36
EXPERT LA rev.00
EXPERT LA
5.3.3
Curve Offset
The curve offset parameter allows you to adjust
the value of all curve points while the curve is run-
ning.
Select:
Main menu
Set Point
Curve offset parameters are only dis-
played while the set point curve is
running.
•
Set the following parameter:
Set point curve offset
Select the number of degrees that need to
be removed or added to all steps of the set
point curve (+/- 10°F).
Accessible if the set point curve is currently run-
ning.
Main menu
Set Point
SetP Curve
Set Points
Use to navigate
Set Points
Current
75.5 °F
Day
70.0 °F
Night
75.5 °F
Clean Mode
35.0 °F
Outside
75.0 °F
Curve Offset
0.0 °F
57
EXPERT LA rev.00
EXPERT LA
6.6
0-10V Air Inlet
The first 0-10V output of the controller can either
be used to control an air inlet or variable-speed fans.
This output operates according to the average tem-
perature of its assigned temperature probes (see
sec. 4.7.3).
When a 0-10V air inlet is used, you must associate
an inlet opening with the start-up of each fan stage.
As the room temperature increases and new stages
are activated, the inlets will open or close accord-
ingly.
Inlet opening in minimum ventilation
The inlet is at its “Closed” position during the Off
Time portion of minimum ventilation cycles; it opens
to the position associated with stage 1 during the
On Time.
Over-opening
A supplementary stage can be programmed in or-
der to continue opening the inlet beyond the activa-
tion temperature of the last ventilation stage. This
over-opening stage is used to direct the airflow more
efficiently during periods of warm weather. When
all reference points of ventilation stages are defined,
the user can specify the temperature at which the
inlet reaches its over-opening position (Start T° of
the last stage + over-opening bandwidth).
Closing Inlets
If vent doors are programmed to close in natural
ventilation or at a specific tunnel ventilation stage,
the 0-10V air inlet will close at the same moment.
0-10V Mode: Automatic / Manual
You can manually control the opening of a 0-10V
output by using the manual control mode. While
this mode is used, the controller stops controlling
the output and lets you choose the inlet opening.
Operating Diagram of a
0-10V Air Inlet
Inlet
Opening (%)
CLOSED
Stage 1
starts
ROOM
TEMP.
Stage 2
starts
Stage 3
starts
Stage 4
starts
Stage 1
opening
Minimum
Ventilation
Stage 2
opening
Stage 3
opening
Stage 4
opening
Last stage
starts
Over-opening
bandwidth
Last stage
opening
Over opening
