Technical data

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Features
• The HDB controller is a microprocessor-based controller designed to control
and optimise the operation of hydronic terminal fan coil units.
• Factory-installed on the terminal fan coil - The controller is factory-installed
on the terminal fan coil; the assembly is also tested at the factory. As a result,
field installation is extremely simple.
• Ease of grouping - As an option, the HDB control can be equipped with a
grouping board that is used to connect up to 15 units with a bus. All units
connected together will operate under the same conditions.
• Louvre control - For terminal fan coils equipped with motorised louvres, the
HDB controls the louvre position as defined by the user or in swing mode.
• External contact - The control has an input that can be used to remotely set
the unit to economy mode.
• Scheduling - If the unit is used with an infrared user interface, unit operation
time can be scheduled on a daily basis. Three start times and three stop times
can be programmed.
• Timer - If the unit is used with an infrared user interface it can operate for a
predefined duration before switching to eco mode or o.
User interfaces
Depending on the application, two user
interface types can be selected:
• a wired user interface that can
be mounted on the wall or inside
compatible terminal fan coils (42N)
• an infrared user interface to be
used together with a wall-mounted
infrared received or a receiver
incorporated in compatible terminal
fan coils (42GW)
HDB
HDB CONTROLLER
Controls