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INSTALLATORUSERMAINTENANCE
Remote Friend control
V2
(CAR
V2
)
On/O digital timer thermostat.
Digital Remote Control
(CRD)
1.4 REMOTE CONTROLS AND ROOM
CHRONOTHERMOSTATS
OPTIONAL.
e boiler is prepared for application of room
chronothermostats and external probe. ese
Immergas components are available as separate
kits to the boiler and are supplied on request.
All Immergas chronothermostats are connected
with 2 wires only. Carefully read the user and
assembly instructions contained in the accessory
kit.
• On/Off digital chronothermostat. The
chronothermostat allows:
- to set two room temperature values: one for
day (comfort temperature) and one for night
(lower temperature);
- to set up to four on/o dierential weekly
programs;
- selecting the required function mode from
the various possible alternatives.
• permanent functioning in comfort temp.
• permanent operation in lower temp.
• permanent function in adjustable anti-freeze
temp.
e chronothermostat is powered by two 1.5V
LR 6 type alkaline batteries;
• ere are two types of Remote Friend Control
V2
(CAR
V2
) (Fig. 1-3) and Digital Remote
Control (CRD) (Fig. 1-4) both with room
chronothermostat functioning. In addition to
the functions described in the previous point,
the Remote Friend Control
V2
enables the
user to control all the important information
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
V2
panel is provided with self-diagnosis
to display any boiler functioning anomalies.
e climate chronothermostat incorporated 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. 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.
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/O mode. e CRD cannot
be used for plants divided into zones.
Electrical connection of the Remote Friend
Control
V2
or chronothermostat On/Off
(Optional). e operations described below must
be performed aer having removed the voltage
from the appliance. The eventual thermostat
or On/Off room chronothermostat must be
connected to terminals 40 and 41 eliminating
jumper X40 (Fig. 3-2). Make sure that the On/
O 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
V2
must
be connected by means of terminals IN+ and
IN- to terminals 42 and 43, eliminating jumper
X40 on the terminal board (in the boiler)
respecting polarity (Fig. 3-2). Connection with
the wrong polarity prevents functioning, but
without damaging the Remote Friend Control
V2
.
e boiler works with the parameters set on
the Remote Friend Control
V2
only if the boiler
main selector is turned to Domestic/Remote
Friend Control
V2
( ). e boiler can only
be connected to one remote control.
Important: If the Remote Friend Control
V2
,
Digital Remote Control or any other On/O
chronothermostat 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.
1.5 EXTERNAL PROBE OPTIONAL.
• External temperature probe (Fig. 1-5). is
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 probe
always operates when connected, regardless of
the presence or type of room chronothermostat
used and can work in combination with the On/
O chronothermostat and the CAR
V2
, (it cannot
be connected to the CRD). e correlation
between system delivery temperature and
outside temperature is determined by the
position of the knob on the boiler control
panel according to the curves shown in the
diagram (Fig. 1-6). e external probe electrical
connection must be made on clamps 38 and 39
on the boiler circuit board (Fig. 3-2).
* (Fig. 1-6) Position of the heating temperature
user adjustment.
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