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EXTERNAL PROBE
Correction law of the flow temperature depending on the external
temperature and user adjustment of the central heating temperature.
ATTENTION:
disconnect power to the appliance be-
fore any electrical connection.
•
On/Off Immergas digital chrono-thermostat.
The chrono-thermostat allows:
- set two room temperature values: one for day (comfort tem-
perature) and one for night (reduced temperature);
- set a weekly programme with four daily switch on and switch
off times;
- select the required operating mode from the various possible
alternatives:
• manual mode (with adjustable temperature).
• automatic mode (with set programme).
• forced automatic mode (momentarily changing the temperature
of the automatic programme).
The chrono-thermostat is powered by two 1.5V LR 6 type alkaline
batteries;
•
Comando Amico Remoto Remote Control Device
V2
(CAR
V2
)
with climate chrono-thermostat function.
In addition to the functions described in the previous point,
the CAR
V2
panel enables the user to control all the important
information regarding operation of the appliance and the heating
system with the opportunity to easily intervene on the previously
set parameters, without having to go to where the appliance is
installed. The panel is provided with self-diagnosis to display
any boiler functioning anomalies. The climate chrono-thermo-
stat incorporated into the remote panel enables the system flow
temperature to be adjusted to the actual needs of the room being
heated, in order to obtain the desired room temperature with
extreme precision and therefore with evident saving in running
costs. The CAR
V2
is fed directly by the boiler by means of the
same 2 wires used for the transmission of data between the boiler
and device.
Comando Amico Remoto Remote Control
V2
or On/Off
chrono-thermostat electrical connections (Optional)
.
The op-
erations described below must be performed after having removed
the voltage from the appliance.
Any thermostat or On/Off environ-
ment chrono-thermostat must be connected to clamps 44/40 and
41 eliminating jumper X40 (Fig. 37). Make sure that the On/Off
thermostat contact is “dry”, i.e. independent of the mains voltage,
otherwise the P.C.B. would be damaged. Any Comando Amico
Remoto remote control
V2
must be connected to terminals 44/40
and 41, eliminating jumper X40 on the P.C.B. (Fig. 37). The boiler
can only be connected to one remote control.
If the Comando Amico Remoto remote control
V2
or
any other On/Off chrono-thermostat is used arrange
two separate lines in compliance with current regu-
lations regarding electrical systems. No boiler pipes
must ever be used to earth the electric system or telephone
lines. Ensure elimination of this risk before making the boiler
electrical connections.
1.11 EXTERNAL TEMPERATURE PROBE (OPTIONAL).
The boiler is designed for the application of the external temper-
ature probe (Fig. 9), which is available as an optional kit. Refer to
the relative instruction sheet for positioning of the external probe.
The probe can be connected directly to the boiler electrical
system and allows the max. system flow temperature to be au-
tomatically decreased when the external temperature increases,
in order to adjust the heat supplied to the system according to
the change in external temperature. The external probe always
operates when connected, regardless of the presence or type of
room chrono-thermostat used and can work in combination with
Immergas chrono-thermostats. The correlation between system
flow temperature and external temperature is determined by the
position of the central heating selector switch on the boiler control
panel (or on the CAR
V2
control panel if connected to the boiler)
according to the curves shown in the diagram (Fig. 10). The elec-
tric connection of the external probe must be made on clamps 38
and 39 on the terminal board in the boiler control panel (Fig. 37).
Position of the central heating
temperature user adjustment
