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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.
Standalone with Room Control Module (RCM)
The product is supplied as above but with a room control module allowing users to adjust the
temperature and fan speeds of the product. Each wall controller is supplied with a separate
user manual about how to fit, wire and control the unit with it.
The RCM should be fixed to a wall near to the product within the space that the unit is
heating/cooling, away from any cold draughts or radiative heat sources. Wiring to the product
should be done with twisted cable with a length of less than 25m.
Master/Slave with other Biddle units
The TUC03 will allow multiple similar products to be connected together to ensure they all
heat/cool collectively. Where multiple units are used in the same space, Biddle recommend
that this function is enabled to avoid each unit competing against each other causing
substantial increase in running costs. For users who wish to use this feature please ask our
sales team for wiring diagram ENG001 that details the wiring and DIP switch settings needed.
From a Building Management Systems (BMS) with Bacnet MS/TP interface
The TUC03 contains a Bacnet MS/TP interface that will allow full and advanced control of the
product from external devices over the network. These options are only available for advanced
users and will alter the functionality of the product. Any changes of the controller's internal
values will invalidate any warranty concerning the product's controls and should only be
attempted by competent users.
Commissioning and Setting to Work
With the unit isolated, the following should be checked:-
Check filter is clean and free from dust
Check coil is clean and free from obstructions
Hand spin fans to ensure no damage has occurred during transportation and
installation
Check all water connections for leaks
Vent the coil to ensure that any trapped air is vented
Put a small amount of water into the condensate tray to prime the system
Check that all access panels are in place
Check that the controls enclosure cover is fitted
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