n
Operation signal and failure signal (Status)
The alarm or operation signal is selected using parameter
p40
.
4
If the boiler is operating, the operation signal can be switched via
a potential-free contact (maximum 230 VAC, 1 A) on the
No
and
C
terminals of the connector.
4
If the boiler locks out, the alarm can be transmitted via a potential-
free contact (maximum 230 VAC, 1 A) on the
Nc
and
C
terminals
of the connector.
n
Solar DHW sensor Tsol
The solar boiler temperature is controlled using a sensor. Connect
this sensor to the connector terminals
Tsol
.
n
Pressure switch minimum Gps
The minimum gas pressure switch shuts the boiler down if the inlet
gas pressure becomes too low. Connect the minimum gas pressure
switch to the
Gps
terminals of the connector. The presence of the gas
pressure switch must be set using parameter
p41
.
n
Heat Recovery Unit (Hru)
Connect the wires from the heat recovery unit to the
Hru
terminals of
the connector. The presence of the heat recovery unit must be set
using parameter
p4"
.
Calenta 25s - 28c - 35s - 40c
4. Installation
040412 - 7600585-01
49
