PT-Link II N2-3
®
Technical Guide
PT-Link II N2-3 Interface
40
Appendix E - VCM N2 Parameters
N2 Parameters for the VCM Controller
Parameter
Name
Object
Description
Limits
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.
Control
Temperature
Heat Failure
CtrlTpHF
BI: 109
This alarm is
activated if the
control temperature
does not get within
5°F to the occupied
heating setpoint
in an hour in the
heating mode. This
alarm is not used
in 100% outside air
units or supply air
control.
Dehu-
midifi cation
Demand
DehmDmnd
BI: 113
Status that indicates
a demand for
dehumidifi cation.
Outdoor Air
Temperature
Lost
OaTpAlm
BI: 117
Alarm that
indicates a failure
in the outdoor air
temperature.
Smoke
Detector
Alarm
SmokeAlm
BI: 119
Alarm that indicates
the Smoke sensor
has been activated.
Space
Temperature
Sensor Lost
SpcTpAlm
BI: 101
Alarm that indicates
a failure in the
space temperature
sensor.
On Board
Relay 1
OnRly1
BI: 127
Current status of
relay 1.
On Board
Relay 2
OnRly2
BI: 128
Current status of
relay 2.
On Board
Relay 3
OnRly3
BI: 129
Current status of
relay 3.
On Board
Relay 4
OnRly4
BI: 130
Current status of
relay 4.
On Board
Relay 5
OnRly5
BI: 131
Current status of
relay 5.
Expansion
Relay 1
ExRly1
BI: 133
Current status of
relay 6.
Expansion
Relay 2
ExRly2
BI: 134
Current status of
relay 7.
Expansion
Relay 3
ExRly3
BI: 135
Current status of
relay 8.
N2 Parameters for the VCM Controller
Parameter
Name
Object
Description
Limits
High
Supply Air
Temperature
Alarm
HiSaAlm
BI: 33
The Supply Air
has risen above
the Hi SAT Cutoff
Setpoint. Heating
stages begin to de-
activate 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 deacti-
vate. 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.
Proof of
Flow
Confi gured
PofCfg
BI: 57
Status that indicates
the proof of fl ow
function has been
confi gured.
REHEAT II
Connected
Rt2Ins
BI: 58
Status that indicates
the MHGRV
controllers is
connected to the
system.
Warm Up
Mode
Active
WmupDmnd
BI: 90
Status that indicates
the control is in the
Warm-up mode.
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.
