Orion System PT-Link II BACnet2 - Manual (Page 54)

PT-Link II BACnet ® Technical Guide
PT-Link II Interface 54
BACnet Properties for the VCM Controller
Parameter Name Object Description Limits
Schedule
Force
SchdFrc AV: 66 0 = Auto/
Unoccupied Mode
1 = Forced On
2 = Forced Off
0 2
Space
Sensor
Offset
SpcTpOst AV: 71 If the Space
Temperature
Sensor is reading
incorrectly, you can
use this option to
enter an offset
temperature to
adjust the Sensor’s
Temperature.
-100 100
SAT/Reset
Source
Cooling
Setpoint
SaClSt AV: 77 Supply Air setpoint
or Reset Source tar-
get temperature in
Cooling Mode.
40 80
SAT/Reset
Source
Heating
Setpoint
SaHtSt AV: 78 Supply Air setpoint
or Reset Source tar-
get temperature in
Heating Mode.
40 200
Supply
Air Sensor
Offset
SaTpOst AV: 80 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.
-100 100
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 Controller
Parameter Name Object Description Limits
Dewpoint
Setpoint
DptSt AV: 13 If the outdoor
dewpoint rises
above this setpoint,
the unit will
activate the
Dehumidifi cation
Demand.
35 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
Indoor
Humidity
Setpoint
InRhSt AV: 120 If the indoor
humidity rises
above this setpoint,
the unit will
activate the
Dehumidifi cation
Demand.
0 100
Warm Up
Setpoint
WmupSt AV: 91 In a VAV
application, upon
entering the
occupied 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 out-
door temperature or
wetbulb falls below
this setpoint.
0 80
Bad Supply
Air Sensor
SaTpAlm BI: 2 Alarm that
indicates a failure
in the
supply air sensor.
CO
2
Sensor
Installed
CO2Cfg BI: 3 Status that
indicates the CO
2
function has been
confi gured.
Cooling
Demand
ClDmnd BI: 5 Status that
indicates a demand
for cooling.
Cooling
Enabled ClEnbl BI: 6 Status that indicates
mechanical cooling
is enabled.
Economizer
Enabled
EcoEnbl BI: 15 Status that indicates
the economizer is
enabled.
Appendix H - VCM BACnet Parameters