Carrier 3V VVT 33ZCVVTZC-01, Installation, Start-Up And Configuration Instructions

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Table 23 — Zone Commissioning Maintenance Table
COMMISSIONING MODE — This variable is used to put
the zone controller into the commissioning mode. Force this
point to enable. The zone controller will be ready to accept a
command to perform the tests and functions on this screen.
NOTE: Commissioning mode will automatically be dis-
abled after one hour.
Commissioning
Mode:
Display Range Disable/Enable
Default Value Disable
Network Access Read /Write
DAMPER ACTUATOR CALIBRATION — The Damper
Actuator calibration is the first calibration which should be per-
formed on a newly installed actuator. The zone controller will
command the actuator to close and read the feedback potenti-
ometer to determine the zero position of the damper. It will
then command the damper to fully open. The zone controller
will read the potentiometer to determine the maximum open
position. Damper positions from closed to maximum open will
be scaled to read 0 to 100% for the damper position.
The entire calibration procedure can take up to 3 minutes. If
the damper fails the test, the Auto-Calibration point will indi-
cate an Alarm.
Damper Actuator
Calibration:
Display Range Disable/Enable
Default Value Disable
Network Access Read /Write
FAN OVERRIDE — This variable can be used to test the fan
on series and parallel fan powered terminals. Enabling this
point will cause the terminal fan to run until this point is dis-
abled or the commissioning mode is ended.
Fan Override:
Display Range Disable/Enable
Default Value Disable
Network Access Read /Write
HEATING OVERRIDE — This variable can be used to test
the heat outputs. Enabling this variable will cause the heat to be
modulated or staged to full heat until this point is disabled or
the force released. Ducted reheat operation will be controlled
so as not to exceed the configured maximum duct temperature.
The supply-air temperature is included on this screen to verify
that the heat is operating.
Heating Override: Display Range
Disable/Enable
Default Value Disable
Network Access Read /Write
DAMPER POSITION — This variable displays the current
damper position. During CFM Balancing, this variable is used
to display the position of the damper. This value can be used to
see if the damper is fully open and the system air is sufficient.
Damper
Position:
Display Units % (open)
Display Range 0 to 100
Default Value 100
Network Access Read Only
SUPPLY-AIR TEMPERATURE — This variable displays
the supply-air temperature for ease of verifying the heat opera-
tion during the heat test.
Supply-Air
Temperature:
Display Units F (C)
Display Range –40.0 to 245.0
Default Value 0.0
Network Access Read /Write
DAMPER CALIBRATION STATUS — This variable will
display “Normal” if the actuator calibration is successful. If
damper or transducer calibration was not successful, this point
will display “Alarm” and the zone controller will broadcast the
appropriate alarm (if configured to transmit alarms).
Damper
Calibration Status: Display Range
Normal/Alarm
Default Value Normal
Network Access Read Only
OPERATION
System Mode Selection —
The Linkage Coordinator
will determine whether the system as a whole requires heating
or cooling and whether the air source will operate in occupied
or unoccupied mode. This will be determined by obtaining the
heating or cooling needs of each zone and adjusting for the
duct size of the zones and calculating an average cool demand
(ACD) and average heat demand (AHD) as well as its
occupancy mode. The Linkage Coordinator will be the highest
addressed zone controller of all zones that are served by
the same air source equipment and it will obtain this informa-
tion when it scans all its associated zones on approximately
1-minute intervals.
When using the Occupied Heating Set Point (OHS) or
Occupied Cooling Set Point (OCS) the actual configured val-
ues will be used including T56 biased offset (if present) as the
zone operating set points. The T56 bias is not applied to Unoc-
cupied Heating and Cooling Set Points.
Temperature demand will be used to indicate individual
zone demand and for accumulating the total weighted average
demand for heating and for cooling. If the space temperature
(SPT) is greater than the OCS then the zone demand is cooling
and the space temperature will be used in the ACD. If the SPT
is less than the OHS than the zone demand will be heating and
the space temperature will be used in the AHD. If the SPT is
between the OHS and OCS, the zone will be considered to
have no demand and will not be included in determining the
system mode. Only those zones with a valid SPT of greater
than –40 F, less than 245 F, and a configured damper size
greater than 0 will be included in the calculations.
If any zone is occupied then the Linkage Coordinator will
calculate the ACD and AHD using only the occupied zones. If
no zones are occupied will then the Linkage Coordinator will
calculate the ACD and AHD including all zones in the calcula-
tion. The zone controller then display the ACD, the Max Cool
Demand and Max Cool Demand Zone, the AHD, the Max
Heat Demand Max Cool Demand Zone, the Reference Zone
Demand and Zone Identification for each demand in the
Master Zone maintenance table.
DESCRIPTION VALUE UNITS STATUS FORCE NAME
Commissioning Mode Disable CMODE
Damper Cal Disable CALIBRAT
Fan Override Disable FANOVER
Heating Override Disable HEATOVER
Damper Position 10 %OPEN DMPPOS
Supply Air Temperature 67.1 dF SAT
Damper Cal Status Normal CAL_ALRM
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