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EXPERT WW rev.12
EXPERT WW
6.5. Vent Doors (Inlets)
The controller can control the opening of two
vent door (inlet) outputs. These vent doors
(inlets) either open and close as a function
of temperature or as a function of static
pressure.
If they operate as a function of temperature,
the first vent door (inlet) output can also use
a potentiometer or can operate in timer mode
(whereas the second output can only run in
timer mode).
The following sections explain how vent
doors (inlets) operate depending on their
operating mode:
1. Temperature-based, using a potenti-
ometer
2. Temperature-based, using a timer
3. Static pressure-based.
Set the operating mode of vent doors (inlets)
in the Installation Setup (section 4.5).
6.5.1. Timer-based Vent Doors
(Inlets)
6.5.1.1. Principle of Operation
When timer-based vent doors (inlets) are
used, you must first specify the total time that
is required to open each actuator. Then, you
must associate an opening with the start-up
of each fan stage (openings are defined as a
percentage of the total opening time). As the
room temperature increases and new stages
are activated, vent doors (inlets) will open or
close accordingly.
Vent door (inlet) opening in minimum ventila-
tion:
Vent doors (inlets) are at their
“Closed”
position during the
“Off Time”
portion of mini-
mum ventilation cycles; during the
“On Time”
portion, they open to the position associated
with stage 1.
Over-opening:
A supplementary stage can be
defined in order to continue opening vent doors
(inlets) beyond the activation temperature of
the last ventilation stage. This over-opening
stage is used to direct the airflow more effi-
ciently during periods of warm weather. When
all reference points of ventilation stages are
defined, the user can specify the temperature
at which vent doors (inlets) reach their over-
opening position (Start T° of the last stage +
over-opening bandwidth).
Closing Vent Doors (Inlets):
Vent doors
(inlets) can either close when the control-
ler enters in natural ventilation or when the
controller reaches a user-defined tunnel
ventilation stage. Refer to the Installation
Setup chapter to close vent doors in natural
ventilation (section 4.5) or refer to section
6.4.3 to choose at what tunnel stage vent
doors (inlets) must close.
6.5.1.2. Vent Door Settings
1. Select:
Main menu
Vent/Inlet*
Vent door/ Inlet 1 is already displayed;
press Vent door/ Inlet 2 to display parameter
settings of the second inlet.
* This menu is accessible if at least one vent door
(inlet) output enabled in the Installation Setup (sec-
tion 4.5). A password may also be required to access
this menu (section 4.2).
Operating Diagram of a
Timer-based Vent Door (Inlet)
Stage 1
starts
Stage 2
starts
Min Vent.
Stage 3
starts
Stage 4
starts
Room T°
Last Stage
starts
Over-opening
bandwidth
Vent Door / Inlet
Opening
(% of the Total
Opening Time)
Total
Opening
Time
Closed
Min.vent.
opening
Stage 2
opening
Stage 1
opening
Stage 3
opening
Stage 4
opening
Last Stage
opening
Over-opening
Make sure you have selected a timer-
based vent door (inlet). Refer to section
4.5 to set vent door (inlet) functions.
Vent door (inlet) openings are defined
as a percentage of their total opening
time.
Vent Door/
Inlet 2
Auto-Reset
Vent Door/Inlet 1 Settings
Position
0 %
Test Mode
72.3 °F
Openings
Closed
0 %
Stage 1
10 %
Stage 2
20 %
Stage 3
30 %
Stage 4
40 %
Stage 5
50 %
Stage 6
60 %
Stage 7
70 %
Stage 8
80 %
Over Opening settings
Opening
100 %
Bandwidth
5.0 °F
Total Opening Time
2:00 m:s
2. Set the following parameters:
Position —
This is the current position of the
selected vent door (inlet). This value cannot
be modified.
