Airstream INTER 2V4SA User Manual Download Page 37

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INTER 2V4SA, rev.02

INTER 2V4SA

Precautions

WARNING: Read and save these in-
structions!

Safety may be jeopardized if the equipment is
used in a manner not specified by the manu-
facturer. Carefully read and keep the following
instructions for future reference.

We strongly recommend installing supplemen-
tary natural ventilation as well as a backup
thermostat on at least one cooling stage.

Although fuses at the input and outputs of
the controller protect its circuits in case of
an overload or over-voltage, we recommend
installing an additional protection device on
the controller’s supply circuit.

The room temperature where the controller
is located must always remain between 32°F
and 104°F (0°C to 40°C). Indoor use only!

To avoid exposing the controller to harmful
gases or excessive humidity, it is preferable
to install it in a corridor.

If  the  equipment  is  used  in  a  manner  not
specified  by  the  manufacturer,  the  protec-
tion  provided  by  the  equipment  may  be
impaired.

Do not spray water on the controller! In
order to clean the control, wipe it with a
damp cloth.

Before servicing or cleaning unit, switch
power off at service panel and lock the
switch disconnecting means to prevent
power from being switched accidentally.
When the service disconnecting means
cannot be locked, securely fasten a
prominent warning device, such as a
tag, to the service panel.

Features

The  INTER  2V4SA  is  an  electronic  device
used for environmental control in livestock
buildings.  It  allows  the  user  to  maintain  a
specified  target  temperature  by  controlling
the operation of ventilation and heating equip-
ment. The controller can control two stages
of  variable  speed  fans  and  two  stages  of
either constant-speed fans or heating units.
In  addition,  one  of  the  constant-speed  fan
stages can be configured as a mist cooling
stage.

Five-digit display:

A five-digit display provides a high level
of accuracy, allowing the user to specify a
temperature to within one tenth of a degree
(in Fahrenheit or Celsius units).

Pilot lights:

Pilot  lights  indicating  the  state  of  outputs
allow  the  user  to  monitor  the  operation
of  the  system  without  having  to  enter  the
building.

Minimum ventilation cycles:

When ventilation is not required for cooling,
the first stage fans can be operated either
continuously or intermittently to reduce the
level of humidity and supply oxygen to the
room.

Ramping functions:

Ramping  functions  provide  an  automatic
adjustment  of  the  set  point  and  minimum
ventilation  fan  speed  over  a  given  period
of time.

Choice of 10 motor types:

The variation in motor speed resulting from a
change in voltage will depend on the make and
capacity of the motor. In order to achieve a high
degree of compatibility between controller and
motor, the user can choose from among ten
different motor types, thus ensuring that the
correct voltage is supplied.

Zoned or cascading heaters

INTER 2V4SA, rev.02

INTER 2V4SA

i) These initial parameter settings will not be re-
tained in the controller's memory. Each new setting
will replace the preceding one.

ii) If the power supply is cut off, the last parameter
settings will be retained in memory until the power
is restored.

15.

Factory Settings

PARAMETER

FACTORY

SETTING

RANGE

OF VALUES