Orion System MUA II D Controllers Operator Interfaces - Manual (Page 15)

Operator Interfaces
Technical Guide
15
from the Supply Air Setpoint gives the Unoccupied Heating Mode
Setpoint. When the Space Air Temperature drops below this setpoint,
the MUA II D will go to Unoccupied Heating Mode.
If the default setpoint of 30° F is used it will cancel the corresponding
unoccupied cooling or unoccupied heating mode.
Description Minimum Default Maximum
Unoccupied Cooling
Deadband
Cooling
Deadband
Setpoint
30° F 30° F
Unoccupied Heating
Deadband
Heatling
Deadband
Setpoint
30° F 30° F
Setpoint Screen #4
MUA II Spts IDxxxx
Systems With Re-heat
Dewpoint Control
Setpoint...: xxx°F
The systems capable of dehumidification will enter this mode of opera-
tion when the Outside Air Dewpoint rises above the Dewpoint Setpoint.
Description Minimum Default Maximum
Dewpoint Setpoint 40° F 55° F 80° F
Setpoint Screen #5
MUA II Spts IDxxxx
Enthalpy Staging
Deadband....: xxxBTU
Hysterisis..: x.xBTU
The Enthalpy Deadband if the amount Enthalpy in the Outside Air
needed to activate an extra stage of cooling. The Enthalpy Hysterisis
is use to avoid unnecessary cycling of the cooling stages when the Out-
side Enthalpy is close to the setpoint.
Description Minimum Default Maximum
Enthalpy Deadband 3 BTU 5 BTU 20 BTU
Enthalpy Hysterisis 0.5 BTU 1 BTU 2.5 BTU
Setpoint Screen #6
MUA II Spts IDxxxx
Heat Delay During
Dehumidifcation
Will Occur..: xxxMin
If heating during dehumidification is configured, this is the amount of
time the heating call will be delayed after the dehumidification is acti-
vated.
Description Minimum Default Maximum
Heat Delay 0 Min 2 Min 10 Min
Setpoint Screen #7
MUA II Spts IDxxxx
Alarm Limits
Hi SAT Limit.: xxx°F
Lo SAT Limit.: xxx°F
If the Supply Air Temperature ever rises above the Hi SAT Limit or
drops below the Lo SAT Limit for a user defined period of time, an
alarm is generated.
Description Minimum Default Maximum
Hi SAT Limit 50° F 150° F 150° F
Lo SAT Limit 0° F 0° F 70° F
Setpoint Screen #8
MUA II Spts IDxxxx
Supply Air Alarms If
Out Of Range For
xxx Minutes
This is the amount of time the Supply Air Temperature must be outside
either the Hi or Lo SAT Limit setpoint before it generates an alarm.
Description Minimum Default Maximum
Minutes 0 Min 30 Min 300 Min