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Daisy chain
WARNING: it is forbidden to supply other units from the terminal block.
8.4 Connecting a field-supplied controller
When installing a field-supplied controller, keep the following aspects in mind:
Make sure the device and the electricity supply are switched off prior to installation / service.
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Do not install the controller in locations that can be affected by radiant heat or in places with high levels of sunlight.
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Do not install the controller behind doors or in corners.
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Install the controller approximately 1.5 m above the floor. In the event that the controller is intended for use by wheelchair
users, please refer to local regulations
Protect the device from water/debris to avoid damaging the controller.
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Mount the controller according to the following instructions:
1.
If the controller is not to be embedded into the wall, proceed to the next step. Otherwise, first make sure that the
concealed wiring for the controller and the hole in the wall for installing a hollow installation box have been prepared. Then
lead the controller wiring into the hollow installation box and place the installation box in the hole in the wall.
2.
If the controller terminal board is accessible from outside, proceed to the next step. Otherwise, open the controller housing
and separate its front part including the display from its back part including the controller terminal board.
3.
Connect the wires of the Fan Coil wiring with the controller terminal board (→ Electrical connections, section 7.1 ).
4.
Fix the one-part controller or the back part of the controller housing with screws to the installation box or, if no installation
box is to be used, to the wall.
5.
For two-part controllers, re-connect the controller front part to the back part and close the controller housing carefully.
IMPORTANT
If the local control includes a remote ambient temperature sensor and/or a set temperature adjustment module, these shall
be connected with shielded cable and shall not pass through the same conduits as the power supply cables, because the
voltages induced may create reliability faults in the unit's operation.
If a field-supplied thermostat or temperature sensor is to be used, mount it according to the following instructions:
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Choose the desired mounting position for the
sensor bulb on the Fan Coil unit's water inlet pipe
as shown in the scheme here on the right.
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At the chosen position, coat the pipe with heat
conducting paste to guarantee good thermal
transfer.
Mount the sensor bulb at the chosen position on
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the water inlet pipe.
Wire the sensor bulb to the Fan Coil unit's terminal
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board as described in the sensor's installation
instructions.
WARNING
1 – Cassette unit
2 – Water outlet pipe
19
3 – Water inlet pipe
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