4.6.2.
Connection of the heating circuit
1. Remove the anti-dust plug located on the heating outlet
connection
{
under the boiler.
2. Connect the heating water outlet pipe to the heating flow
connection.
3. Install a filling and drainage valve on the installation for filling and
draining the boiler.
4. Remove the anti-dust plug located on the heating return
connection
z
under the boiler.
5. Connect the heating water return pipe to the heating return
connection.
4
The boiler is factory fitted with a safety valve mounted
on the left hydroblock.
4
To facilitate maintenance work, we recommend
mounting a shut off valve on the heating flow and
return pipes.
CAUTION
4
The heating pipe must be mounted in accordance
with prevailing provisions.
4
If installing shut off valves, position the filling/
drainage valve and the expansion vessel between
the shut off valves and the boiler.
¼
If using thermostatic valves, see chapter: "Connecting the
T001573-C
T001570-B
T001633-B
4. Installation
Calenta 25s - 28c - 35s - 40c
30
040412 - 7600585-01
