FRANCO s. r. l. Instruction Manual AP
12
2.3 Electrical connections
For automatic control, the unit heater can be connected to an
(external) room thermostat or, alternatively, to an ON/OFF switch for
manual control.
•
The electrical connection must be carried out by a qualified technician.
•
Ensure that the characteristics of the electrical supply current comply with what is
indicated on the nameplate.
•
Earthing is mandatory
.
The installation must include a device for omnipolar disconnection of the device from the mains power
supply, and a protection fuse of adequate size of the delayed type for motor starting must also be
installed.
2.4 Hydraulic connections
Connect the unit heater to the water supply and return lines at the
points provided (see Fig. 1.10.1 - Water supply and return
connection).
Avoid twisting the connections when connecting to the line. Counter
the tightening with a spanner. The thermal system must be adapted to the characteristics of the
appliances in use and comply with the regulations in force.
3 - OPERATION
3.1 Preliminary Operations
Before putting the unit heater into operation, check that
•
All connections, both electrical and hydraulic, are made according to the instructions in this manual;
•
The hot water heater is free and clear;
•
The flow and return water taps are open.
3.2 First Start-up
- Start the fan and check the correct airflow direction (Fig. 3.2.1);
- Ensure that all wires are positioned evenly and are not pinched or
stretched;
- Ensure that the hydraulic connections are correct;
- Open the water supply tap and check that there are no leaks along the flow and return lines;
- Check that the appliance performs the intended function (heating or cooling) correctly.
Fig. 3.2.1
3.3 Start-up
Start the machine by setting the room thermostat (external) to the desired temperature or turning the
manual switch (external) to the ON (I) position. The machine starts automatically as soon as it is powered
Air
flow
direction
WARNING!
The heat exchanger can
reach very high
temperatures!
