Carrier 33ZCVAVTRM Specifications download pdf (Page 60)

HEAT TYPE — This configuration is used to define the type

of heat installed on the terminal. A 0 or 1 is equal to None. A 2

is equal to Two Position. A 3 is equal to Staged Electric. A 4 is

equal to Modulating/CV. A 5 is equal to combination.

Heat Type: Range 0 to 5

Default Value 0

HEATING LOOP PARAMETERS — The heating loop

gains and start value define how the terminal will respond to

deviations in measured space temperature in order to control to

the heat set point.

The Proportional Gain is calculated each time the space

temperature is compared to the heat set point. As the error

from set point goes to zero, the Proportional Gain will also go

to zero.

The Integral Gain is a running summation of all integral

terms since the loop started. This has the affect of trimming off

any offset from set point which might occur if only the

Proportional Gain existed. Normally a proportional loop with

no Integral Gain would require frequent adjustments of the

starting value to eliminate the offset as loading conditions on

the room change.

The Derivative Gain is not needed. This term tends to

nullify large changes in the Proportional Gain for dampened

response.

The Start Value is the initial value that is then modified by

the Error terms of the PID calculation.

Heating Loop Parameters

Proportional Gain: Range 00.0 to 99.9

Default Value 8.0

Integral Gain: Range 00.0 to 99.0

Default Value 3.0

Derivative Gain: Range 00.0

Default Value 0.0

Start Value: Units F (C)

Range 40 to 125

Default Value 80

DUCTED HEAT — The Ducted Heat configuration is used

to configure the terminal for ducted heat. If a local heat source

is in the duct and requires airflow to provide heat, set the Duct-

ed Heat configuration for yes.

Ducted Heat: Range No/Yes

Default Value Yes

MAXIMUM TEMPERATURE — This configuration is used

to configure the maximum supply-air temperature desirable for

heating the space. This will cause the heat to be modulated or

cycled using this value as the maximum temperature of the air

to be supplied.

Maximum

Temperature: Units F (C)

Range 40 to 200

Default Value 110

NUMBER OF ELECTRIC STAGES — This configuration

is used to define the number of stages of electric heat controlled

by the zone controller.

Number of

Electric Stages: Range 1 to 3

Default Value 1

HEAT ON DELAY — The Heat On Delay configuration is

used to define a delay from the time a parallel terminal fan is

started until the heat is activated.

Heat On Delay: Units minutes

Range 1 to 60

Default Value 2

FAN OFF DELAY — The Fan Off Delay configuration is

used to define a delay time. The delay time is from when the

heat is deactivated (in a parallel terminal) until the parallel fan

is deactivated. This allows the fan to circulate air and remove

the residual heat from the heat source.

Fan Off Delay: Units minutes

Range 1to15

Default Value 2

TWO-POSITION HEAT LOGIC — This configuration is

used for controlling a normally closed or normally open valve

for hot water. Use normal logic if the valve is normally closed.

Use inverted logic if the valve is normally open.

Two Position

Heat Logic: Range Normal/Invert

Default Value Normal

SYSTEM CALL FOR HEAT? — This decision is used

whenever auxiliary heat is available and can handle the heat

load for the zone without calling the system for heat. This

prevents the entire building from going to heat for one cold

room. Configure this decision to No when this zone should not

be allowed to call the air source for heat.

System Call

For Heat: Range No/Yes

Default Value Yes

SUPPLEMENTAL HEAT LOCKOUT TEMP — This config-

uration is the temperature setting that is compared to the

outside air temperature to make a determination if supplemen-

tal heat at the zone will be allowed to operate.

Supplemental Heat

Lockout Temp: Units F

Range –40.0 to 140 F

Default 140

SYSTEM PILOT AVERAGING — This configuration de-

termines how multiple sensors are averaged with the System

Pilot. A 0 equals System Pilot only. A 1 equals with one T55

sensor. A 2 equals with four T55 sensors. A 3 equals with nine

T55 sensors.

System Pilot

Averaging: Range 0-3

Default Value 0

SPACE TEMPERATURE TRIM — This configuration is used

to trim a space sensor which might need calibration. For

example, if the temperature displayed is two degrees above the

value measured with calibrated test equipment, input a value of

–2.0.

System Pilot

Trim: Units delta F (delta C)

Range –9.9 to 9.9

Default Value 0.0

SUPPLY AIR TEMPERATURE TRIM — This configuration

is used to trim a supply air sensor which might need calibra-

tion. For example, if the temperature displayed is two degrees

above the value measured with calibrated test equipment, input

a value of –2.0.

Supply Air Temperature

Trim: Units delta F (delta C)

Range –9.9 to 9.9

Default Value 0.0

LOCAL SAT INSTALLED — This configuration tells the

zone controller if a local SAT sensor is installed. When config-

ured as “Yes”, the zone controller will use this information to

determine if the local SAT sensor has failed or is out of range

and has sensed an alarm. When configured to “No”, the SAT

point will read 0.0° F and the SAT alarm condition will be

cleared.

Local SAT

Installed: Range No/Yes

Default Yes

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Carrier 33ZCVAVTRM Specifications Page 60

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