Orion System PT-Link II BACnet3 - Manual (Page 50)

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Zone
7. PARAMETER TABLES
PT-Link II BACnet3 Interface 50
7.5 VCM-X BACnet Parameters
BACnet Properties for the VCM-X Controller
Parameter Name Object Description Limits
Warm Up
Setpoint
WmupSt AV: 91 In a VAV
application, upon
entering the oc-
cupied mode, the
Warm-up Demand
will be activated
if the return air
temperature falls
one degree below
this setpoint.
50 90
Wet Bulb
Setpoint
WtblSt AV: 92 The economizer is
enabled if the
outdoor tempera-
ture or wetbulb falls
below this setpoint.
0 80
Coil
Temperature
Setpoint
CoilTpSt AV: 107 This is the coil
suction temperature
target during
dehumidifi cation
mode. Produces
dewpoint in the
supply air
approximately 10°F
above this setpoint.
35 70
Relief
Pressure
Setpoint
RfPrSt AV: 118 This is the target
building pressure
to be maintained
by the VFD Relief
signal.
-0.2 0.2
Indoor
Humidity
Setpoint
InRhSt AV: 120 If the indoor
humidity rises
above this setpoint,
the unit will acti-
vate the Dehumidi-
fi cation Demand.
0 100
Unoccupied
Cooling
Offset
UnClOst AV: 124 During the
Unoccupied Mode
of Operation, this
Setpoint spreads the
Occupied Cooling
Setpoint out by
a user adjustable
amount. If you do
not want Cooling to
operate during the
Unoccupied Mode,
use the default
setting of 30°F for
these setpoints.
0 30
Unoccupied
Heating
Offset
UnHtOst AV: 125 During the
Unoccupied Mode
of Operation, this
Setpoint spreads the
Occupied Heating
Setpoint out by
a user adjustable
amount. If you do
not want Heating to
operate during the
Unoccupied Mode,
use the default
setting of 30°F for
these setpoints.
0 30
BACnet Properties for the VCM-X Controller
Parameter Name Object Description Limits
CO
2
Setpoint
CO2St AV: 149 When the CO
2
level rises above
the CO
2
Protection
Limit Max Level,
the Economizer’s
Minimum Position
will begin to reset
open proportionally
between the CO
2
Protection Limit
Max Level Setpoint
and the Reset
Range Setpoint.
0 3000
Minimum
Outside Air
Setpoint
MinEcoSt AV: 151 This is the
minimum position
of the economizer
in the occupied
modes.
1 100
Static
Pressure
Setpoint
DuctPrSt AV: 152 This is the target
duct pressure to be
maintained by the
VFD blower signal.
0.01 3
Preheater
Setpoint
PreHtSp AV: 196 Low Outside Air
Ambient
Protection Setpoint
0 100
Outdoor
Air CFM
Setpoint
OACfmSt AV: 203 Minimum desired
Outdoor Air CFM.
0.10
K
200 K
Outdoor Air
CFM Reset
Limit
OACfmRs AV: 204 Maximum desired
Outdoor Air CFM
when CO
2
reaches
its reset limit.
0.10
K
200 K
Supply Air
Cool High
Reset
SaClRt AV: 324 High Supply Air
Cooling Reset
Limit
40 150
Supply Air
Heat High
Reset
SaHtRt AV: 325 High Supply Air
Heating Reset Limit
40 150
Cooling
Low Reset
Source
ClLoRt AV: 326 Low Cool Reset
Source Setpoint
1 150
Cooling
High Reset
Source
ClHiRt AV: 327 High Cool Reset
Source Setpoint
1 150
Heating
Low Reset
Source
HtLoRt AV: 328 Low Heat Reset
Source Setpoint
1 150
Heating
High Reset
Source
HtHiRt AV: 329 High Heat Reset
Source Setpoint
1 150