Trane VAV-UCM 4.2, Инструкция по установке и обслуживанию, Страница: 34 / 88

34 VAV-SVX01C-EN
UCM Programming and Operation
Status Tab
Unit Info
Unit Type: The different types of units for the selected UCM.
Software Revision: The version of the UCM software.
Setpoints
Active Heating : The active (or actual) heating setpoint currently used by the UCM.
Active Cooling: The active (or actual) cooling setpoint currently used by the UCM.
Zone Sensor: Shows the setpoint set at the zone sensor for the controlled space.
Control
Mode: Shows whether the UCM is in occupied or unoccupied mode. The control mode
determines which heating or cooling setpoints to use.
Action: Shows the UCM’s heating or cooling action. The cool control action modulates the air
valve as if the supply duct air is colder than the space temperature. The heat control action
modulates the air valve as if the supply duct air is warmer than the space temperature.
Binary Input
Type: For version 4.0 or higher UCMs, shows whether the BIP is configured for occupancy or
as a Generic BIP.
Status: Shows the position of the binary input Open/Closed as a generic input or Occupied
Unoccupied from an occupancy input.
Fan
Type: The type of fan for the unit may be Series, Parallel, or -- (none).
Status: Shows whether the fan is enabled or disabled.
Present Value: Shows whether the fan is on or off.
Auxiliary Input
Type: Shows the two types of auxillary inputs, temperature and C0
2
. They are mutually
exclusive to one another.
Value: The displayed value will reflect either the temperature (if it has a temperature sensor
input) or the PPM (if it is configured with a C0
2
input).
Other
Position: The air valve or damper position.
Flow: This line displays the unit's airflow rate expressed in the flow units selected in the setup
menu. This line will not be shown if the UCM is using position control instead of flow control.
The UCM will use position control if the flow sensor is failed or not installed. The UCM will also
use position control if the unit's airflow rate is less than 5% or greater than 110% of the unit's
cataloged CFM. For example, the UCM will use position control for a size 600 CFM unit if the
flow is less than 30 CFM (5%) or greater than 660 CFM (110%).
Note: Although the UCM will read flow down to 5% of cataloged and up to 110% of
cataloged, the range of MIN FLOW settings is 0%, or 10% to 100% of cataloged. The
range of MAX FLOW settings is 100% of cataloged. In the example above, the
lowest allowable MIN FLOW set point is 60 CFM (zero is also permissible) and 600
CFM is the highest allowable MAX FLOW set point.
Zone Temp: The temperature, as reported by the zone sensor. If the UCM is at version 4 or
greater and the unit type is Bypass Damper Round or Rectangular, this field is replaced by the