14
ELECTRICAL SYSTEM
6.2.3
Connection to thermoregulators
Condexa Pro3 IN-EXT
heating units are equipped with an ex-
tremely versatile control and operating system, able to operate
three independent systems functioning at different tempera-
tures. The procedure for connecting up the output signal to the
specific points on the terminal board will be illustrated in the
following pages (see Figure 17).
H05-VV-F type cables with minimum external diameter of 5mm
and adequate conductor section may be used for thermoregu-
lation and low voltage systems, being careful to fix the latter to
their cable guides.
6.2.4
Connection to pumps
Condexa Pro3 IN-EXT
regulation system includes the simultane-
ous management of up to three circulators.
9
Therefore, if a low temperature circuit supplied by its own
circulator is present and a general pump is to be installed
on the system, it will be necessary to choose which one of
the two devices should be managed by the system's elec-
tronics.
This operation is done by a Technical Assistance Service author-
ized by
R
during commissioning the system, by setting an
appropriate parameter (specifically n. 34 in the list of param-
eters).
9
The pumps and others external components have to be in-
stalled using an adequate relay/commutator, as shown in
Figure 16.
Use a H05-VV-F type cable with minimum external diameter of
6 mm and adequate conductor section to connect the terminal
board to the relay (to be housed in a special external board),
being careful to fix the latter to its cable guide.
For example, by connecting the low temperature circulator to a
timer and/or external room thermostat the electrical installation
will be the one shown in Figure 18. By this system is possible to
power on circulators (external devices) directly from the network
with no electrical load passing through the fuse of the board.
Moreover, in case of emergency mode, the manual device 0, 1,
AUTO controls the operation of the pump regardless of what the
board. For these reasons it must explicitly provide for the use.
Use a bi-polar cable of the power cable sort (unless otherwise
recommended by the component’s manufacturer.
6.2.5
Connection to room thermostats (on/off)
Connect up the high temperature system room thermostat to
terminals 9. and 10 (Figure 17).
The thermostat for the low temperature system must instead be
connected to terminals n. 11 and 12 (Figure 17).
6.2.6
Connection to weather temperature probe
If you want to use a weather thermoregulator, the external
probe (optional) must be connected up to terminals n.7 and 8 (
Figure 17). The external probe must be placed on an outer wall
facing north to north-east at a height of at least 2.5 metres and
at a distance from windows, doors and air vents.
Protect the probe from direct exposure to the sun. Contact the
Technical Assistance Service authorized by
R
if the curve has
to be adjusted or the weather function excluded.
Figure 16
Summary of Contents for Condexa Pro3 230 IN V02
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