HOW TO TURN THE ELECTRICAL COMPONENTS
If the coil connections must be turned to the right-hand side of the machine, remember (see Fig.3-C) to re-position all
the electrical components on the left-hand side.
Fig. 3
fixing by means of clamps, to
be used to secure the wires if
single wires are used
CONNECTIONS AND WIRING DIAGRAM FOR UNITS WITHOUT REMOTE CONTROL
WARNING: always make sure that the electric power source has been disconnected before proceeding with
any operation .
The appliance must be connected to the power supply by means of an omnipolar switch with contact opening distance
of at least 3mm. Make sure the system is equipped with safety valves against the risk of excessive pressures.
Fit a F 2A 250V fuse on the power line to protect the appliance against short-circuits. Panels equipped with an
electronic thermostat (series TA-F, TAR-F, TE-F, TER-F) are all complete with a minimum water temperature probe.
This allows the ventilating action to stop whenever the temperature of the water entering the Coil drops below 39°C.
The commutator (series CM-F, CMR-F) is pre-engineered for this function when the optional enabling thermostat is
installed (TC-F).
If a single-rank Coil is mounted, the minimum temperature probe is positioned in the housing formed on it.
If the three-way valve is installed (series VB1-F, VB3F), the minimum water temperature probe must be positioned
on the pipe prior to valve VB1-F (if installed) or on valve VB3-F, regardless of whether the single-rank Coil is fitted.
In ducted versions with a multi-speed motor, three speeds of the six available can be enabled by selecting the relative
connections in the terminal board installed on the motor.
Proceed in the following way to make the electrical connections:
1. Disconnect the electricity main and make sure that no one can connect it again while the operations are being
carried out
2. Remove the intake filter as illustrated in fig.9 (version VM-B only)
3. Remove the four screws (1-Fig.9) that fix the casing to the frame and take out the casing (version VM-B VM-F
only).
4. Install the terminal board that connects the ventilating unit.
5. Connect the protection wire coming from the supply line directly to the earth screw, suitable for guaranteeing the
equipotential connections of all the metal earths and structural parts of the machine (Fig. 3-A).
6. Loosen the screws of the electric power source connections.
7. Loosen the wire clamp, insert the power cable and then lock it in place.
8. Electrically connect the control panel (if applicable) to the terminal board.
9. Make sure the cables are correctly inserted and fixed in the seats, positioning them as described in fig. 3-B.
10. Fit the casing back on (version VM-B VM-F only)
11. Fit the intake filter back in place (VM-B only)
12. Hook up the electricity main again.
36
ELECTRICAL CONNECTIONS
power cable coming from the
system