FBVi-2U4-4T |
Control Sequence
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Subject to change without notice
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89
M
AN
01
48
re
v 5
SCHEDULING
There are two options available to schedule the box. Writing a value to
occCmd (A269)
through a network
connection will set the box Occupied, Unoccupied, or Standby. If a network connection is not available,
the
FBVi
can operate on a stand-alone internal schedule.
To select the internal schedule, set
intScheduleEnb (D168)
to
TRUE
. This will allow the internal BACnet
schedule to command the unit Occupied or Unoccupied.
ALARMS
LOW AIRFLOW ALARM
If the
activeAirflow (A250)
is 30% below the
activeFlowSetpoint (A236)
for 5 minutes the
lowAirFlowAlarm (D214)
will be set to
TRUE
.
LOW DISCHARGE AIR TEMPERATURE ALARM
If the unit is configured for a discharge air temperature sensor and the discharge air is more than 15deg
below the discharge air temperature setpoint, the
lowDischAirTempAlarm (D217)
will be set to
TRUE
.
ZONE AIR TEMPERATURE FAILURE
If the zone air temperature as detected on UI1 is below 20 or above 130 deg F,
UI1_ZoneTemperatureFailure (D124)
will be set to
TRUE.
DISCHARGE AIR TEMPERATURE FAILURE
If the discharge air temperature is below 20 or above 130 deg F,
UI3_DischargeTempFailure (D208)
will be
set to
TRUE.
HIGH/LOW ZONE AIR TEMPERATURE ALARM
If the
activeZoneTemp (A191)
is 2 deg above the
activeCoolStpt (A187)
for more than 10 minutes,
highZoneTempAlarm (D225)
will be set to
TRUE.
If the
activeZoneTemp (A191)
is 2 deg below the
activeHeatStpt (A188)
for more than 10 minutes,
lowZoneTempAlarm (D196)
will be set to
TRUE.
AIRFLOW CALIBRATION ALARM
If the
activeAirflow (A250)
is 10% above the
maxCoolFlowStpt (A228)
for more than 10 minutes,
airflowCalibrationAlarm (D219)
will be set to
TRUE.
LEAKING DAMPER ALARM
If the
damperCmd (A261)
is at 0% and the
activeAirflow (A250)
is above the
minHeatFlowStpt (A230)
for
more than 10 minutes,
leakingDamperAlarm (D221)
will be set to
TRUE.
LEAKING VALVE ALARM
If the stage 1 and 2 analog heating signals are at 0% and the discharge air temp is above 70 deg F,
leakingValveAlarm (D223)
will be set to
TRUE.
FAN ALARM
If a fan status is configured, and it does not see a fan status for 30 seconds when the fan is commanded
ON,
fanAlarm (D127)
will be set to
TRUE.
HIGH
CO₂
ALARM
If the
CO₂
demand is over 50% for more than 10 minutes,
highCO2Alarm (D194)
will be set to
TRUE.
Содержание FBVi-2U4-4T
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