Orion System PT-Link II BACnet2 - Manual (Page 50)

PT-Link II BACnet ® Technical Guide
PT-Link II Interface 50
Appendix G - SA Controller BACnet Parameters
BACnet Properties for SA Controller
Parameter Name Object Description Limits
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 Unoc-
cupied Mode, use
the default setting
of 30°F for these
setpoints.
0 30
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
Entering
Air Offset
Setpoint
EaTpOst AV: 238 If the Entering
Air Temperature
Sensor is reading
incorrectly, you
can use this option
to enter an offset
temperature to
adjust the Sensor’s
Temperature.
Entering
Water
Offset
Setpoint
EwTpOst AV: 239 If the Entering
Water Temperature
Sensor is reading
incorrectly, you
can use this option
to enter an offset
temperature to
adjust the
Sensor’s
Temperature.
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
Fan Start Up
Delay
FanDly BI: 25 Status that indicates
the fan is com-
manded to run, but
it is in the start up
delay mode.
BACnet Properties for SA Controller
Parameter Name Object Description
Bad Supply
Air Sensor
SaTpAlm BI: 2 Alarm that indicates a failure in
the supply air sensor.
Cooling
Enabled
ClEnbl BI: 6 Status that indicates
mechanical cooling is enabled.
Economizer
Enabled
EcoEnbl BI: 15 Status that indicates
the economizer is enabled.
Fan
Proving
Alarm
PofAlm BI: 26 Alarm that indicates a failure in
the fl ow of the VFD blower.
Heating
Enabled
HtEnbl BI: 30 Status that indicates that me-
chanical heating is enabled.
High
Supply Air
Temperature
Alarm
HiSaAlm BI: 33 The Supply Air has risen above
the Hi SAT Cutoff Setpoint.
Heating stages begin to
deactivate and the fan continues
to run.
Low Supply
Air
Temperature
Alarm
LoSaAlm BI: 37 The Supply Air has fallen below
the Hi SAT Cutoff Setpoint and
cooling stages will begin to
deactivate. If the unit is in
Economizer, Vent, or Heating
Mode the Supply Fan
will shut off.
MODGAS II
Connected
MdHt2Ins BI: 39 Status that indicates
the MODGAS II controller is
connected.
REHEAT II
Connected
Rt2Ins BI: 58 Status that indicates
the MHGRV
controllers is connected to the
system.
Mechanical
Cooling
Alarm
MchClAlm BI: 94 Compressor Relays are enabled
but the Supply Air Temperature
has not fallen 5°F w/in a user-
adjustable time period. This does
not indicate compressors are
active and will not
shut the unit down.
Mechanical
Heating
Alarm
MchHtAlm BI: 95 Heating Mode has been initiated
but the Supply Air Temperature
has not risen 5°F w/in a
user-adjustable time period.
This does not indicate heat
stages are active and will not
shut the unit down.
Dirty Filter
Detected
DrtFlAlm BI: 96 Alarm that indicates the fi lters
are dirty.
Control
Temperature
Cool Failure
CtrlTpCF BI: 108 This alarm is activated if the
control temperature does not
get within 5°F to the occupied
cooling setpoint in an hour in the
cooling mode. This alarm is not
used in 100% outside air units or
supply air control.
Revised 4/3/13