Operation - S&P EC-3N User Instructions

installations and the pertinent regulations
for each country.
The installation should be provided with
an isolator or disconnection device that
disconnects all electricity supply to the
apparatus.
First, remove the upper cover (fig.4). The
electrical wiring diagram is stored below
this cover. Proceed with the connection to
the mains supply, having checked that the
mains supply voltage coincides with the
voltage shown on the product data plate.
Use wiring conductors of the same
diameter and number shown on the
diagrams that correspond to each model.
The connection to the mains electrical
supply should be made using protected
cable and should enter the apparatus
through the cable grip provided.
CONNECTION TO THE COMMUTATION
SWITCH (CR-25)
These apparatus should be linked to the
mains through a commutation switch (CR-
25), supplied separately.
To make the connection, use one of the
previously marked holes, situated at the
rear of the apparatus and fit the cable grip
to the corresponding protected cable. (fig.5)
For electrical connections see the CR-25
commutation switch diagram.
CONNECTION
THERMOSTAT (TR-1 OR TR-2)
The ambient temperature can be regulated
automatically by connecting a thermostat
to the apparatus.
For connection, follow the installation
procedure outlined for the commutation
switch CR-25.
For the electrical connections, see the
thermostat diagrams (TR-1or TR-2)
The TR-1 thermostat can be used with
TO AN AMBIENT
models EC-3N, EC-5N and EC-9N.
The TR-2 thermostat can be used with
models EC12N and EC-15N. This
thermostat allows an improvement in
temperature differential and energy
savings.

OPERATION

The CR-25 commutator operates as
described below.
The positions on the commutator are as
follows:
0 Stop
Ventilation
Half power heating
Full power heating
When the commutation switch at the rear
of the apparatus (fig.6) is in the position
.......the optional thermostat (TR-1 or TR-
2) acts only on the heater elements,
disconnecting them when the selected
temperature is reached. The fan functions
permanently.
When the commutator is in position
thermostat acts on the heater elements and
the fan, both being disconnected when the
selected temperature is reached.
The thermostat fixes and maintains the
desired temperature.
To operate, turn the thermostat control to
the maximum position
Select the power.
Once the surrounding area has reached the
desired temperature, slowly turn back the
thermostat control anti-clockwise until a
slight "click" is heard. The Aeroheater will
now connect and disconnect automatically,
maintaining the pre-selected temperature
constant, according to the mode selected
To disconnect: Situate the commutation
switch in the "0" position.
NOTE: the surfaces of the apparatus are
hot during operation.
the