44
installation
Electrical connections
WARNING
Before performing any work on the boiler, fi rst
disconnect it from the electrical power supply
using the external bipolar switch.
230 V power earth connection
The connection must be carried out using
the 2P + E cable supplied with the boiler and
connected to the main PCB.
Room thermostat connection
The room thermostat connection is carried out
inside the box located under the control panel.
Proceed as follows:
- Disconnect the electrical connections to the
boiler.
- Rotate the control panel (see paragraph
“Instructions for opening the casing and
performing internal inspection”).
- Open the box using a screwdriver.
- Connect the room thermostat cables by
removing jumper S.
S
Connection to a solar heating system
The boiler is equipped with a solar sensor for
a series connection to a solar heating system
for the production of domestic hot water (see
instructions sheet).
To ensure that the integrated system
operates correctly, the inlet temperature
to the boiler must be limited by a mixing
device.
Dip-switch (see electrical diagram)
1. Start-up delay
ON = 2 minutes – default setting
OFF = 0 minutes
2. Post-ventilation after domestic hot water
intake
ON = 5 seconds – default setting
OFF = 3 minutes
3. DO NOT MODIFY
4. DO NOT MODIFY
ON
OFF
1
2
3
4
Dip-swich
- Close the fl ap, control panel and front
casing.
For further information, please consult the
Chaff oteaux Manual.