Carrier 33ZCVAVTRM Specifications download pdf (Page 75)

POSITION SINGLE ZONE — This variable displays whether

the individual zone positioning process has been enabled. If

this decision is forced to Enable, the Linkage Coordinator zone

controller will set all system zone dampers to their configured

Cool Maximum Positions and display the values in Zone

(1-32) Damper Position variables.

At this time, if any of the Zone (1-32) Damper Position

variables are forced, the zone will be repositioned to this new

maximum position. The forced position will be shown on the

Zone (1-32) Damper Position variable with a Supervisor force.

This Supervisor force will disappear and the damper’s current

position will display when the new damper position has been

broadcasted to the zone controller's Damper Reference point.

The Damper Reference point will display a Control force

which will remain until System Commissioning is disabled and

the Damper Position will go to the new desired position.

NOTE: If this zone controller is not the Linkage Coordinator,

enabling this variable will have no effect.

Position

Single Zone: Display Range Enable/Disable

Network Access Read/Write

ZONE (1-32) DAMPER POSITION — This variable displays

the current damper position of all system zones during system

commissioning. These values can be used to verify and change

configured maximum damper positions when All Zone

Dampers to Max is Enabled and verify and change configured

minimum damper positions when All Zone Dampers to Min

is Enabled. The user can also reposition individual zone’s

dampers when Position Single Zone is Enabled. Force this

value to the desired minimum or maximum damper position.

Zone (1-32)

Damper Position: Display Range 0 to 100%

Network Access Read/Write

BYPASS DAMPER POSITION — This variable displays

the bypass damper position.

Bypass

Damper Position: Display Range 0 to 100%

Network Access No

BYPASS PRESSURE SENSOR — This variable displays

the current value of the bypass static system pressure.

Bypass

Pressure Sensor: Display Range 0.00 to 2.00 in. wg

Network Access No

BYPASS PRESSURE SET POINT — This variable displays

the current Bypass Pressure set point. At any time in the system

commissioning process, the user can force the Bypass Pressure

set point. Typically the maximum unit rated duct velocity pres-

sure would be entered in this decision prior to enabling All Zone

Dampers to Maximum. When this value is forced, the new set

point is written to the Pressure Set Point Table in the bypass

controller over the communication network. The bypass con-

troller then controls to the new bypass pressure set point.

Bypass Pressure

Set Point: Display Range 0.00 to 2.00 in. wg

Network Access Read/Write

Zone Status Maintenance Table — The Zone Status

Maintenance Table (ZCOMAINT) displays the communica-

tion status of the air source, the optional bypass controller, and

each of the zone controllers in the 3V™ control system. This

table is only active in the Linkage Coordinator zone controller.

See Table 20.

AIR SOURCE STATUS — This variable displays the com-

munication status of the air source.

NOTE: If the zone controller is not a Linkage Coordinator, the

status will be NONE.

Air Source

Status: Display Range Com OK, None, Failed

BYPASS COMM STATUS — This variable displays the

communication status of the bypass damper controller.

NOTE: If the zone controller is not a Linkage Coordinator, the

status will be NONE.

Bypass Com

Status: Display Range Com OK, None, Failed

ZONE (1-32) COMM STATUS — This variable displays the

communication status of each zone controller.

NOTE: If the zone controller is not a Linkage Coordinator, the

status will be NONE.

Zone (1-32)

Comm Status: Display Range Com OK, None, Failed

Zone Device Maintenance Table — The Zone Device

Maintenance Table (ZDEVMAIN) displays the type of device

found at each address in the 3V control system beginning with the

device found at the address that is one element higher than the

Linkage Coordinator zone controller, decrementing by 1 until the

configured number of zones have been checked. This table is only

active in the Linkage Coordinator zone controller. See Table 21.

BYPASS DEVICE TYPE — This variable displays the type

of device found at the location where there is typically a bypass

controller. This location is one address higher than the Linkage

Coordinator zone controller. Valid displays for this variable are:

• None = No device present/com. fail/ pending

• Master = Linkage Coordinator found (typically found at

ZD_DEV01 only)

• Bypass = bypass controller

• PDZone = pressure dependent zone

• PIZone = pressure independent zone

• Other = other Carrier Network device found

NOTE: If this zone controller is not a Linkage Coordinator, the

value of this display will be None.

ZONE (1-32) DEVICE TYPE — This variable displays the

type of device found when the master scans zones 1 through n

where n is the number of zones (1-32) configured in the

Number of Zones decision in the Linkage Configuration Table.

The zones are scanned in descending order, beginning with the

Linkage Coordinator itself at zone n.

Valid displays for this variable are:

• None = No device present/com. fail/pending

• Master = Linkage Coordinator found (typically found at

ZD_DEV01 only)

• Bypass = bypass controller

• PDZone = pressure dependent zone

• PIZone = pressure independent zone

• Other = other Carrier Network device found

NOTE: If this zone controller is not a Linkage Coordinator, the

value of this display will be None.

Zone Maintenance Table — The Zone Maintenance

Table (ZNMAINT) displays the status of the air source (heating,

cooling, ventilation) and the reference values that the zone is

using for control. This table also displays whether this zone is the

Linkage Coordinator, whether there is an override in effect, and

whether there are any loadshed conditions currently in effect.

See Table 22.

OCCUPIED — This variable displays the current occupied

mode for the zone controller. If the zone controller is following its

own local schedule, this is the result of the local schedule status. If

the zone controller is configured to follow a global schedule, this

displays the mode last received from a global schedule broadcast.

Occupied: Display Range No/Yes

Network Access Read Only

LINKAGE ZONE — This variable displays if air source link-

age is in effect.

Linkage Zone: Display Range No/Yes

Network Access Read Only

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Carrier 33ZCVAVTRM Specifications Page 75

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