sylber DEVYL ARTIC 11, Инструкция по установке и эксплуатации

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DEVYL ARTIC
26
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
“OFF” position.
fig. 18
C
D A
B
- 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 possible 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 The temperature of the water withdrawn varies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 according to the position of the temperature
selection potentiometer. Unlike traditional 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of water withdrawn, so as to keep the temperature constant (see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 Each time water is withdrawn, the burner flame is auto-
matically 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 mini-
mum and the maximum.
By turning the dial (fig. 18 - B ) to an intermediary point, the tem-
perature of the water provided is between the minimum and maxi-
mum values that can be selected.
The outer curves in the graphs refer to the temperatures obtained
in relation 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 supply 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 temperatures shown in the graph are
read at the boiler hot water outlet pipe.
The flow limiter allows the set temperature of the hot water pro-
vided to be adjusted at any time, within the specified limits.
As a result, the permitted operating range (with the limiter in posi-
tion) is that shown by the curves and the dotted vertical line cor-
responding 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 optimal way. As a result, the burner may turn on
and off repeatedly with fluctuating variations in temperature.
It is recommended that you lower the requested temperature by a
few degrees 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
DEVYL ARTIC 11 graph
flow rate l/min
temperatur
e °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
DEVYL ARTIC 13 graph
flow rate l/min
temperatur
e °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)
DEVYL ARTIC 17 graph
flow rate l/min
temperatur
e °C