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KOOLMASTER PP20-VS2 rev.00
KOOLMASTER PP20-VS2
2. Transition from Tunnel to Natu-
ral Vent.
If the tunnel door
1.
is not used in natural vent.:
When the room temperature falls below the
natural ventilation’s start temperature [A], the
natural ventilation curtain opens during the
“Continuous Open” delay and the tunnel door
fully closes. When this delay has elapsed, the
natural curtain operates according to the natural
ventilation timer [B].
If the tunnel door is used in natural vent.:
2.
When the room temperature falls below the
natural ventilation’s start temperature [A],
the tunnel door and natural ventilation curtain
open during the “Continuous Open” delay.
When this delay has elapsed, both outputs
operate according to the natural ventilation
timer [B].
6.3.3. Natural Ventilation Settings
Select:
1.
Current Conditions (Main Menu)
Start/Stop*
Natural **
Curtain #x
* 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).
Natural Curtain 1 Settings
Use to navigate
Initial Open at
80.0
°F
Start Close at
78.0
°F
Start Open at
82.0
°F
Initial Time
20 sec
Open Time
15 sec
Close Time
15 sec
Off Time
15 sec
Wind Delay
10 sec
Tun.Close Dly
300 sec
Continuous Open
300 sec
Set the following parameters:
2.
(Refer to the previous section to get further informa-
tion on these parameters)
Initial Open at —
Set the temperature at
which the curtain opens for the first time.
The curtain opens during its initial moving
time at that moment. *
Note that the initial tem-
perature of natural ventilation is limited by the start
temperature of the last fan stage that belongs to the
lateral ventilation mode (power mode).
Start Close at —
Set the temperature below
which the curtain starts closing in timer mode
when the controller is in natural ventilation.
Start Open at —
Set the temperature above
which the curtain opens according to a timer
when the controller is in natural ventilation.
Initial Time —
The curtain opens during its
initial opening time when the controller
enters in natural ventilation. This opening
time can be adjusted from 0 to 900 seconds
(15 minutes)
Open / Close / Off Time —
Set the opening
and closing timers of the curtain (the
“Off
Time”
is common to both cycles). The open,
close and off times can be adjusted from 0
to 900 seconds (15 minutes).
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 900 seconds
(15 minutes).
GRAPH 2
From tunnel to natural ventilation
Temperature falls
Natural ventilation
Tunnel ventilation
1st tunnel
stage
(Open at)
(Close at)
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 Open Delay
(Factory Setting)
—
The natural ventilation curtain opens dur-
ing this delay when the controller returns in
natural ventilation (when tunnel ventilation
ends).
Summary of Contents for Koolmaster PP20-VS2
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