Airstream TC5-2V4SA User Manual page 5

TC5-2V4SA
HUMIDITY COMPENSATION
The stage 1 minimum speed can be adjusted automatically as a function of
relative humidity. As humidity increases, the minimum speed of stage 1
fans increases proportionally to compensate for the change.
FULL-SPEED FAN START-UP
In order to overcome the inertia of the ventilation system components and
de-ice the fan blades in cold weather conditions, the controller supplies
maximum voltage to the variable speed fans during the 2 seconds immedi-
ately following each start-up.
DE-ICING CYCLE
A de-icing cycle is provided for de-icing stage 2 variable-speed fans in cold
weather conditions.
FOUR INDEPENDENT TEMPERATURE PROBE INPUTS
Up to four temperature probes can be connected to the controller in order to
obtain a more accurate reading of the average room temperature and a
faster reaction time.
OVERLOAD AND OVERVOLTAGE PROTECTION
Fuses are installed at the input and outputs of the controller to protect its
circuitry in the case of an overload or overvoltage.
COMPUTER CONTROL
The controller can be connected to a computer, thus making it possible to
centralize the management of information and diversify control strategies.
CONTROL OF AIR INLET MOVEMENT
If the TC5-2V4SA is used in combination with a PF-5B controller, the move-
ment of the air inlets can be coordinated with the operation of the fans using
a potentiometer located on the panel drive. This allows the air inlets to be
adjusted correctly, without the influence of uncontrollable factors such as
wind or air from adjoining rooms.
TEST MODE
A test mode allows you to simulate temperature changes and verify control-
ler performance.
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TC5-2V4SA rev.06