Carrier 33ZCVAVTRM Specifications download pdf (Page 63)

SYSTEM BYPASS EXISTS — This decision is used to tell

the linkage coordinator that an optional bypass controller does

or does not exist in this system. If this decision is set to Ye s,the

linkage coordinator will attempt to communicate with a bypass

controller whose address must be one higher than the linkage

coordinator. If this decision is set to No, the linkage coordinator

will not attempt to communicate with a bypass controller.

System

Bypass Exists: Range Yes/No

Default Value Yes

AST MODE VERIFICATION — This decision is used to tell

the linkage coordinator whether or not to qualify the mode sent

to it by comparing the air source supply air temperature value

to space temperature to ensure the air source is discharging an

appropriate supply air temperature for the current heat/cool

mode. If heating is required but the supply air temperature is

too cool for heating, the zone controller will act as if the air

source mode is cool rather than heat.

AST Mode

Verification: Range Yes/No

Default Value No

AST SENSOR LOCATION — This decision is used to spec-

ify where the air source supply air temperature sensor is

located. It may be located at the air source, at the bypass con-

troller, or there may be an optional primary air temperature

sensor (PAT) installed in the primary air duct.

AST Sensor

Location: Units none

Range 0 = air source,

1=localPAT,

2 = bypass

Default Value 0

CCN LINKAGE DATA — A zone controller configured as a

linkage coordinator has the ability to poll its linked zones and

collect the high, low or average value of any variable within its

linked zones. Once the high, low or average is determined, the

linkage coordinator can then transfer that value to a configured

bus number, element number and point name. Typically this

feature is used to determine a system’s highest indoor air qual-

ity reading.

In order to utilize this feature the CCN Variable Name being

collected from the linked zones must be supplied. The data

transfer rate must be specified and whether the high, low,

or average value is being determined. After the value has been

determined, a valid point name and communication bus

address to transfer the value to must be entered.

CCN Variable

Name: Units ASCII (8 Characters)

Range A-Z, 0-9

Default Value (blank)

CCN Function

Config: Units none

Range 0 = none, 1 = average,

2=low,3=high

Default Value 3

Data Transfer

Rate: Units minutes

Range 1-15

Default Value 10

CCN Output

Point: Units ASCII (8 Characters)

Range A-Z, 0-9

Default Value (blank)

Destination Bus

Number: Units none

Range 0-239

Default Value 0

Destination

Element Number: Units none

Range 0-239 (0 = disabled)

Default Value 0

TEMP SENSOR GROUPING — Each zone controller has

the capability to broadcast the associated space temperature

sensor’s data or listen to another controller’s sensor data over

the network. All controllers sharing the same sensor must be

installed on the same communication bus.

There are three configuration decisions that must be config-

ured in order to share sensors. The Temp Sensor Mode is used

to specify if a controller will use its own local sensor, broadcast

its local sensor, or listen to another controller’s sensor broad-

cast. The Listen Sensor Config is used to specify if the control-

ler is sharing the space temperature information only or the

space temperature and temperature offset slidebar information.

The Broadcast Element Number decision is used to specify

which controller number a zone will listen for when configured

to receive another controller’s broadcast.

Temp Sensor

Mode: Units none

Range 1 = Local Sensor,

2=Broadcast,3=Listen

Default Value 1

Listen Sensor

Config: Units none

Range 1 = SPT, 2 = SPT and

offset

Default Value 1

Broadcast

Element Number: Units None

Range 1-239

Default Value 1

Language Configuration Table — The Language

Configuration table (LNGCONF) is used to select the display

language that will be seen on all user interfaces for this control-

ler. By default, the zone controller displays information in

English. To change to a second language display, set this

decision to No, download this table and then upload the zone

controller to see the factory-loaded second language. If a sec-

ond language is not available in this module, this decision will

be disregarded and information will continue to be displayed in

English.

English

Language: Range No/Yes

Default Value Yes

Master (Linkage Coordinator) Service Configu-

ration Table —

The Master (Linkage Coordinator) Service

Configuration Table (MASTER) contains decisions used by

the linkage coordinator zone controller to determine the system

demand mode (heat/cool/vent). See Table 10.

COOL START AVERAGE DEMAND — This decision is

used to configure the minimum average cooling demand that

must be met before the system will start in cooling mode if no

mode is currently active.

NOTE: If there is also an average heating demand, and it is

also greater than its configured minimum average heating

demand (Heat Start Avg. Demand), then the mode with the

greater demand will be selected. If both heating and cooling

average demand are exactly the same then the mode with the

greatest individual zone demand will determine the starting

system mode.

Cool Start

Average Demand: Units delta F (C)

Range 0.5 to 5.0

Default Value 0.7

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Carrier 33ZCVAVTRM Specifications Page 63

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