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3 Control unit
3.1 Controller
ComfoAir XL is equipped with a multifunctional
controller. The control unit comprises two different
PCBs. The main board, to which all internal
components can be connected, is located inside the
unit. All external functions are bundled at the
connection PCB. This is located behind the designer
front panel and is easily accessible to implement
numerous connections. The units have an automatic
frost-protection.
Essential features:
■
Connection to the building technology via ModBus communication
■
Constant Air Flow: to set fixed capacities
■
Filter monitoring: Pressure sensors measure the resistance via the filter
■
The unit software is equipped with a timeswitch as standard
■
Control via external sensor: CO
2
, pressure, relative air humidity
■
Various connections: 230 V, power relay
■
Generation of summer night cooling via digital input
■
Compatible with fire alarm system via digital input
■
Summer night cooling: activation via an external signal
■
Frost protection for the high-performance plate heat exchanger:
the supply fan is shut down when there is a risk of frost
ComfoAir XL is easy to change over from constant air
volume control to pressure control. This type of
control requires a pressure sensor to measure the
pressure in the supply air or extract air duct.
3.2 Supply
An integrated operating switch is located at
the operating side of the ComfoAir XL unit.
The connection terminals and connection board are
located behind the designer front panel. The board is
equipped with a display as standard, which can be
used easily to set the desired operating point.
The power supply is connected to the operating
switch. All versions, except for ComfoAir XL 6000,
are equipped with a 230 V/50 Hz/1~ power supply.
ComfoAir XL 6000 must be equipped with a
400 V/50 Hz/3~ power supply.
