Trane VAV VV550 LonTalk Installation & Operation Manual Download Page 55

Page: 55 / 116

VAV-SVP01A-EN

VAV VV550 Controller Device Home Tabs: Instructions

Occupied Standby Cooling:

Based on the controller occupancy mode, the active space cooling

setpoint is the occupied stand by cooling setpoint, The controller can be placed in the occupied
standby mode when a communicated occupancy mode request (from a communicated occupancy
override, occupancy schedule, or occupancy sensor) is combined with an occupancy request from
the local (hardwired) occupancy binary input.

Note:

This setpoint allows inactive spaces in the occupied mode to float to a more energy saving
setpoint until occupancy mode deems it necessary to use another setpoint as its active
setpoint.

Occupied Cooling:

Set points have a range of 30.0°- 100.0°F (-1.1° - 37.8°C). If a zone sensor

thumbwheel set point is not being used, this set point will be used as the VAV VV550 Controller's
active cooling set point during occupied times. The cooling set point must be greater than or equal
to the heating set point plus 2.0°F (1.1°C).

Note:

Occupied cooling and heating set points must be set within the cooling set point high limit
and the heating set point low limit in order to control to the proper setpoints.

Occupied Heating:

Set points have a range of 30.0°- 100.0°F (-1.1° - 37.8°C). If a zone sensor

thumbwheel set point is not being used, this set point will be used as the VAV VV550 Controller's
active heating set point during occupied times. The cooling set point must be greater than or equal
to the heating set point plus 2.0°F (1.1°C).

Note:

Occupied cooling and heating set points must be set within the cooling set point high limit
and the heating set point low limit in order to control to the proper setpoints.

Occupied Standby Heating:

Based on the controller occupancy mode, the active space heating

setpoint is the occupied stand by heating setpoint, The controller can be placed in the occupied
standby mode when a communicated occupancy mode request (from a communicated occupancy
override, occupancy schedule, or occupancy sensor) is combined with an occupancy request from
the local (hardwired) occupancy binary input.

Note:

This setpoint allows inactive spaces in the occupied mode to float to a more energy saving
setpoint until occupancy mode deems it necessary to use another setpoint as its active
setpoint.

Unoccupied Heating:

Set points have a range of 30.0° - 100.0°F (-1.1° - 37.8°C). This heating set

point is used when the VAV VV550 Controller is unoccupied. The unoccupied cooling set point must
be greater than or equal to the unoccupied heating set point plus 2.0°F 1.1°C).

Active Setpoint

Space Temperature:

The Active Space Temperature can be either from a local analog input, as

measured by the zone sensor, or as a remote communicated value. If both are present, the
controller uses the communicated value. The controller uses the network variable output space
temperature to report the space temperature value that it is using.

Active setpoint:

The set point cannot be edited and reflects the set point currently being used for

Heating/Cooling temperature control. The Active Space Setpoint can be either from a local analog
input, as measured by the zone sensor, or as a remote communicated value. If both are present,
the controller uses the communicated value. The controller uses the network variable output
Effective setpoint to report the space active setpoint value that it is using.

Airflow:

The airflow measured by the airflow sensor in the VAV box.

Setpoint Limits:

After the controller completes all setpoint calculations, the calculated occupied setpoint is
validated against the following configured space setpoint limits:

•

Cooling Setpoint High Limit

•

Cooling Setpoint Low Limit

•

Heating Setpoint High Limit