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Wired Thumbwheel Calib
The thumbwheel calibration offset has
a range of -10° – 10°F (-5.6° – 5.6°C). The
set point will be displayed with the set
point calibration offset applied. The
UCM will add the offset to the value
being read by the UCM's thumbwheel.
Cooling Flow Correct
Present Cooling Flow
Measured Cooling Flow
This Present Cooling Flow shows the
current flow being reported by the
UCM. If the Present Cooling Flow is
incorrect, the operator can enter the
Measured Cooling Flow and the
Cooling Flow Correct calibration factor
will automatically be recalculated. For
example, if a measured flow indicates
330 CFM, and the UCM's flow sensor
reports 300 CFM, the measured flow
(330) can be entered, which will calcu-
late a calibration factor of 1.10. If the
UCM is using position control, the
current flow reported by the UCM
should be 0 and any entry on the line
will generate an "Entry too large. " See
Chapter 7 for more information.
VAV-SVX01B-EN
UCM Programming
and Operation
Wired Sensor Type
This line is used to edit the type of
temperature sensor being used. The
sensor type can be selected as either
Thermistor or RTD. Note: Factory
supplied sensors are Thermistors.
Wired Sensor Use
This input determines the function of
the wired zone temperature sensor.
Select Averaged to use the sensor as
part of a wired system OR to use the
sensor as an averaging sensor in a
wireless system. Average will use the
sensed temperature in the temperature
averaging calculation and set point
temperature will be averaged according
to the set point vote. If this is the only
sensor the average will be the sensed
temperature. Backup means the UCM
will use this temperature only if the
primary sensor assigned to the UCM
has stopped communicating. First
backup means the UCM will look for a
wired sensor first if the wireless sensor
fails. Second backup means the UCM
will look for a wireless backup sensor
first if the wireless sensor fails. Select
not used if no sensor is present or to
ignore the wired zone sensor.
Wired Set Point Vote
Set point vote determines the weighting
of the set point vote. The range is 0-9.
This number represents the number of
votes the sensor gets when the set
points are averaged. If "0" is selected
the sensor gets no vote.
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