Cumberland Expert-32P, User Manual

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Expert-32P rev.11
The Expert-32P controls up to 10 on-off fan stages. These stages
operate in a sequence to increase the level of ventilation as the room
temperature rises. The user defines a start and stop temperature for
each stage. When the room temperature reaches the start temperature,
the stage is activated. The stage is deactivated when the temperature
drops to the stop temperature. Fan stages can also be configured to
operate in timer mode. The following diagram shows how fan stages
operate.
Start temperatures are defined with respect to the set point and with
respect to each other. This means that when one of these values is
adjusted, all the consecutive values are adjusted by the same amount.
For example, if the set point is increased by 1°F, the start temperatures
for all fan stages will be increased by the same amount. The minimum
temperature difference between two start temperatures is 0.5°F. Note
that stop temperatures cannot overlap the previous stage's start tem-
perature even if this means the differential will be smaller than the
prescribed value.
Set Point
Start Temp.
Stage S
Start Temp.
Stage S+1
Stage S
Stage S+1
Stage S fans
turn on
Stage S fans
turn off
Stage S+1
fans turn on
Stage S+1 fans
turn off
T°
Ventilation
Level
FAN SETTINGS
Stop Temp.
Stage S
Stop Temp.
Stage S+1