emmeti TM3 Mixing Unit Manuel D'installation Et D'utilisation page 8

2. INSTallaTION aND TESTINg
If you are installing the TM3 mixing unit in a Metalbox casing, mount the
electric box or the 6T standard control unit inside
the box by fixing the pre-drilled profile onto the pre-drilled holes inside the
Metalbox on the upper left-hand side (use M6 threaded inserts on which
you can apply the screws supplied on another system).
Perform the electrical cabling of the electric box or the 6T standard control
unit with the circulator by using a 3x1.5mm2 three-pole cable. Follow
the installation wiring diagrams supplied together with the items and in
accordance with IEC standards.
For cement screeds, set the safety thermostat to 45/50°C. If you are
using other kinds of screeds, refer to the maximum values declared by the
manufacturer, in any case below 55°C (UNI 1264-4).
Tripped boiler safety thermostat
To prevent high temperature water from entering the circuits of the
floor-mounted system even in the event the thermostatic head or servo-
motor breaks, you can deactivate the boiler enabling system through the
safety thermostat.
To do so, modify the electrical connection diagram as shown in the figure
below.
P1
2
t >
Safety
1
thermostat
F
N
8
2.5 Testing and filling
– Carry out the inspection test on the unit, close the valves and the
– After inspecting the unit, reduce the pressure inside the collectors by
– Now fill each circuit individually by opening the valve and lockshield
– To fill them up correctly, connect the water supply to the valve in the
Fig. C
Boiler
NC contacts
normally
closed
230V - 50 Hz
Fig. D
lockshields on the distribution collectors.
using the inlet and outlet valves
of the individual way until all the air comes out.
delivery collector at the top and a rubber pipe to let out the air in
the return collector. Inside the mixing unit there is a check valve that
prevents backflow circulation inside the unit, thereby making it easier
to expel the air inside the circuits (fig. C and D).
Valvola di non ritorno
Check valve
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