Orion System SA Controller - Manual (Page 23)

SA Controller Operator Interface
Programming
23
SA Controller Confi guration Screens
Confi guration Screen #34 - Broadcast VAV
Boxes Force to Fixed
SA Unit Cnfg ID 102
Broadcast VAV Boxes
Force To Fixed: NO
[0=NO 1=YES]
Enter <1> for YES to have all VAV/Zone controllers connected to this
SA Controller forced to their “Fixed Airfl ow” Position during the Morn-
ing Warm-up Mode of operation. Enter
<0> for YES if you do not want
this to occur. See the VAV/Zone controller Setpoint Screens for setting
of the “Fixed Airfl ow” position. Default is NO.
Confi guration Screen #35 - 1 HVAC Unit with
Boxes on Multiple Loops
SA Unit Cnfg ID 102
1 HVAC Unit w/ Boxes
On Multi. Loops: NO
[0=NO 1=YES]
Enter <1> for YES to have all broadcasts that have been confi gured on
Confi guration Screens 29 through 34 sent to all local loops on the entire
system, not just the local loop the SA Controller is on. This is normally
only required if you have a large HVAC unit that requires more than
the 58 VAV/Zone Controllers normally allowed on the local loop. This
allows other VAV/Zone Controllers connected on additional local loops
to receive the required broadcasts. This only is allowed when you have
a single SA Controller with VAV/Zone Controllers on multiple loops.
Other SA Controllers or add-on devices may be connected but no other
SA Controllers with VAV/Zone Controllers can be connected on the
system. Enter
<0> for NO. Default is NO.
Confi guration Screen #36 - Uses R410A
Refrigerant
SA Unit Cnfg ID 102
Unit Uses R410A
Refrigerant: YES
[0=NO 1=YES]
Enter <1> for YES if your HVAC unit uses R410A Refrigerant. Enter
<0> for NO. Default is YES.
Confi guration Screens #37-40 - Cooling &
Heating Stage Delays
SA Unit Cnfg ID 102
Cooling Stage Delays
Staging Up...: 3 Min
Staging Down : 1 Min
SA Unit Cnfg ID 102
Cooling Stage Delays
Min Run Time: 5 Min
Min Off Time: 3 Min
SA Unit Cnfg ID 102
Heating Stage Delays
Staging Up...: 3 Min
Staging Down : 1 Min
SA Unit Cnfg ID 102
Heating Stage Delays
Min Run Time: 2 Min
Min Off Time: 1 Min
Both the Heating Stages and the DX Cooling Stages utilize Staging Up
and Down Delay Periods between stages and Minimum Run Times
and Off Times.
Both modes have their own set of Staging and Run Delay Times. The
Heating Timer Screens look exactly the same as the Cooling Timer
Screens except they reference the Heating settings instead of the Cool-
ing settings.
See the Sequence of Operation Manual for information on how these
Delays and Run Times are used.
Description Minimum Default Maximum
Cooling Stage Up 3 Min 3 Min 15 Min
Cooling Stage Down 1 Min 1 Min 15 Min
Cooling Min Run Time 5 Min 5 Min 15 Min
Cooling Min Off Time 3 Min 3 Min 15 Min
Heating Stage Up 3 Min 3 Min 15 Min
Heating Stage Down 1 Min 1 Min 15 Min
Heating Min Run Time 2 Min 2 Min 15 Min
Heating Min Off Time 1 Min 1 Min 15 Min