Orion System VAV II Controller v.1 - Manual (Page 49)

VAV/CAV/MUA Operator Interface SD
MUA II CONTROLLER SETPOINTS
49
The Push-Button Override Duration Setpoint allows you to adjust the
amount of time the Override will remain in effect when the Override
Button is pressed. To cancel the Override before the Override Duration
time period expires, press the Override Button for 5 to 10 seconds.
Description Minimum Default Maximum
Push-Button
Override Duration
0.0 Hr 2.0 Hr 8.0 Hr
Setpoint Screen #17 - HVAC Mode Sensor
Slide Offset
MUA II SPTS 0001
Slide Offset Sensor
Setpoint....: 0ºF
If the Unit Controller has a Space Temperature Sensor with the Slide
Adjust option installed, the HVAC Mode Enable Heating and Cooling
Setpoints can be offset by the HVAC Mode Sensor Slide Offset Setpoint
value. When the Slide Adjust bar is in the middle, no offset will occur.
If the Slide Adjust bar is moved all the way to the top of the Sensor, the
Heating and Cooling Setpoints will be raised by the Setpoint value you
have entered. If the Slide Adjust bar is moved all the way down to the
bottom of the Sensor, the Heating and Cooling Setpoints will be lowered
by the Setpoint value you have entered.
Description Minimum Default Maximum
HVAC Mode Sensor
Slide Offset
0ºF 0ºF 10ºF
Setpoint Screen #18 - HVAC Schedule
MUA II SPTS 0001
AHU Scheduled By
Schedule Num: 0
0=AHU 1-7=Scheduler
Normally, the MUA II Controller will use its own internal time clock
and week schedules to set the Occupied Mode of operation. If you have
several air handlers, you can connect an external scheduling device to
the communications loop and program the air handler for the desired
schedule. If the MUA II Controller is using its internal schedule, enter
<0>
for Internal.
Description Minimum Default Maximum
Schedule Number 0 0 1 to 7
MUA II Setpoint Screens
Setpoint Screen #19 - Supply Fan Starting
Delay Timer
MUA II SPTS 0001
Fan Time Delay
Before Activation
Can Occur..: 60s
This is the time delay that occurs before the fan is activated when the
unit switches into the Occupied Mode from Unoccupied Mode.
Description Minimum Default Maximum
Fan Start Delay Timer 1 Sec 60 Sec 180 Sec
Setpoint Screen #20 - Sensor Calibration for
SAT & OAT
MUA II SPTS 0001
Sensor Calibration
SAT: XX.X 0.0
OAT: XX.X 0.0
The Thermistor Type III temperature sensors connected to the MUA II
Controller can be calibrated using this screen. Enter a Positive value to
increase a reading and a Negative value to decrease a reading
Description Minimum Default Maximum
Sensor Calibration SAT -100.0ºF 0.0ºF +100.0ºF
Sensor Calibration OAT -100.0ºF 0.0ºF +100.0ºF
Setpoint Screen #21 - Sensor Calibration
Reset for SPC
MUA II SPTS 0001
Sensor Calibration
Reset Sensor
SPC: XX.X 0.0
If you are using a temperature sensor connected to analog input #1 on the
MUA II controller for resetting the Supply Air Temperature, the Therm-
istor Type III temperature sensor connected to the MUA II Controller
can be calibrated using this screen. Enter a Positive value to increase a
reading and a Negative value to decrease a reading.
Description Minimum Default Maximum
Sensor Calibration SPC -100.0ºF 0.0ºF +100.0ºF