Orion System System Manager TS II In-House - Manual (Page 28)

VCM & VCM-X Controllers
SMTS II Technical Guide 28
Has Building Pressure Mod Control
Select this item if your system needs Modulating Building Pressure Con-
trol. Modulating building pressure control is used for a VFD exhaust fan
or a modulating exhaust fan damper actuator for direct acting building
pressure control. Modulating building pressure control is also used for a
modulating outdoor air damper actuator or a supply fan VFD for reverse
acting building pressure control.
Building Pressure Reverse Acting
Select this item if your system needs Reverse Acting Building Pressure
control. On a drop in Building Pressure below the Building Static Pres-
sure Setpoint the Outdoor Air Damper will modulate open to increase
pressure or the supply Fan VFD will ramp-up.
Building Pr. Output is 2-10 VDC
Select this item if your application needs a 2-10 VDC Building Pressure
Output Signal as required by the device you are using to control the pres-
sure. Do not select this item if your application needs a 0-10 VDC signal.
Use Heat During Re-Heat
Select this item if your application needs to use unit heat during Dehumidi-
fi cation to supplement Reheat. If Reheat is not available, this selection
will allow the unit heat to operate in place of Reheat.
Outdoor Air Damper Control Based on Airfl ow CFM
Select this item to modulate the outdoor damper based on airfl ow setpoint.
Head Pressure Module Installed ( VCM-X Modular, VCM-X
WSHP)
Select this item if you have a Head Pressure Module installed on your
system.
Figure 39: VCM-X Confi guration Screen 5
VCM & VCM-X Confi guration
Has Modulating Cooling
Select this item if the HVAC unit is controlling Modulating Cooling
through use of a modulating chilled water valve or a digital compressor.
Modulating Cooling is Reverse Acting
Select this item if Modulating Cooling requires 0 VDC to open and 10
VDC to close. You cannot use a reverse acting signal your application
is using a digital compressor.
Has Modulating Heating
Select this item if the HVAC unit is controlling Modulating Heating
through use of a modulating hot water valve, modulating steam valve,
or a SCR controlled electric heater.
Modulating Heating is Reverse Acting
Select this item if Modulating Heating requires 0 VDC to open and 10
VDC to close.
Has Return Bypass Control
Select this item if your HVAC unit requires Return Air Bypass Control.
Full Digital Module Installed, Dual Digital Module Installed,
or using VCM-X WSHP Controller (VCM-X Modular or VCM-X
WSHP)
Select this item if you have multiple Digital Scroll Compressors installed
on your system.
Figure 40: VCM-X Confi guration Screen 6