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Access to the connection electrical block is via removing the Controls Enclosure cover.
Connecting the Controls Cabling
The unit's controls cables, sensor leads and BMS communication cable should not be routed
alongside or in the same cable tray as the mains 230 Volt power. A separation gap, in line with
current industry best practice, should be maintained to ensure any interference is kept to a
minimum.
The product is available with multiple options for controls:
•
No controls – the unit is supplied for the installer to supply and fit their own controls.
Project specific controls (free issued) – for information on how to use the product, the
•
installer should refer to the project specific wiring guides and controller data sheets to
ensure correct connection and operation of the unit.
•
Biddle specified controls – a digital controller is supplied and fitted to control the
temperature and fan speeds with optional wall controllers.
The remainder of this section is related wholly to the Biddle Specified Controls.
Biddle Specified Controls
If specified at time of order, the product will be delivered with a factory fitted Johnson Controls
TUC03 to allow the unit to operate in the following ways:
•
Standalone
Standalone with a room controller
•
•
Master/Slave with other Biddle units
From a Building Management Systems (BMS) with Bacnet MS/TP interface
•
Standalone
The TUC03 is a configurable direct digital controller (DDC) that will control the fan speed and
valve actuators based on sensors fitted within the product to effectively manage the space
temperature. By default, the product will operate from a fixed set-point of 22
user comfort and control we recommend that a room controller (detailed below) is fitted.
The connection block is clearly labelled with L (Live), N (Neutral) and
(Earth).
Once installed, care must be taken to ensure that the fixed wiring
insulation is protected from hot surfaces by either positioning it away
from the surfaces, or using insulating sleeving with an appropriate
temperature rating.
Page 9
C. For optimal
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