External Temperature Probe - Immergas HERCULES Solar 26 1 A Instruction Booklet And Warning

1.4 REMOTE CONTROLS AND
ROOM TIMER 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 timer thermostat (Fig. 1-3). The
timer thermostat allows:
- to set two room temperature values: one for
day (comfort temperature) and one for night
(lower temperature);
- to set up to four on/off differential weekly
programs;
- to select the required operating mode from
the various possible alternatives:
• permanent functioning in comfort temp;
• permanent functioning in reduced temp;
• permanent functioning in adjustable anti-
freeze temp.
The timer thermostat is powered by two 1.5V
LR 6 type alkaline batteries.
• There are two types of remote controls avail-
able: Comando Amico Remoto remote control
(CAR) (Fig. 1-4) and Super Comando Amico
Remoto remote control (Super CAR) (Fig. 1-5)
both with room timer thermostat functioning.
In addition to the functions described in the
previous point, the chrono-thermostat panels
POWER SUPPLY CABLE
SOLAR PROBE CABLE
REMOTE CONTROL CABLE
enable the user to control all the important
information regarding operation of the ap-
pliance and the central 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 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 timer thermostat is fed
directly by the boiler by means of the same 2
wires used for the transmission of data between
boiler and timer thermostat.
Important: If the system is subdivided into zones
using the relevant kit the CAR and the Super
CAR must be used with its climate thermostat
function disabled, i.e. it must be set to On/Off
mode.
CAR, Super CAR or On/Off chrono-thermostat
electrical connection (Optional). The operations
described below must be performed after having
removed the voltage from the appliance. The even-
tual On/Off environment timer 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 supply, otherwise the
Correction law of the flow temperature depending on the external tem-
perature and user adjustments of the central heating temperature.
Fig. 1-7
electronic adjustment card would be damaged.
Fig. 1-6
Any CAR or Super CAR must be connected by
means of terminals IN+ and IN- to terminals 42
and 43 on the circuit board, eliminating jumper
X40 and respecting polarity (Fig. 3-2). Connec-
tion with the wrong polarity prevents function-
ing, but without damaging the CAR The boiler
can only be connected to one remote control.
Important: If the Comando Amico Remoto
remote control 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.
Installation with system operating at direct
low temperature. The boiler can directly feed a
low temperature system by acting on parameter
"P66" (Par. 3.8) and setting the flow temperature
adjustment range "P66/A" and "P66/B". In this
situation it is good practice to insert a safety
device in series with the power supply and boiler.
This device is made up from a thermostat with a
temperature limit of 60°C. The thermostat must
be positioned on the system flow pipe at a dis-
tance of at least 2 metres from the boiler.

1.5 EXTERNAL TEMPERATURE PROBE

(OPTIONAL).
The boiler is prepared for the application of the
external probe (Fig. 1-7), which is available as an
optional kit. The probe can be connected directly
to the boiler electrical system and allows the
max. system flow temperature to be automati-
cally 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 oper-
ates when connected, regardless of the presence
or type of room timer thermostat used and can
work in combination with Immergas timer
thermostats. The correlation between system
flow temperature and external temperature is
determined by the parameters set in menu "M5"
under "P66" according to the curves represented
in the diagram (Fig. 1-8). The electric connection
of the external probe must be made on clamps 38
and 39 on the boiler P.C.B. (Fig. 3-2).
EXTERNAL PROBE
TM-MAX/MIN = Selected flow
temp. range.
TE = External temperature.
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125
Fig. 1-8