Orion Control Systems AAON VCCX2 User Manual

126
VCCX2 Controller Technical Guide
BACnet
®
Properties for the VCCX2 Controller
Parameter Object Description
Limits
Dehum Mode
Head
Pressure
Setpoint
AV: 64 Head Pressure Setpoint in
the Dehumidication Mode.
250 450
Superheat
Setpoint
AV: 65 Superheat Setpoint. 1°F
1°C
30°F
17°C
Maximum
Outdoor CFM
Requirement
AV: 66 Maximum Outdoor Airow
CFM Setpoint in High CO
2
.
.10K 200K
Schedule
Force
AV: 67 0 = Auto (uses controller’s
schedule)
1 = Forced Occupied
2 = Forced Unoccupied
0 2
Hvac Mode
Override
AV: 68 Overrides normal controller
operation in order to force
the unit into this desired
mode. Conguring for
“Auto” will restore normal
unit control of the mode of
operation.
0=Auto
1=Vent
2=Cool
3=Heat
4=Vent
Dehum.
5=Cool
Dehum.
6=Heat
Dehum.
Fan VFD
Override
AV: 69 Override to force the VFD
to this percentage speed.
Conguring “Auto” will
restore normal unit control
of the VFD speed.
0% 100%
Auto=65535
Outdoor Air
Damper
Override
AV: 70 Overrides all other
Outdoor Air Damper
position commands so as to
maintain this xed position.
Conguring for “Auto” will
restore normal unit control
of the Outdoor Air Damper/
Economizer operation.
0% 100%
Auto=65535
NOTE: If
Economizer is
enabled and a value
less than 100% is
written, compressors
will disable.
See Economizer
Override via
BACnet
®
section
in the Economizer
area of the Sequence
of Operations
for additional
information.
Supply
Setpoint
Override
AV: 71 This will override whatever
setpoint the Supply Air
Temperature is currently
being controlled to.
0°F
-17.7°C
Zero
= no
override.
200°F
93.3°C
Space
Temperature
Value
AV: 72 If the controller is
congured for this
operation, the user can write
a Space Sensor value.
0°F
17.7°C
120°F
48.8°C
BACnet
®
Properties for the VCCX2 Controller
Parameter Object Description
Limits
Space
Humidity
Value
AV: 73 If the controller is
congured for this
operation, the user can write
a Space Humidity Sensor
value.
0 100
Indoor RH
Calibration
Oset
AV: 74 If the Space Humidity
Sensor is reading
incorrectly, you can use this
option to enter an oset
humidity to adjust the
Sensor’s Humidity.
-100% 100%
Relief Fan
VFD
AV: 75 Override to force the VFD
to this percentage speed.
Conguring “Auto” will
restore normal unit control
of the VFD speed.
0% 100%
Auto=65535
Relief
Pressure
Value
AV: 76 If the controller is
congured for this
operation, the user can write
Building Pressure Sensor
value.
-.5 .5
Carbon
Dioxide
Value
AV: 77 If the controller is
congured for this
operation, the user can write
a CO
2
Sensor value.
0 3000
Outdoor Air
Temperature
Value
AV: 78 If the controller is
congured for this
operation, the user can write
an Outdoor Sensor value.
-40°F
-40°C
150°F
65.5°C
Outdoor Air
Humidity
Value
AV: 79 If the controller is
congured for this
operation, the user can write
an Outdoor
Humidity Sensor value.
0 100
High Level
Enthalpy
(Reserved)
AV: 80 Reserved 10 50
Low Level
Enthalpy
(Reserved)
AV: 81 Reserved 10 50
Max Plenum
Pressure
Setpoint
Reset Limit
AV: 82 Reserved 0.1 1.4
Min Plenum
Pressure
Setpoint
Reset Limit
AV: 83 Reserved 0.1 1.4
Enthalpy
Enable
Setpoint
AV: 84 If congured for
Comparative Enthalpy
Economizer Control, the
OA Enthalpy must be
below this setpoint by the
Enthalpy Enable Deadband
before the OA/RA Enthalpy
comparison will be utilized
to enable the Economizer.
25
BTU/lb.
35
BTU/lb.
APPENDIX C
-
VCCX2 BACnet
®
VCCX2 BACnet
®
Parameters

Orion Control Systems AAON VCCX2 Specifications

General

Brand	Orion Control Systems
Model	AAON VCCX2
Category	Controller
Language	English