14
9
45
31
58
8
14
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
MIN
MAX.
TM (°C)
Position of the central heating user
adjustment
EXTERNAL PROBE
Correction law of the flow temperature depending on the external
temperature and user adjustment of the central heating temperature.
Comando Amico Remoto Remote Control V2 or On/Off
chrono-thermostat electrical connections (Optional).
Th
e oper-
ations described below must be performed after having removed
the voltage from the appliance. Any thermostat or On/Off en-
vironment chrono-thermostat must be connected to clamps 40
and 41 eliminating jumper X40 (Fig. 36). Make sure that the On/
Off thermostat contact is of the “clean” type, 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 and 41, eliminating jumper X40 on the P.C.B.
(Fig. 36).
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.
1.10 EXTERNAL TEMPERATURE PROBE
(
OPTIONAL
)
.
Th
e boiler is designed for the application of the external tempera-
ture probe (Fig. 8), which is available as an optional kit. Refer to
the relative instruction sheet for positioning of the external probe.
Th
e probe can be connected directly to the boiler electrical system
and allows the max. system
fl
ow temperature to be automatically
decreased when the external temperature increases, in order to
adjust the heat supplied to the system according to the change in
external temperature.
Th
e 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.
Th
e correlation between system
fl
ow tem-
perature 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. 9).
Th
e electric connection
of the external probe must be made on clamps 38 and 39 on the
terminal board in the boiler control panel (Fig. 36).
ATTENTION:
disconnect power to the appliance be-
fore any electrical connection.
•
On/Off Immergas digital chrono-thermostat.
Th
e chrono-thermostat allows:
- set two room temperature value: one for day (comfort temper-
ature) and one for night (reduced temperature);
- set a weekly programme with four daily switch on and switch
off times;
- selecting the required function 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).
Th
e 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.
Th
e panel is provided with self-diagnosis to display
any boiler functioning anomalies.
Th
e climate chrono-thermo-
stat incorporated into the remote panel enables the system
fl
ow
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.
Th
e 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.
If the system is divided into zones using the relevant
kit, the CAR
V2
must be used with its climate thermostat
function disabled, i.e. it must be set to On/Off mode.
