Purge - Airstream Cumberland EXPERT LA User Manual

EXPERT LA
6.3.5

Purge

The purge function allows opening natural
ventilation curtains on a short period of time
to purge the air continuously.
Principle of operation
When a purge cycle starts, both curtains
open during their respective Purge Move
Time. They then stay still during the Purge
Time. When this delay has elapsed, both
curtains return to their initial position until
the beginning of the next purge cycle.
Frequency of the purge cycles
The frequency of purge cycles is deter-
mined by the Purge Cycle Time. A new
purge cycle time after that time delay has
elapsed.
Settings
Select:
Main menu
Start/Stop*
Natural**
Purge***
* A password may be required to access this menu.
** Accessible if at least 1 natural ventilation curtain is enabled
in the Installation Setup (section 4.5).
*** Accessible if the purge option is enabled in the Installation
Setup (section 4.5).
Purge Cycles
Curtain
position
Purge Cycle
Initial
position
Purge Purge
Move Time
Time
• Set the following parameters:
Purge Time
Once they are opened, curtains stay still dur-
ing this amount of time before returning to
their initial position. Set the purge time to
the desired value.
Purge Cycle
This the amount of time that separates two
purge cycles. The cycle includes the Purge
Move Time (sec. 6.3.2) and the Purge Time.
Set the purge cycle time to the desired value.
Purge
Move
Time
Purge cycles are not performed while
the controller is in tunnel ventilation.
Refer to section 6.3.2 to set the amount
of time each curtain need to open
during a purge cycle (Purge Move Time).
Purge Settings
Purge Time
Purge Cycle
EXPERT LA rev.00
Time
Main menu
Start/Stop
Natural
Purge
15 sec
180 min
47