37
User instructions
for the user
6
“Summer/Winter” knob
0 -
(STAND-BY)
• When the knob is in this position, the boiler does not execute the main functions, but
the anti-freezing and anti-lockout functions only (for details see “Boiler Inactivity”).
• Use also this position to unlock the boiler after a problem or a malfunctioning. See
“Alarms” section for details.
In case of a long period of absence of the user and/or boiler inactivity, see the “Boiler
Inactivity” section for the necessary precautions concerning electric supply, gas supply
and anti-freezing function.
SUMMER – In this position the boiler heats the water for the taps only. When opening an
hot water tap, the burner ignites and, after a brief time
(1)
, the hot water flows from the tap.
(1)
the time depends also from the features of the external system
WINTER – In this position the boiler heats the water for the taps, as in Summer
mode. Moreover, it provides heating for the rooms.
The scale from I to IIIII, starting from the symbol
determines the heating system
temperature
.
• If you make a continuous use of the heating system, regulate the knob to obtain the
desired room temperature;
• If you make a discontinuous use of the heating system, the temperature will be set
through a room thermostat (or preferably through a chrono-thermostat). In this case,
we suggest to regulate the knob in order to reach soon the set temperature value,
avoiding the overheating of the rooms.
In both cases the optimal regulation must be found considering the climatic zone, the year
period and the heat insulation of the flat.
We remind you that rooms temperature must be regulated through a room thermostat
with two temperature levels. This is required with the DPR 26 August 1993 n° 412
and further modifications.
7
“Hot Water” knob
- The scale from I to IIIII, indicated with this symbol, determines the temperature of the
hot water produced by the boiler.
· Consider that, due to heat losses all over the tubes, it is necessary a certain time
before the temperature becomes stable at the tap exit, therefore the best evaluation
is during a shower or a bath.
· With this type of boiler, it is suggested to regulate the knob to obtain a comfortable
temperature with a drawing of hot water only or a mix with a small quantity of cold
water. Avoid maximum values if not strictly necessary, because they would oblige to
mix the water with a big quantity of cold water.
ATTENTION:
the positions
and
are for the use of technicians only. Do not move the
knob to these positions, because there could be a malfunctioning. If this will occur accidentally,
move immediately the knob on the scale
from I to IIIII.
