EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE
EN2B-0285GE51
R0909
33
APPENDIX A: USING AN LNS TOOL TO COMMISSION A FAN COIL UNIT
Temperature Sensor Calibration
The temperature sensor in the Excel 10 wall modules can be
calibrated to correct for sensor inaccuracies, wire resistance,
etc. This allows the Excel 10 FCU Controller to sense the
space temperature with a high degree of accuracy.
Procedure
Select the controller being worked on with the LNS tool.
From within the LNS tool, with the desired project loaded and
the SLTA (Q7752A) connected to the LonWorks network,
perform the following procedure:
1.
Select a controller symbol from a network diagram.
2.
Click on
Calibrate
from the
Controller
menu. Once the
LNS tool logs on to the controller, the
Room
Temperature Calibration
dialog box appears.
3.
The box displays the
Current Value
of the sensor and
the current
Offset
; it also contains a field for entering
the actual
Measured Value
. When a value is typed in
and
Calibrate
is clicked, the offset value is
automatically calculated, displayed, and written to the
Excel 10 FCU Controller.
Fig. 19. Calibration dialog box
4.
Click on
Close
after completing adjustments.
Summary of Contents for Excel 10 W7752D
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