
Room chronothermostats and external sensor (Optional).
e boiler is arranged for application of room chronother-
mostats and external sensor.
ese Immergas components are available as separate kits to
the boiler and are supplied by request.
All Immergas chronothermostats are connectable with 2
wires only. Carefully read the use and assembly instructions
contained in the accessory kit.
• On/Off digital chronothermostat. e chronothermostat
enables:
- setting of two room temperature values: one for day
(comfort temperature) and one for night (lower
temperature);
- setting up to three on/off differential weekly programs;
- selecting the required function mode from the various
possible alternatives:
• permanent operation in comfort temp;
• permanent operation in lower temp;
• permanent function in adjustable antifreeze temp.
e chronothermostat is powered by two 1.5V LR6 type
alkaline batteries.
• 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 have under control and at
hand all the important information regarding appliance
and heating system operation with the possibility of easily
changing the previously set parameters without having to
go to the place where the appliance is installed. e Remote
Friend Control panel is provided with self-diagnosis to
display any boiler operation anomalies. The climate
chronothermostat incorporated in the remote panel
enables the system delivery temperature to be adjusted
to the actual room heating needs, in order to obtain the
desired room temperature with extreme precision and
therefore with clear savings in running costs. It also enables
the room temperature and actual external temperature
(if the external sensor is present) to be displayed. e
chronothermostat is fed directly by the boiler by means of
the same 2 wires used for the transmission of data between
boiler and chronothermostat.
Power
supply
Auxiliary output
Remote control
(OPTIONAL)
On-Off Room Stat
(OPTIONAL)
External sensor
(OPTIONAL)
4
INST
ALLER
USER
TECHNICIAN
5
INST
ALLER
USER
TECHNICIAN