Immergas 3.020928, Instruction And Recommendation Booklet

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1.7 REMOTE CONTROLS AND
ROOM CHRONO-THERMOSTATS
(OPTIONAL).
The boiler is prepared for the application of room
chrono-thermostats or remote controls, which
are available as optional kits.
All Immergas chrono-thermostats are connected
with 2 wires only. Carefully read the user and
assembly instructions contained in the acces-
sory kit.
• On/Off digital Immergas chrono-thermostat
(Fig. 1-4). The chrono-thermostat allows:
- set two room temperature value: one for
daytime (comfort temperature) and one for
night-time (reduced temperature);
- set a weekly program with four daily switch
on and switch off times;
- select the required operating mode from the
various possible alternatives:
- manual mode (with adjustable tempera-
ture).
- automatic mode (with set program).
- forced automatic mode (momentarily
changing the temperature of the automatic
program).
The chrono-thermostat is powered by two 1.5V
LR 6 type alkaline batteries.
• Comando Amico Remoto remote control
V2
(CAR
V2
) (Fig. 1-6) with 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 informa-
tion regarding operation of the appliance and
the heating system with the opportunity to eas-
ily 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-thermostat
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.
Important:
if the system is subdivided 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.
Comando Amico Remoto Remote Control
V2
or On/Off chrono-thermostat electrical con-
nections (Optional)
. The operations described
below must be performed after having removed
the voltage from the appliance.
Any thermostat
or On/Off environment chrono-thermostat must
be connected to clamps 40 and 41 eliminating
jumper X40 (Fig. 3-2). 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
clamps 41 and 44 eliminating jumper X40 on the
P.C:B., paying attention not to invert the polarity
in the connections (Fig. 3-2).
Important: 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 regulations regarding
electrical systems. No boiler pipes must ever be
used to earth the electric system or telephone
lines. Ensure elimination of this risk before mak-
ing the boiler electrical connections.
1.8 EXTERNAL PROBE (OPTIONAL).
The boiler is designed for the application of the
Room Thermostat (Fig. 1-5) which is available
as an optional kit. Refer to the relative instruc-
tion 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 automatically 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 acts when connected
independently from the presence or type of room
thermostat used. The correlation between system
flow temperature and outdoor temperature is de-
termined by the position of the selector switch on
the boiler control panel according to the curves
shown in the diagram (Fig. 1-6). The electric con-
nection of the external probe must be made on
clamps 38 and 39 on the boiler P.C.B. (Fig. 3-2).
MAX
MIN
Position of the central heating tem-
perature user adjustment
Comando Amico Remoto remote control
V2
(CAR
V2
) On/
Off digital chrono-thermostat.