Cumberland EXPERT 64 Plus, Руководство пользователя

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EXPERT 64+, rev.12
EXPERT 64+
• CURTAIN: BASED ON THE
STATIC PRESSURE LEVEL
Start-up of Tunnel Ventilation:
The activation of tunnel ventilation linked
with the start-up of a user-defined tunnel fan
group. When the room temperature reaches
the start temperature of this group, the cur-
tain starts being adjusted according to the
static pressure level: it opens when the static
pressure level exceeds the high pressure set
point or closes when the pressure level de-
creases below the low pressure set point.
* Seasonal Pressure Set Points:
High and low pressure set points can auto-
matically be adjusted according to the outside
temperature. Using higher pressure set points
during winter allows reducing the cold air
intake: the pressure level must be greater
before the curtain can start opening. In sum-
mer, the pressure set points are decreased
so that the curtain can open and close with
fewer restrictions.
Seasonal Pressure
Set Point Changes
Static Pres-
sure Set
Points
Outside
T°
Winter T°
Winter
Hi
Summer
Hi
Winter
Lo
Summer
Lo
SummerT°
The pressure set points are automatically
adjusted according to the outside tempera-
ture. The following graphic illustrates how
they are calculated. Seasonal changes are
signalled by user-defined outside tempera-
tures (sec. 5.3).
Minimum Outside Temperature: The tunnel
ventilation mode can be disabled when the
outside temperature is too cold. This fea-
ture is optional and can only be used if an
outside temperature sensor is connected to
the controller.
Minimum Age: The minimum age is used to
prevent tunnel ventilation from being used
when the animals are too young. The user
defines the age above which the tunnel venti-
lation mode can start. The tunnel curtain will
never open until this age is reached.
Pre-Openings: Pre-opening delays are used to
open the curtain by a certain amount of time
before starting tunnel fan groups. The first
pre-opening delay is performed at the start-up
of tunnel ventilation (i.e., when the tunnel fan
group which activates the tunnel ventilation
mode starts). The other pre-opening delay is
performed when tunnel ventilation fully starts
(at the end of the transition between lateral
and tunnel ventilation). Note that all tunnel
fan groups are disabled while a pre-opening
delay is ongoing.
Wind Effect Delay: When the pressure level
exceeds the high or low static pressure set
points, the tunnel curtain starts opening or
closing continuously right after the wind
delay is elapsed. The high or low pressure
condition must be maintained over this delay
for the curtain to start moving. This avoids
opening or closing the curtain when a wind
draft causes fleeting variations in the pres-
sure level.
Closing Vent Doors: Vent doors start closing
at the start-up of a user-defined tunnel fan
group. Tunnel ventilation is fully enabled and
the controller starts using the static pressure
set points at that moment.