33
Installation of outdoor sensor
If an outdoor sensor is connected
to the boiler, then the sensor must
be positioned in conformity with the
adjacent drawing.
If an outdoor sensor is NOT connected
parameter T-day is the maximum flow
temperature. Go to Timeprog. options/
timeprog. CH/T-day (see page 49).
Electrical connection
Electrical connections must be
carried out by an authorized electrical
technician, and in conformity with
valid national and local standards and
regulations.
An insulated mains switch must be
used for the power supply, with at least
3 mm contact openings. It must be
mounted inside of the boiler room. The
mains switch is used for switching off
the power supply during maintenance
works.
All cables are passed through the cable
gland at the bottom of the boiler, and
are led to the electronics panel at the
front of the boiler.
Installation
Electrical connection
The electric diagram must be observed
during all electrical connection works
(see the following pages).
A 230V -50Hz mains electrical supply
is required fused externally at 5A.
A deviation on the grid of 230V
(+10% or -15%) and 50Hz
The following additional regulations
also apply:
- The boiler’s wiring is not allowed to
be changed;
- All connections have to be made to
the terminal block.
