Trane VAV VV550 LonTalk, Руководство по установке и эксплуатации

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VAV-SVP01A-EN 61
VAV VV550 Controller Device Home Tabs: Instructions
Standby Heating Minimum Airflow: Occupied standby mode is used to reduce the heating and
cooling demands during the occupied hours when the space is unoccupied. It can be activated for
a classroom currently not in use. Standby Heating Minimum is the minimum amount of airflow
desired when in the heat mode during this mode.
Heating Minimum Airflow: The VV550 will not drive its position/flow below this value under
normal operating conditions while in the HEAT mode (warm air in the supply duct) or while it is
using local heat.
Heating Maximum Airflow: The controller enters maximum flow heat on receipt of a
communicated command and remains in maximum flow heat until the command changes. The
controller maintains the flow rate at the heating maximum airflow. This is normally used with a
rooftop unit with staged heat that needs a Max constant volume of air movement to keep the heat
exchanger from overheating and tripping the heat in the rooftop unit tripping on a high limit safety.
Local Heat Minimum Airflow: If the Min Local Heat flow is enabled, then the Min Local Heat flow
is used to determine the minimum position/flow instead of the Min Heating Flow when local heat
is on. The entry for Min Heating Flow must be less than or equal to the entry for the Maximum Flow.
Air Valve Setup
Minimum Position Setpoint: Type the minimum position for the air valve during the pressure
dependent mode.
Discharge Air Setup
Discharge Air Setpoint: Type the discharge-air setpoint. This field is available only if you
selected ventilation flow control on the Unit tab. When using ventilation flow control and in the
occupied mode, the VAV VV550 Controller controls to the active airflow setpoint and modulates the
heating capacity to keep the discharge-air temperature at the active discharge-air temperature
setpoint.
Inputs Tab
Figure 45. Inputs tab