CIAT BOX TRI Eco+ Handbuch Seite 25

Diagram 7228573 page 17
Three 3-phase HELIOTHERME 4000 units driven by one 3-PH Eco+ BOX slave unit with
one 3-PH Eco+ BOX BMR
Master controller power supply:
The 3-PH Eco+ BOX slave unit delivers 12 V to the
master controller via terminals 18 and 19. The master
controller must be connected to the S and 12 V terminals.
Communication between the master controller and
the 3-PH Eco+ BOX slave unit: the 3-PH Eco+ BOX slave unit:
The setpoint signals are sent by terminals A and B on
the master controller. The slave unit receives these
setpoint signals on terminals 20 and 21 on the internal
controller.
Room sensor:
The sensor head is prewired to the control box (T°C)
and attached to the cable gland on the hinged side.
Optional 15 m remote sensor (code 7207381). This
remote sensor may be connected to terminals 22 and
23 on the slave unit.
Three-phase fan motor assemblies:
Before attempting to wire the connections, ALWAYS remove the jumper strips in the fan motor assemblies terminal Before attempting to wire the connections ALWAYS remove the jumper strips in the fan motor assemblies' terminal
boxes. This will ensure that the control will operate correctly and that the fan motor assemblies will run in the correct
order.
Connect the fan motor assembly between motor contactors KVL1 and KVP1 on the 3-PH Eco+ BOX slave unit and
terminals U, V, W, X, Y, Z, and PE1 on the BMR unit.
Note: if this configuration is used, make sure that each HELIOTHERME motor is protected by a two-speed padlockable
proximity switch (0596147) that is located less than 2 metres away so as to comply with French safety standards IT 246
art. 4-7-3 and NF C 15-100.
Valve actuator:
(option included in the 0-10 V valve kit)
Supplies water to the heat exchanger in proportion to
the building's heat requirements.
The valve actuator's 24 V power supply is delivered by
terminals 9 and 10 on the 3-PH Eco+ BOX slave unit.
The 0-10 V control signal is delivered by terminal 11 on
the 3-PH Eco+ BOX slave unit.
8
(control: air and/or water)
Slave unit network power supply:
Connect the 3-ph/400 V supply with N and PE to the
disconnect switch Q1 between 1-3-5-7-PE.
Communication between the slave units:
Setpoint signals are sent between the slave units via Setpoint signals are sent between the slave units via
terminals 20 and 21 on the internal controllers.
Motor overload protection:
Series connect the fan motor assemblies' overload
protections between terminals 3 and 4 on the 3-PH Eco+
BOX slave unit and the BMR unit.
Note: in this type of configuration, the entire system will be
shut off if a fault occurs on any of the motors. The only way
to isolate the system from a faulty fan motor assembly is to
use one 3-PH Eco+ BOX slave unit per HELIOTHERME
unit.
Changeover thermostat
(option 7128892)
Thermostat to be mounted on the water supply pipes of
each HELIOTHERME heat exchanger. Required for
automatic changeover between WINTER (open contact)
and SUMMER (closed contact) modes.
Connect the changeover thermostat's white wire to
terminal 5 on the 3-PH Eco+ BOX slave unit and the black
wire to terminal 6 on the 3-PH Eco+ BOX slave unit.