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INDOOR AIR QUALITY
This alarm indicates the space CO
figuration Occupied High CO
alarm will be inhibited until the RTU has been running for 2-min-
utes to allow for system stabilization after startup.
SUPPLY FAN RUNTIME
This alarm indicates the accumulated runtime exceeds the unit
configuration Supply Fan Service Alarm Timer value (when not
set to 0). This alarm is most commonly used to indicate an equip-
ment maintenance interval is due. The supply fan runtime accu-
mulator may be reset by setting the maintenance point Reset Sup-
ply Fan Runtime Alarm to Clear, and then back to Run – acknowl-
edging each selection by clicking the OK button when it appears.
Setting unit configuration Supply Fan Service Timer value to 0
disables the supply fan runtime alarm function.
COMPRESSOR 1 RUNTIME
This alarm indicates the accumulated runtime exceeds the unit
configuration Compressor 1 Service Alarm Timer value (when not
set to 0). This alarm is most commonly used to indicate an equip-
ment maintenance interval is due. The Compressor 1 Runtime ac-
cumulator may be reset by setting the maintenance point Reset
Comp 1 Runtime Alarm to Clear, and then back to Run – ac-
knowledging each selection by clicking the OK button when it ap-
pears. Setting unit configuration Compressor 1 Service Timer val-
ue to 0 disables the Compressor 1 Runtime alarm function.
COMPRESSOR 2 RUNTIME
This alarm indicates the accumulated runtime exceeds the unit
configuration Compressor 2 Service Alarm Timer value (when not
set to 0). This alarm is most commonly used to indicate an equip-
ment maintenance interval is due. The Compressor 2 runtime ac-
cumulator may be reset by setting the maintenance point Reset
Comp 2 Runtime Alarm to Clear, and then back to Run – ac-
knowledging each selection by clicking the OK button when it ap-
pears. Setting unit configuration Compressor 2 Service Timer val-
ue to 0 disables the Compressor 2 runtime alarm function. Note
that this function is unavailable if the service configuration Com-
pressor Stages value is not set to Two Stages.
HEAT 1 RUNTIME
The VAV-RTU Open generates this alarm when the accumulated
runtime exceeds the Unit Configuration > Heat 1 Service Alarm
Timer value (when not set to 0). This alarm is most commonly
used to indicate an equipment maintenance interval is due. The
Heat 1 Runtime accumulator may be reset by setting the
Maintenance > Reset Heat 1 Runtime Alarm to Clear, and then
back to Run – acknowledging each selection by clicking the OK
button when it appears. Setting Unit Configuration > Heat 1 Ser-
vice Timer value to 0 disables the Heat 1 Runtime alarm function.
HEAT 2 RUNTIME
The VAV-RTU Open generates this alarm when the accumulated
runtime exceeds the Unit Configuration > Heat 2 Service Alarm
Timer value (when not set to 0). This alarm is most commonly
used to indicate an equipment maintenance interval is due. The
Heat 2 Runtime accumulator may be reset by setting the Mainte-
nance > Reset Heat 2 Runtime Alarm to Clear, and then back to
Run – acknowledging each selection by clicking the OK button
when it appears. Setting Unit Configuration > Heat 2 Service Tim-
er value to 0 disables the Heat 2 Runtime alarm function. Note that
this function is unavailable if the Service Configuration > Heat
Stages value is not set to Two Stages.
FILTER
This alarm indicates the accumulated runtime exceeds the unit
configuration Filter Service Alarm Timer value (when not set to
0). This alarm is most commonly used to indicate a filter replace-
ment is due. Reset the filter service runtime accumulator by setting
the maintenance point Reset Filter Runtime Alarm to On, back to
level exceeds the alarm con-
2
Alarm Limit for 1-minute. This
2
Off, and clicking the OK button after each setting. Setting unit
configuration Filter Service Alarm Timer value to 0 disables the
filter service alarm function.
AIRSIDE LINKAGE ALARM
This alarm indicates that VAV-RTU Open was connected to a
zoned system using Airside Linkage and it lost communications
with its linkage master or it is receiving data from multiple
masters.
Performance
CURRENT PERFORMANCE DATA
The VAV-RTU Open collects performance data during operation.
The data can be used to monitor the operation of the unit over
time.
EQUIPMENT RUNTIME
The RTU monitors the supply fan and records the amount of time
the unit has been operating. This value will continue to accumu-
late runtime until Performance Data has been changed to Reset or
will also automatically reset every 24 hours at midnight if Save
Performance Data Daily is set to Enable.
ECONOMIZER UTILIZATION
The amount of time the equipment has operated in the economizer
mode as a percentage of the equipment runtime above. This value
will continue to accumulate runtime until Performance Data has
been changed to Reset or will automatically reset every 24 hours
at midnight if Save Performance Data Daily is set to Enable.
DCV UTILIZATION
The amount of time the equipment has provided Demand
Controlled Ventilation as a percentage of the equipment runtime
above. This value will continue to accumulate runtime until
Performance Data has been changed to Reset or will automatically
reset every 24 hours at midnight if Save Performance Data Daily
is set to Enable.
UNOCC FREE COOL UTILIZATION
The amount of time the equipment has provided Free Cooling
while unoccupied as a percentage of the equipment runtime
above. This value will continue to accumulate runtime until
Performance Data has been changed to Reset or will automatically
reset every 24 hours at midnight if Save Performance Data Daily
is set to Enable.
PART LOAD COOLING UTILIZATION
The amount of time the equipment has operated in the cooling
mode but at less than 100% full cooling capacity as a percentage
of the equipment runtime above. This value will continue to accu-
mulate runtime until Performance Data has been changed to Reset
or will automatically reset every 24 hours at midnight if Save Per-
formance Data Daily is set to Enable.
FULL LOAD COOLING UTILIZATION
The amount of time the equipment has operated in the cooling
mode at 100% full cooling capacity as a percentage of the equip-
ment runtime above. This value will continue to accumulate run-
time until Performance Data has been changed to Reset or will au-
tomatically reset every 24 hours at midnight if Save Performance
Data Daily is set to Enable.
HEATING UTILIZATION
The amount of time the equipment has operated in the heating
mode as a percentage of the equipment runtime above. This value
will continue to accumulate runtime until Performance Data has
been changed to Reset or will automatically reset every 24 hours
at midnight if Save Performance Data Daily is set to Enable.
33
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