Commissioning Screen - Trane Symbio 210 Installation, Operation And Maintenance Manual

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Commissioning Screen

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BAS-SVX084A-EN
to increase further, raising the discharge air temperature, while the air valve remains at Airflow
Setpoint Reset Maximum Local Heat.
Discharge Air Temperature Reset Maximum: This is the maximum discharge air
temperature allowed when local heat (either modulating hot water or SCR electric) is on. Once
the controller has increased airflow to Airflow Setpoint Reset Maximum Local Heat, reheat
capacity is allowed to increase further, raising the discharge air temperature, but not above this
maximum limit.
Discharge Air Temperature Design Setpoint: When local heat (either modulating hot water
or SCR electric) is initially activated, the air valve will maintain position/flow at Airflow Setpoint
Reset Minimum Local Heat and begin increasing reheat capacity. Once reheat capacity has
increased to the point that the discharge air temperature has reached this design setpoint, the
controller will begin to modulate airflow between Airflow Setpoint Reset Minimum Local Heat
and Airflow Setpoint Reset Maximum Local Heat, while reheat capacity is modulated to
maintain the discharge air temperature at this design setpoint.
Note: When the parameters on this tab are used, leave Airflow Setpoint Minimum Local Heat
(found in the Flow Setpoints Setup section) at the factory configured value. If there is a
fault with the discharge air temperature sensor, the controller reverts to Airflow Setpoint
Minimum Local Heat when local heat is on.
Zero Air and Water Valve Position (Start Button): The calibration sequence enables the
controller to calibrate the air valve position and the water valve position, as well as calibrate
the flow sensor.
Auto-commissioning (Start Button): The controller auto-commissioning test sequence
validates both the proper operation of all outputs and the capability to measure all inputs. The
purpose of the test sequence is to minimize the labor required to commission the unit in the
field.
The auto-commissioning test does not require a flow sensor or a discharge or supply air
temperature sensor. If there is no flow sensor, the controller runs in pressure-dependent mode.
A temperature sensor in the discharge air stream is required for testing of the fan and the
reheat. The fan and the reheat are not tested if the discharge air temperature sensor is not
present. The fan is not tested if there is no fan. Local reheat is tested, if it is present. Remote
reheat is not tested.
The sequence starts on receipt of an auto-commission command from the Tracer TU service
tool start button or the Tracer SC. The auto-commission command contains a time/date stamp.
No third party tool can start the auto-commissioning sequence. You can then choose to
commission all VAV boxes or one VAV box. The results of auto-commissioning are contained
in a structured network variable called reported auto commissioning report. The controller
places the time/date stamp in the report. The structure is loaded with the default values for all
of the fields when the auto commissioning test sequence starts. The fields are updated with the
results as the sequence progresses. The data is held until the next auto-commissioning test.
If an auto-commission command is received in the middle of an auto-commissioning cycle, the
auto-commissioning sequence restarts. If an auto-commission command is received during
calibration, calibration aborts and restarts after auto-commissioning finishes. If an abort auto-
commission command is received during the calibration portion of the primary air valve test,
it is honored after the air valve calibration finishes.
Calibrate Air Valve (Start Button): Displays the Calibrate Air Valve dialog box. Use this air
balancing tool to perform a basic two-point air balance for the Symbio 210 controller. See the
Tracer TU Help for Programmable Controllers ("Configuring and Commissioning Equipment"
> "VAV Boxes" > "Using the Air Balancing Tool") for the correct procedure.
Symbio 210 Controller Points and Parameters
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