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Fastening and connecting
The unit has been designed to be built in (in-
side fan-coils, special panels or other suitable
housings).
The unit shall be installed by qualifi ed person-
nel in accordance with the EN regulations in
force.
The distance between the actuator and the
transmitter shall not exceed 100 m.
Connect the wires to the socket terminal block
in accordance with the diagrams illustrated be-
low.
If a two-tube system is available, connect only
valve "1" (contact between terminals "C" and
"V1"). In case of a four-tube system, valve "1"
is dedicated to heating, whereas valve "2" (be-
tween "C" and "V2") is dedicated to cooling.
WARNING! Prior to carrying out any operation
on the unit, make sure that you have discon-
nected the mains connecting cables.
Operation check
Refer to the specifi c user manual for the in-
struction on how to use the CH130AR thermo-
stat.
• Make sure that the actuator is correctly con-
nected with the thermostat.
• Power the actuator by connecting the same
with the electric mains.
• Switch over, on the thermostat, the fan mo-
tor speed (3 relays) and the valve control (2
relays), then verify that they have actually
switched over.
16
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