92
Input function terminal 3-4
The freely programmable input (terminals 3-4) allows three different functions
to be activated. The parameter has the following significance:
1
= If an external sensor is connected, the display will show the temperature
of the external sensor ( _ _ = no sensor connected, function disabled).
2
= With an external contact, it is possible to switch-over to "reduced pre-
set value of the ambient temperature".
3
= With an external contact, it is possible to switch-over to "reduced pre-
set value of the antifreeze ambient temperature" (short circuit 0 0 0 or
interruption _ _ _ ). The display shows the current status of the external
contact.
64
Modo de acção do contacto externo
Influxo das sondas
am externa
Anti-bacterial function
(if tank unit “BT100” is installed)
Se a entrada (bornes 3 e 4 do ropadé) está ligada a um contacto externo de
potencial zero (parâmetro 64 = 2 ou 3), pode ser determinado o modo de
acção do contacto (tele-interruptor do telefone ou contacto janela). O modo de
acção especifica o estado de contacto no qual a função desejada está activa.
Display:modo de acção fechado (curto-circuito)
0 0 0
modo de acção aberto (interrupção)
_ _ _
Determina o coeficiente de mistura entre a sonda ambiente interna e exter-
na, quando o parâmetro 64 = 1.
0 %
= activa só a sonda interna (0% externa - 100% interna)
50 %
= valor médio da sonda e interna
100 %
= activa só a sonda externa
Para a regulação ambiente e a visualização, é utilizada a mistura programa-
da. Se a sonda externa apresenta um curto-circuito ou uma interrupção
prossegue-se com a sonda interna.
This function allows the hot water to be brought to a high temperature once
a week in order to eliminate eventual pathogenic agents.
It is active every Monday for a maximum duration of 2.5 hours at a delivery
temperature of 65°C.
0 = not active 1 = active
65
66
69
2.10.3 Gradient of the
characteristic
heating curve
The gradient of the characteristic heating
curve is imposed on the current value
“15”
of Logica.
Increasing the gradient as shown in the
drawing of fig. 18, the delivery temperature
increases in correspondence to the outside
temperature.
2.11
EXTERNAL
TEMPERATURE
SENSOR
The "Logica Remote Control" can be con-
nected to an external temperature sensor
available a an optional extra (code
8094100). This configuration ensures and
maintains the required temperature con-
stant in the room. The ambient temperatu-
re is, in fact, indicted and evaluated as the
calculated mean of the value measured insi-
de and outside the dwelling. For installation,
follow the assembly instructions inserted in
the package.
Fig. 18
Example:
Choosing a gradient of 15 with an outside temperature of
–10°C we shall have a delivery temperature of 60°C.
