Carrier 33ZCVAVTRM Specifications download pdf (Page 110)

shall not allow reheat to function unless the zone has

a valid supply air sensor.

E. If a linkage master loses communications with the

equipment controller and it has a primary air tem-

perature sensor installed, the linkage master zone

controller shall determine the equipment operating

mode based on the temperature of the primary air,

and the system pressure measured at the bypass

controller. If no bypass controller exists, the air

source will be determined to be always on.

F. If a linkage master loses communication with an

associated zone controller, the linkage master shall

alarm and remove that zone temperature from its

weighted averages. The zone controller shall con-

tinue to operate in a stand-alone mode.

Part 5 — System

5.01 The system shall include the ability to configure and

display up to 32 zones for each air source. A zone

shall be defined as a space temperature sensor wired

to a zone controller.

A. Configuration:

Each zone shall have the ability to configure and dis-

play the following:

1. Minimum/Maximum damper position limits

used by the terminal control when the air

source is in the Cooling mode.

2. Minimum/Maximum damper position limits

used by the terminal control when the air

source is in the Heating mode.

3. Reheat damper position limit (single duct units

only) used when local heat is required and the

air source is in Cooling mode.

4. Ventilation damper position when air source is

in cooling or free cooling mode.

5. Terminal Inlet size (diameter or square inches).

6. Heating type.

7. Central Heating caller.

8. Heat on delay.

9. Fan off delay (parallel terminal fans only).

10. Maximum duct temperature.

11. Alarm set points.

12. Occupancy Override value.

13. Heating and cooling Occupied/Unoccupied

temperature set points.

14. Ventilation set point (CO

2) and maximum

damper position limit.

15. Heat enable/disable.

B. Zone Display:

Zones shall have the capability to display the follow-

ing as a minimum:

1. Terminal operating mode and terminal type.

2. Zone space temperature.

3. Actual damper blade position (0 to 100%

open).

4. Primary air temperature (if applicable).

5. Terminal fan status (if applicable).

6. Leaving temperature (heating only).

7. Zone CO

2 (if applicable).

8. Zone Relative Humidity (if applicable).

C. Maintenance Display:

Maintenance screens shall be provided to ease and

expedite the task of troubleshooting. The screens

shall have the capability to display the following as a

minimum:

1. The current calculated damper reference.

2. Occupancy and override status.

3. Current user set point offset value.

4. Current heating and cooling set points.

5. Heat Status (if applicable).

6. Ducted heating reference temperature.

7. Current Air Source operating mode and supply

temperature.

8. Average zone temperature, average occupied

zone temperature, and the next occupied/

unoccupied day and time for all terminals

serviced by each respective air handler (linkage

master only).

9. Occupancy maintenance screens shall display

such information as timed override status and

duration and current occupied and unoccupied

time (Local schedule only).

10. Position of the open primary air damper of all

terminals serviced by their respective air han-

dler (coordinator only).

Part 6 — Linkage

6.01 Each zone controller shall have the capability to

directly communicate to a factory supplied air

source microprocessor to provide a totally linked

and coordinated Air Distribution System.

A. The linkage shall include the following air source

modes for use by the Coordinator as a minimum:

Off, Cooling, Heating, Night Time Free Cooling,

Pressurization, and Evacuation.

B. The linkage shall also provide system data to the air

source controller for use in its algorithms.

C. The coordinator shall periodically poll its assigned

zones to acquire their updated values.

D. Space temperature and space temperature set

points acquired by the coordinator for use by the air

handler controller shall include a weighted factor,

proportional to the size of the zone.

E. Only those zones with valid temperature readings

shall be included.

F. The system data shall include average zone tempera-

ture, average occupied zone temperature, average

occupied and unoccupied heat/cool set points,

occupancy status, and the next occupied zones ter-

minal time and day.

Guide specifications — 3V™ control system (cont)

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Carrier 33ZCVAVTRM Specifications Page 110

Comments to this Manuals

Carrier 33ZCVAVTRM Specifications Page 110

Comments to this Manuals

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