Orion System MUA II D Controllers Operator Interfaces - Manual (Page 16)

Technical Guide
Operator Interfaces 16
Setpoint Screen #9
MUA II Spts IDxxxx
Set Sat Temp Reset
SPC= xxx Spt= xxx
SPC= xxx Rst= xxx
A Type III Thermistor Sensor connected to AIN 1 can be used to reset
the Supply Air Temperature. This screen allows the user to set the tem-
perature that the reset will begin at and the new reset Supply Air Tem-
perature range.
Description Minimum Default Maximum
Minimum Range 40° F 0° F 100° F
Maximum Range 40° F 0° F 100° F
Reset SAT Spt SAT Spt Spt + 50° F
Setpoint Screen #10
MUA II Spts IDxxxx
Set Dewpoint Reset
HUM= xxx Spt= xxx
HUM= xxx Rst= xxx
An Indoor Humidity Sensor connected to AIN7 can be used to reset the
Dewpoint Setpoint. This screen allows the user to set the relative hu-
midity percentage that the reset will begin at, and the new reset Dewpoint
Setpoint percentage range.
Description Minimum Default Maximum
Minimum Range 0% 0% 100%
Maximum Range 0% 0% 100%
Reset 35° F 55° F Dewpoint Spt
Setpoint Screen #11-14
MUA II Spts IDxxxx
Cooling Stage Delays
Staging Up : xx Min
Staging Down: xx Min
MUA II Spts IDxxxx
Cooling Stage Delays
Min Run Time: xx Min
Min Off Time: xx Min
MUA II Spts IDxxxx
Heating Stage Delays
Staging Up : xx Min
Staging Down: xx Min
MUA II Spts IDxxxx
Heating Stage Delays
Min Run Time: xx Min
Min Off Time: xx 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 except they
reference the Heating instead of Cooling.
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
Setpoint Screen #15
MUA II Spts IDxxxx
External Mod Heat
DeadBand.....: xxx°F
The External Heat Proportional deadband is the range through which
the external heating device will proportionally modulate.
Description Minimum Default Maximum
Proportional Band 1° F 5° F 30° F
Programming The MUA II D Controller