Carrier 33ZCVAVTRM Specifications download pdf (Page 169)

Global Override

Enable: Range No/Yes

Default Value Yes

LINKAGE THERMOSTAT — The Linkage Thermostat start

time biases allow the installer to configure the time per degree

the space should take to recover in the Heat and Cool modes

for optimum start with a Linkage Thermostat, 3V™ control

system, or an attached SPT sensor. These numbers will be used

to calculate the Start Bias time. The value entered is deter-

mined by the mass of the zone. Typically, a value of 10 (the de-

fault), will be adequate for most applications. For higher mass

areas, such as a store lobby, the value may be increased to 20 or

25.

Cool Start Bias: Units minutes/degree

Range 0 to 60

Default Value 10

Heat Start Bias Units minutes/degree

Range 0 to 60

Default Value 10

FILTER TIMER HOURS — The Filter Timer Hours config-

uration determines when the filter status will display a “Dirty”

alarm. When the Filter Timer Hours is configured to a value

other than zero and fan run time exceeds the value configured,

the filter status will display “Dirty” and a CCN alarm will be

generated. Resetting the configured Filter Timer Hours value to

zero will disable the alarm condition. The value of the timer is

stored in EEPROM to protect it in the event of a power failure.

The value is stored every 24 hours.

If configured for 0, an optional normally open filter status

switch can be read when connected the Filter Status input. Fil-

ter status will display "Clean" when open and "Dirty" when

closed.

Filter Timer

Hours: Range 0 to 99

Default Value 15 (where 15*100=1500)

INDOOR AIR QUALITY PRIORITY LEVEL — The

Indoor Air Quality Priority Level, when set to Low, ensures

that comfort is not being compromised by bringing in too much

outdoor air to maintain IAQ set point. When an override condi-

tion takes place, IAQ control is disabled, and Economizer

Minimum Position is set to the user configured value MDP.

When set to High, IAQ control is always active regardless of

indoor comfort conditions. The controller will temper cold air

(OAT <55 F) to prevent cold blow.

Indoor Air Quality

Priority Level: Range High/Low

Default Value Low

INDOOR AIR QUALITY PREOCCUPANCY PURGE —

The Indoor Air Quality Preoccupancy Purge brings in fresh

outdoor air before the Occupied mode begins. The IAQ Pre-

Occupancy Purge is used to lower carbon dioxide levels below

the IAQ set point before Occupied mode starts.

The purge is started 2 hours before the occupied time and

lasts for the specified duration.

Indoor Air Quality

Preoccupancy

Purge: Range Disable/Enable

Default Value Disable

INDOOR AIR QUALITY PURGE DURATION — The

Indoor Air Quality Purge Duration specifies the duration of

IAQ Pre-Occupancy purge. The purge is started 2 hours

before the occupied time and lasts for the specified duration.

Indoor Air Quality

Purge Duration: Display Units minutes

Display Range 0 to 60

Default Value 5

INDOOR AIR QUALITY DELTA SET POINT — The

Indoor Air Quality Delta Set Point specifies the highest

Indoor Air Quality level (measured in ppm) allowed within the

space whenever unit is in Occupied mode (or Supply Fan On

for units with Thermostat control) and Indoor Air Quality

sensor is installed.

Indoor Air Quality

Delta Set Point: Display Units PPM

(parts per million)

Display Range 1 to 5000

Default Value 650

INDOOR AIR QUALITY MAXIMUM DAMPER POSI-

TION — This point displays upper limit of the Indoor Air

Quality minimum damper position calculated by the IAQ

control.

For example, if IAQ is calculating 100% Minimum Damper

Position, but this decision is set to 50%, then the IAQ Mini-

mum Damper Position will be clamped to 50%.

NOTE: When IAQ priority is set to HIGH, this value must

reflect the maximum outdoor air percentage that the equipment

can heat or cool at worst conditions.

Indoor Air Quality

Maximum Damper

Position: Display Units % damper open

Display Range 0 to 100%

Default Value 50%

INDOOR AIR QUALITY SENSOR — The indoor air quality

sensor defines the value in parts per million (ppm) which cor-

relate to the low and high voltage readings from the sensor.

Low Reference specifies the low point of the Indoor IAQ

Sensor range in ppm.

Low Reference: Units PPM (parts per million)

Range 0 to 5000

Default Value 0

High Reference specifies the high point of the Indoor IAQ

Sensor range in ppm.

High Reference: Units PPM (parts per million)

Range 0 to 5000

Default Value 2000

OUTDOOR AIR QUALITY SENSOR — The outdoor air

quality sensor defines the value in parts per million (ppm)

which correlate to the low and high voltage readings from the

sensor.

Low Reference specifies the low point of the Outdoor IAQ

Sensor Range in ppm.

Low Reference: Units PPM (parts per million)

Range 0 to 5000

Default Value 0

High Reference specifies the high point of the Outdoor IAQ

Sensor Range in ppm.

High Reference: Units PPM (parts per million)

Range 0 to 5000

Default Value 2000

OUTDOOR AIR QUALITY LOCKOUT POINT — When

set to non-zero value, the IAQ algorithm will compare Outdoor

IAQ reading against this decision and disable IAQ control

whenever the value of OAQ exceeds this configured value.

Outdoor Air

Quality Lockout

Point: Range 0 to 5000

Default Value 0

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Carrier 33ZCVAVTRM Specifications Page 169

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