temperatures shown refer to stable conditions with the cold water sup-
ply temperature at 15 ±1°C, with a tolerance of ± 0.5 l/min of the water flow
rate provided and of ±2°C of the hot water temperature obtained. The tem-
peratures shown in the graph are read at the boiler hot water outlet pipe.
The flow limiter allows the set temperature of the hot water provided to be
adjusted at any time, within the specified limits.
As a result, the permitted operating range (with the limiter in position) is that
shown by the curves and the dotted vertical line corresponding to the water
flow limiter value.
If very little water is withdrawn (around 2-2.5 l/min.) or where the mains
water pressure is very low, and with the potentiometer set to the maximum
temperature, modulation can no longer control the temperature in an opti-
mal way. As a result, the burner may turn on and off repeatedly with fluctuat
-
ing variations in temperature.
It is recommended that you lower the requested temperature by a few de-
grees by turning the dial (
fig. 18 -
B
) anticlockwise.
25
30
35
40
45
50
55
60
65
0
1
2
3
4
5
6
7
8
9
10
11
12
IDRABALCONY 11 graph
flow rate l/min
temperature °C
25
30
35
40
45
50
55
60
65
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
IDRABALCONY 13 graph
flow rate l/min
temperature °C
25
30
35
40
45
50
55
60
65
70
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Te
m
pe
ra
tu
ra
(°
C
)
Portata acqua (l/min)
IDRABALCONY 17 graph
flow rate l/min
temperature °C
