Cooling; Minimum Ventilation; Principle Of Operation; Timer Settings - Airstream EXPERT 2V2SA User Manual

EXPERT 2V2SA
6.

COOLING

6.1.

Minimum Ventilation

6.1.1. Principle of Operation

Definition: Minimum ventilation cycles are
activated when the room temperature is
lower than the set point. Running the fans
even though ventilation is not required for
reducing the room temperature is useful to
reduce humidity levels and supply oxygen
to the room. It also prevents the fans from
freezing in winter.
Minimum Ventilation Timer: During the "Time
On", the fans of stage 1 run at their minimum
speed and the status LED associated with
stage 1 is on; during the "Time Off", the fans
return to a stop and the status LED is off.
Note that the minimum speed of stage 1 can
automatically be adjusted with time by using
a curve (see section 6.1.4 on page 22).
Min.Vent
Ventilation Timer
Status
ON
OFF
Time On
Hints
The controller supplies maximum
voltage to the variable-speed fans
for 2 seconds at each start-up.
To run the fans continuously at
minimum speed, set the Time Off
to zero and Time On to any value
other than zero.
To stop the fans, set the Time On
to zero and Time Off to any value.
20
EXPERT 2V2SA, rev.10
Minimum
Time
Time
Off
Refer to section 6.2.3 to set the
minimum speed of stage 1.

6.1.2. Timer Settings

1. From the main menu, select: STAGE 1.
2. Use the navigation keys to select this
screen:
On: 30sec
Off: 120sec
3. Set the following parameters:
(The parameter adjustment process is explained
in section 3.2 on page 8).
On — Set the "Time On" of the minimum
ventilation timer. This parameter ranges
from 0 to 900 seconds and can be ad-
justed in increments of 15 seconds.
Off — Set the "Time Off" of the minimum
ventilation timer. This parameter ranges
from 0 to 900 seconds and can be ad-
justed in increments of 15 seconds.