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EXPERT WW rev.12
EXPERT WW
Wind Delay —
When the controller is in natu-
ral ventilation and temperature falls below
the
Start Close At
temperature or rises above
the
Start Open At
temperature, the curtain
only starts moving after the wind delay has
elapsed. This way, the curtain does not move
when wind drafts cause sudden temperature
changes. Set the wind delay to the desired
value. Adjustable from 0 to 300 seconds
(5 minutes).
Tunnel Close Delay
(Factory Setting)
—
This
delay is launched at the beginning of the first
tunnel stage. Once it has elapsed, the control-
ler closes the natural ventilation curtain.
Continuous Delay
(Factory Setting)
—
The
natural ventilation curtain opens during this
delay when the controller returns in natural
ventilation (when tunnel ventilation ends).
Purge move time —
This is the amount of time
required to open the curtain during a purge
cycle (see sec. 6.3.6). Set this parameter
separately for each curtain. *
This parameter
is accessible if the purge option is enabled in the
Installation Setup (section 4.5).
6.3.4. Curtain Compensation
The controller can slightly adjust opening of
the curtains as a function of outside tempera-
ture: as the outside temperature increases,
the controller increases the opening time of
the curtains. As a result, curtains open faster
when the outside temperature gets warm.
Likewise, when the outside temperature
gets cold the controller increases the closing
time of the curtains. This compensation is
optional. To use it, enable the curtain com-
pensation in the Installation Setup (section
4.5). Then, set the outside temperature set
point (sec. 5.1).
When temperature rises:
When the curtain opens, the controller
increases the curtain’s
“On Time”
by 4%
for every 1°F (0.6°C) in the compensation
interval (i.e. an interval of 3°F means a
12% increase). The curtain’s
“Off Time”
is
decreased by the same amount.
Compensation interval
Outside T°
Set Point
Current
Outside T
When temperature falls:
When the curtain closes, the controller in-
creases the curtain’s
“On Time”
by 4% for ev-
ery 1°F (0.6°C) in the compensation interval
(i.e. an interval of 3°F means a 12% increase).
The curtain’s
“Off Time”
is decreased by the
same amount.
Compensation interval
Outside T°
Set Point
Current
Outside T
6.3.5. Stopping the Fans in Natural
Vent.
Whisker switches
are used to stop some
on/off fan outputs when the controller is in
natural ventilation (refer to section 4.8 to
select what fan relays must turn off in natural
ventilation). These switches tell when the
curtains are sufficiently opened.
When temperature rises
(point A on the graph)
The controller gradually opens the curtain as
temperature rises. It can also disable a chosen
selection of fans when the curtain is sufficiently
opened (when the curtain has reached its
whisker switch).
When temperature falls
(point B on the graph):
At point B, the curtain is already opened and
the fans are stopped. The controller gradually
closes the curtain as temperature falls. The
controller restarts the fans when the curtain
closes and releases its whisker switch.
Security:
If the temperature drops suddenly
or if the whisker switch is defective, the con-
troller automatically restarts the fans when
the temperature falls 5°F (3°C) below the
lowest curtain’s closing temperature. When
this situation occurs, a defective whisker
switch alarm is posted to the alarm log.
Fan Shutoff
in Natural Vent.
The curtain
closes
in timer mode
The curtain
opens
in timer mode
The curtain
reaches the
Whisker switch:
the fans turn off.
The fans restart
when the whisker
switch is released.
Room T°
Room T°
Curtain
status
Fan output
ON
ON
OFF
OFF
