n
Frost protection in combination with an outside sensor
The central heating system can also be protected against frost in
combination with an outside sensor. The radiator valve in a room
where there is a risk of frost must, however, be open. Connect the
outside sensor to the
Tout
terminals of the connector.
The frost protection functions as follows where an outside sensor is
used:
4
At an outside temperature lower than -10°C (can be set with
parameter
p30
): the circulation pump switches on.
4
At an outside temperature higher than -10°C (can be set with
parameter
p30
): the circulation pump continues to run and then
switches off.
4.9.7.
Connecting the calorifier sensor/
thermostat
Ws
DHW sensor
Connect the calorifier sensor or thermostat to the
Tdhw
terminals of
the connector.
T000443-B
Ws
OT
On/off
Tou
t
Tdhw
BL
RL
On/off
OT
BL
RL
Tout
Tdhw
4. Installation
Calenta 25s - 28c - 35s - 40c
44
040412 - 7600585-01
