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EXPERT VT110
6.2.1.3. Outside Temperature
Compensation
Stage 1 and 2 bandwidths can be adjusted
automatically as a function of outdoor temperature compensation. As the outside
temperature decreases, stages 1 and 2 bandwidths increase gradually to compensate for
the change. The user specifies the bandwidth
used in summer as well as the bandwidth used
in winter for both variable outputs of stages
1 and 2. The bandwidths can be adjusted
from 1 to 10°F (0.6 to 5.6°C). The winter’s
bandwidth must be even or greater than the
summer’s bandwidth.
Bandwidths
of stages
1&2
Bandwidth as a
Function of
Outside Temperature
6.2.2. Settings
6.2.2.2. Season Change
6.2.2.1. Start/Stop Temperatures
If the outside temperature compensation on
the bandwidths of stages 1 and 2 is used, you
must specify at what outdoor temperature
winter and summer start.
Note that the start temperature of a fan
stage is likely to change if the set point
changes or if the bandwidth changes
according to the outside temperature.
»» START / STOP TEMPS
»» 9. Outdoor Comp.*
1. Select:
»» START / STOP TEMPS
»» 2. Fan Stages
Ventilation
Stage 1 On
Var1 bandwidth
Var2 bandwidth
70.0
2.0
2.0
2. Set the following parameters:
(Refer to the previous section to get further information on these parameters)
Winter
Bandwidth
On & Off Temperatures — Set the start and
stop temperatures of each fan stage.
Summer
Bandwidth
Winter
T°
Summer
T°
Outside
T°
Note that the ventilation stages’ start
temperatures will be adjusted following
the bandwidth fluctuations as the outside
temperature changes.
1. Select:
Notes: Stage 1 stops when the room
temperature falls 0.3 °F below its start
temperature.
*This menu is accessible if the outside compensation
on stages 1-2 is enabled (sec. 4.5).
Outdoor Compensation
Summer Temp.
60.0
Winter Temp.
50.0
2. Set the following parameters:
Summer Temp. — Set the outside temperature at and above which summer bandwidths
must be used.
Winter Temp. — Set the outside temperature below which winter bandwidths must
be used.
The minimum difference between two
consecutive start temperatures is of
0.5 °F (0.3 °C).
The start temperature of a fan stage
must be greater value than its stop
temperature.
Var1 & Var2 bandwidth — Set the number of
degrees required for variable fans to reach their
full speed in stages 1 and 2. If the “Outside
temperature compensation” function is used, set
these bandwidths separately for winter and for
summer (see sec. 4.5).
EXPERT VT110 rev.15
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