Immergas VICTRIX 24 kW Manual De Instrucciones Y Advertencias página 185

Room chronothermostats and external sensor (Optional). The boiler is
arranged for application of room chronothermostats and external sensor.
These Immergas components are available as separate kits to the boiler and
are supplied on request.
All Immergas chronothermostats can be connected with 2 wires only.
Carefully read the use and assembly instructions contained in the acces-
sory kit.
• On/Off digital chronothermostat. The chronothermostat enables:
- setting of two room temperature values: one for day (comfort tem-
perature) and one for night (lower temperature);
- setting up to four on/off differential weekly programs;
- selecting the required function mode from the various possible alterna-
tives:
• permanent operation in comfort temp;
• permanent operation in lower temp;
• permanent function in adjustable antifreeze temp.
The chronothermostat is powered by two 1.5V LR 6 type alkaline bat-
teries.
• Remote Friend Control Device with climatic chronothermostat function.
In addition to the functions described in the previous point, the Remote
Friend Control enables the user to control all the important informa-
tion regarding operation of the appliance and the heating system with
the opportunity of easily intervening on the previously set parameters
without having to go to the place where the appliance is installed. The
Remote Friend Control panel is provided with self-diagnosis to display
any boiler operation anomalies. The climate chronothermostat incorpo-
rated in the remote panel enables the system delivery 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. It also enables the room temperature
and actual external temperature (if the external sensor is present) to be
displayed. The chronothermostat is fed directly by the boiler by means
of the same 2 wires used for the transmission of data between boiler and
chronothermostat.
Important: If the system is subdivided into zones, the RFC must be used
with its climate thermostat function disabled, i.e. it must be set to On/
Off mode.
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• External temperature sensor. This sensor can be connected directly to the
boiler electrical system and allows the max. system delivery temperature
to be automatically decreased when the outside temperature increases, in
order to adjust the heat supplied to the system according to the change
in external temperature. The external sensor always operates when con-
nected, regardless of the presence or type of room chronothermostat used,
and can work in combination with both Immergas chronothermostats.
The correlation between system delivery temperature and outside tem-
perature is determined by the position of the knob on the boiler control
panel according to the curves shown in the diagram. The external sensor
electrical connection must be made to the 38 and 39 terminals on the
terminal board located under the sealed chamber (see fig. page 183).
Electrical connection of the Remote Friend Control or chronothermostat
On/Off (Optional). The eventual thermostat or On/Off room chronother-
mostat must be connected to terminals 40 and 41 eliminating jumper X40
(see fig. page 183). Make sure that the On/Off thermostat contact is of the
"clean" type, i.e. independent of the mains supply, otherwise the electronic
adjustment card would be damaged. The eventual Remote Friend Control
must be connected by means of terminals IN+ and IN- to terminals 42
and 43, eliminating jumper X40 on the terminal board (located under the
sealed chamber) respecting the polarity, (see fig. page 183); connection
with the wrong polarity inhibits its operation, but without damaging the
Remote Friend Control. After connecting to the Remote Friend Control,
jumper X40 must be eliminated. The boiler works with the parameters set
on the Remote Friend Control only if the boiler main selector is turned to
Domestic/Remote Friend Control (
Important: If the Remote Friend Control is used arrange two separate lines
in compliance with current regulations regarding electrical systems. Boiler
pipes must never be used to earth the electric or telephone lines. Ensure
elimination of this risk before making the boiler electrical connections.
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