Orion System OE392-10 System Manager TS - Manual (Page 33)

SMTS Technical Guide
VCM & VCM-X Controllers
33
VCM & VCM-X Miscellaneous Setpoints
Controlling Week Schedule
If the VCM is not using its own internal week schedule, enter the external
schedule number that will control this unit. Enter 0 to use the internal
schedule. Enter 1 through 5 to use an external schedule. A GPC Plus is re-
quired for schedules 1 through 5. High limit = 5; Low limit = 0; Default = 0.
Push-Button Override Duration
If the VCM-X has a Space Temperature Sensor installed and it has the
Override Button option, the HVAC unit will initiate the Occupied Mode
any time the Override Button is pressed and held for less than 3 seconds.
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. High
limit = 8 hours; Low limit = 0 hours; Default = 2 hours.
Maximum Slide Offset Effect
If the VCM-X has a Space Temperature Sensor with the Slide Adjust
option installed, the HVAC Mode Enable Heating and Cooling Setpoints
can be offset by the Maximum Slide Offset Effect Setpoint. 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. High limit = 10ºF; Low limit = 0ºF; Default = 0ºF.
Optimal Start Soak Factor
If you are using the Optimal Start feature, you can force the calculated start
to time to activate. The Optimal Start Soak Factor is a multiplier that if set
to a number greater than 0 will be used as a multiplier for calculating the
Optimal Start Time for the HVAC unit. This multiplier is only applied if
the unit has been off for more than 24 hours. See the VCM-X Controller
Technical Guide for more detailed information regarding the Optimal
Start. This multiplier is only applied if you are using the VCM-X Internal
Schedule. High limit = 5.0; Low limit = 0.0; Default = 0.0.
CO2 Sensor Scaling
If you have installed a CO
2
sensor for Indoor Air Quality, enter the maxi-
mum reading the sensor can provide when the maximum input signal is
applied. High limit = 3000 ppm; Low limit = 0 ppm; Default =2000 ppm.
Trend Logging Interval
An Internal Trendlog is constantly updated at a rate equal to this value.
High limit = 60 minutes; Low limit = 1 minute; Default = 15 minutes.
Indoor Humidity Setpoint
On VAV or CAV confi gured units that are not using 100% Outdoor Air,
when the Indoor Relative Humidity percentage rises above the Indoor
Humidity Setpoint, the unit will start operating in Dehumidifi cation
Mode. If an Indoor Humidity Sensor is installed, the unit will reset the
Coil Suction Temperature Setpoint as needed to maintain this Indoor RH
Setpoint. This includes VAV, CAV and MUA applications. High limit =
100%; Low limit = 0%; Default = 50%.
Return Bypass Damper Factor
This setpoint is used when your HVAC unit is confi gured for Return Air
Bypass Damper control. The Return Air Bypass Damper Factor Setpoint
is a percentage value that is used to calculate the Return Air Damper posi-
tion in relation to the Return Air Bypass Damper position. This provides a
method for adjusting the airfl ow through the Return Air Bypass Damper.
Increasing this percentage increases the airfl ow through the Return Air
Bypass Damper by causing the Return Air Damper to move further towards
its closed position in relation to the Return Air Bypass Damper moving
towards its open position.
Decreasing this percentage decreases the airfl ow through the Return Air
Bypass Damper by causing the Return Air Damper to move further towards
its open position in relation to the Return Air Bypass Damper moving to-
wards its closed position. High limit = 100%; Low limit = 0%; Default = 0%.
Head Pressure Setpoint (VCM-X Modular, VCM-X WSHP)
Enter the maximum head pressure setpoint for the Head Pressure Module.
High limit = 420 PSI; Low limit = 240 PSI; Default = 315 PSI.
Reheat Head Pressure (VCM-X Modular, VCM-X WSHP)
Enter the maximum head pressure setpoint for the Reheat Mode of opera-
tion. High limit = 400 PSI; Low limit = 250 PSI; Default = 400 PSI.
Space Sensor Offset
If the Space Temperature Sensor is reading incorrectly, you can use this
option to enter an offset temperature to adjust the Sensor’s Temperature.
Enter a positive Sensor Calibration value to raise the Space Temperature
Sensor reading and a negative value to lower the Sensor reading. High limit
= 100ºF; Low limit = -100ºF; Default = 0ºF.
Supply Sensor Offset
If the Supply Air Temperature Sensor is reading incorrectly, you can use this
option to enter an offset temperature to adjust the Sensor’s Temperature.
Enter a positive Sensor Calibration value to raise the Supply Air Tempera-
ture Sensor reading and a negative value to lower the Sensor reading. High
limit = 100ºF; Low limit = -100ºF; Default = 0ºF.
Return Sensor Offset
If the Return Air Temperature Sensor is reading incorrectly, you can use this
option to enter an offset temperature to adjust the Sensor’s Temperature.
Enter a positive Sensor Calibration value to raise the Return Air Temperature
Sensor reading and a negative value to lower the Sensor reading. High limit
= 100ºF; Low limit = -100ºF; Default = 0ºF.
Outdoor Sensor Offset
If the Outdoor Air Temperature Sensor is reading incorrectly, you can use
this option to enter an offset temperature to adjust the Sensor’s Temperature.
Enter a positive Sensor Calibration value to raise the Outdoor Air Tem-
perature Sensor reading and a negative value to lower the Sensor reading..
High limit = 100ºF; Low limit = -100ºF; Default = 0ºF.
Coil Temperature Offset
If the Coil Temperature reading needs to be adjusted, enter a positive value
to raise the Coil Temperature reading and a negative value to lower the Coil
Temperature reading. High limit = 30ºF; Low limit = -30ºF; Default = 0ºF.