Switching Off For An Extended Period Of Time; Operation; Withdrawal Range Graph - Riello MINI 11 Manual De Instalación

- Check that the green light switches off (
4.4 Switching off for lengthy periods
If the boiler is not going to be used for a long period of time:
- Turn the main dial ( ) on the control panel to position “
A
- Set the system's main switch to "off"
- Check that the green light switches off (
- Shut-off the gas valve and water taps.
Empty the system if there is a risk of freezing.
The Technical Assistance Centre is at your disposal if you have any problems
carrying out this procedure.

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The temperature of the water withdrawn varies from 35°C to 60°C accord-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  xed- ame appliances, this appliance is  tted with a modulating valve
which optimises performance. It allows the appliance to operate with lower
water pressure and  ow, modulating the  ame in relation to the quantity
of water withdrawn, so as to keep the temperature constant (see graph).
The appliance is  tted with a  ame-ionisation automatic ignition. Each time
water is withdrawn, the burner  ame is automatically turned on and remains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 (B), the temperature of the hot water
requested can be selected from between the minimum and the maximum.
By turning the dial (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  ow rate with the dial (B) set to the minimum or maximum
positions.
The temperatures shown refer to stable conditions with the cold water
supply temperature at 15 ±1°C, with a tolerance of ± 0.5 l/min of the water
 ow rate provided and of ±2°C of the hot water temperature obtained. The
temperatures shown in the graph are read at the boiler hot water outlet pipe.
).
C
”
)
C
The  ow limiter allows the set temperature of the hot water provided to be
adjusted at any time, within the speci ed 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
 ow 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  uctu-
ating variations in temperature.
It is recommended that you lower the requested temperature by a few de-
grees by turning the dial (B) anticlockwise.
Diagram RIELLO MINI 11
65
60
55
50
45
40
35
30
25
0 1 2 3 4
Diagram RIELLO MINI 13
65
60
55
50
45
40
35
30
25
0 1 2 3 4
Diagram RIELLO MINI 17
70
65
60
55
50
45
40
35
30
25
0 1 2 3 4 5 6
5 6 7 8 9
 ow rate l/min
5 6 7 8 9 10 11
 ow rate l/min
7 8 9 1 0 1 1 1 2 1 3 1 4
( / )
 ow rate l/min
ENGLISH
10 11 12
12 13 14
1 5 16 17 1 8
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