Honeywell W7752D Manuel D’Utilisation

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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE  
 
 EN2B-0285GE51 
R0909 
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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.