Beretta Power Plus Box 1002 P INT, Руководство по установке, Страница: 14 / 44

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6 .2 .3 Connection to thermoregulators
Power Plus Box P INT-EXT
heating units are equipped with
an extremely versatile control and operating system, able
to operate three independent systems functioning at dif-
ferent temperatures. 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
thermoregulation and low voltage systems, being careful to
fix the latter to their cable guides.
6 .2 .4 Connection to pumps
Power Plus Box P INT-EXT
regulation system includes the
simultaneous management of up to three circulators.
b
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 electronics.
This operation is done by a Technical Assistance Centre
authorized by
B
during commissioning the system, by
setting an appropriate parameter (specifically n. 34 in the
list of parameters).
b
The pumps and others external components have to
be installed using an adequate relay/commutator, as
shown in Figure 16.
Use a H05-VV-F type cable with minimum external diame-
ter of 6 mm and adequate conductor section to connect the
terminal board to the relay (to be housed in a special exter-
nal board), being careful to fix the latter to its cable guide.
For example, by connecting the low temperature circula-
tor to a timer and/or external room thermostat the electrical
installation will be the one shown in Figure 18. By this sys-
tem 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 pro-
vide for the use.
Use a bi-polar cable of the power cable sort (unless other-
wise 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 in-
stead 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 Centre authorized by
B
if the
curve has to be adjusted or the weather function excluded.
Figure 16