User Manual

Siemens Building Technologies Application :51 RWD82/51 - 05.2001
HVAC Products RWD82 3
The main display shows ,
a) Whether Q1 is On or Off ( = off, = on )
b) Whether Q2 is On or Off ( = off, = on )
c) Whether day or night set point is selected. (
¤ = day,  = night)
d) X1 value ( room temperature) in ° C.
e) Auxiliary application selected ( REM for remote set point adjustment )
Other displays are available by pressing the + button, and the various
displays are listed below in sequence from the main display.
On entering any of the four set point displays, the setpoint on display can be
adjusted by pushing the enter/save button, increase value by pressing the
+ button or decrease the value by pressing the – button, and when the
required value is reached, press the enter/save button to save the new
value.
The alternative displays return to the main display after 20 seconds duration.
Press
buttons
Action Current display Selected display Selected display comments
Push + button
REM Q1 Q2 ¤ X1 SP – c  16.0c cooling night set point.
Push + button SP – c  16.0c X1 18.0c X1 - main temperature sensor reading
Push + button X1 18.0c X2SP 25.0c X2 - actual remote set point setting (day set point)
Push + button X2SP 25.0c Q1 ON Q1 – chilled water pump digital output, display on or off.
Push + button Q1 ON Q2 ON Q2 – chilled water valve digital output, display on or off.
Push + button Q2 ON REM 51 Control sequence diagram and application number display.
Push + button REM 51 REM Q1 Q2 ¤ X1 Back to main display
Values shown are either default values or nominated for information only