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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 appliance pipes must ever be used to earth the electric system or telephone lines.
Ensure elimination of this risk before making the boiler electrical connections.
Any room thermostat or ON-OFF must be connected to terminals 40 and 41 eliminating jumper X40.
Any CAR
V2
must be connected to terminals 44 and 41 complying with the polarity
without eliminating jumper X40
.
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.
Dialogue to remote devices (Optional)
On this path it is possible to select different remote control modes (connected to terminals 44-41):
Assistance/Inputs/Remote control
-
Remote control = IMG BUS
: it is the default condition for correct dialogue with the CAR
V2
devices. In this condition, the selection of
the operating mode, DHW (Domestic hot water) set, central heating / C.H. set and the central heating / C.H. request (for zone 1 in case
of system divided into several zones) are fully managed by CAR
V2
. The anti-legionella function can be activated on the boiler in the
usual way.
-
Remote control = 1
: it is possible to manage the DHW Mode entirely and solely via the boiler (set, boost, anti-legionella management).
This type of dialogue is recommended for commercial remote devices, other than CAR
V2
. The remote control will remain in control of
the “Operating mode”, “Set Central heating / C.H.” and “Central heating / C.H. demand”.
1.10 EXTERNAL TEMPERATURE PROBE (OPTIONAL)
The boiler is designed for the application of the external temperature probe (Fig. 7) 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 automatically de-
creased 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 and wireless room probes.
If wireless room probes are used, it is possible to activate or deactivate the action of the external probe for each individual zone in use, by
acting on the parameter in the zone menu.
The electric connection of the external probe must be made on terminals 38 and 39 on the terminal board in the boiler control panel
(Fig. 52).
45
31
58
7
1.11 FLOW TEMPERATURE PROBE (OPTIONAL)
The sensor must be positioned on the central heating system flow pipe common to all requesting zones, downstream of any by-pass on the
system return, in order to measure the actual temperature “detected” by each requesting zone.