43
EXPERT 64+, rev.12
EXPERT 64+
6.4. Vent Doors
6.4.1. Principle of Operation
Each vent door output (sidewall or attic vents)
moves according to the variations in the static
pressure level: it opens when the static pres-
sure level gets above the high pressure set
point and closes when pressure gets below
the low pressure set point.
Activation of the vents: If the controller
uses 1 vent door output, the output is au-
tomatically used to control a sidewall vent.
The sidewall vent is active as long as the
controller is in lateral or minimum ventilation;
it closes when the controller enters in tunnel
ventilation.
Opening of the Vent Doors as
a Function of Static Pressure
Time
Static
Pressure
The
vent.d. open
The
vent.d. close
Sidewall
Lo pressure
limits*
Sidewall
Hi pressure
limits*
The vent doors
start closing
after the Wind
Delay has
elapsed.
The vent doors
start opening
after the Wind
Delay has
elapsed.
The vent doors
stop closing
The vent doors
stop opening
Wind
Delay
Wind
Delay
The
vent.d. do not move
*The Hi and Lo pressure limits can automatically be adjusted according to the outside temperature
If the controller uses 2 vent outputs, the first
output is reserved to control an attic vent and
the second output controls a sidewall vent.
As long as the temperature in the room is
lower than a user-defined stop temperature,
the air intake is exclusively provided by the
attic vent (sidewall vents remain closed).
When the room temperature exceeds the
room’s stop temperature, the attic vent stops
moving and the air intake becomes provided
by the sidewall vent. Refer to section 6.4.3 to
specify at what moment the attic vent must
stop being used.
Refer to section 6.4.3 to set the attic
vent parameters.
Summary of Contents for EXPERT 64 Plus
Page 1: ...EXPERT 64 Temperature Controller User s manual...
Page 62: ......
Page 76: ...M 890 00077 rev 12 REV 07...
