Greenheck Microprocessor Controller v3.0 (469690) Manual de usuario descargar pdf (Pagina 5)

Access the UNIT STATUS menu through the Main Menu. Scroll through the menu screens using the

keys. Screens with a dashed line border are dependent upon an optional accessory and may not

always appear.

“STATUS LINE”

System Status

hr:min:sec

mm/dd/yyyy

THE STATUS LINE DISPLAYS WHICH MODE THE UNIT IS IN.

Possible modes include:

A. Initial Delay J. Sys On-Dehumidifying

B. Opening Dampers K. Sys On-Dehum & Reheat

C. Exhaust Fan Starting L. Unoccupied-Unit Off

D. Supply Fan Starting M. Unoccupied-Heating

E. System On N. Unoccupied-Cooling

F. Defrost Mode Active O. Manual Override!!

G. Sys On-Economizer P. Remote Off

H. Sys On-Heating Q. Press Alarm Button!

I. Sys On-Cooling

“STATUS LINE”

Outside: 000. 0º F

Supply: 000. 0º F

Cold Coil: 000. 0º F

“STATUS LINE”

Room: 000. 0º F

“STATUS LINE”

Supply Fan:On

Exhaust Fan:On

THE TEMPERATURES ON THIS SCREEN DISPLAY REAL-TIME CONDITIONS FROM THE

SENSORS IN THE UNIT.

After a period of inactivity (approximately 3 minutes), the controller will revert to this

screen.

THE TEMPERATURE ON THIS SCREEN REPRESENTS THE REAL-TIME CONDITIONS

BASED ON THE SENSOR IN THE ROOM.

This screen only appears if the room supply temp reset sensor is wired into B4 and

BC4 on the controller.

THE CONTROLLER DISPLAYS THE RETURN SIGNAL THAT IS BEING RECEIVED FROM

THE SUPPLY AND EXHAUST FANS.

On indicates the fan is running. In most modes of operation, both fans will be On. There

are three modes in which one fan may be Off while the other is On. 1) Start-up of the

unit, 2) Timed exhaust frost control, and 3) Unoccupied, 100% return air mode. Other

than these three modes, if one fan is Off and the other is On, there may be a problem.

“STATUS LINE”

Energy Recovery

Wheel: 000% Speed

“STATUS LINE”

Cooling Control:000%

Compressor: ##

ENERGY RECOVERY WHEEL OPERATION IS DISPLAYED AS A PERCENT.

If the unit does not contain a VFD on the wheel motor, then 0% = OFF; 100% = ON. If

the unit contains a VFD to modulate the wheel speed for frost control or economizer

operation, this screen will display the percentage directly proportional to the 0-10 VDC

signal being sent to the wheel VFD

0 VDC = 000%, 10 VDC = 100%

To override: ‘MANUAL OVERRIDE’ menu >Energy Recovery Wheel Override

THIS SCREEN DISPLAYS THE COOLING CONTROL AS A PERCENTAGE.

This screen only appears if a cooling option is provided.

Chilled Water Coil: The Loop Output % is directly proportional to a 0-10 VDC signal

000% = 0 VDC - Full Closed; 100% = 10 VDC - Full Open

000% = 2 VDC - Full Closed; 100% = 10 VDC - Full Open

The cooling control valve can either be 0-10 VDC or 2-10 VDC depending upon the

valve installed. The user may need to adjust the I/O SETUP menu so that 0-100%

cooling correlates with a 2-10 VDC signal (0-10 VDC is default).

To adjust: ‘I/O SETUP’ menu> Analog Output Y3

DX Coil: Cooling Control displays compressor engagement as a percent

• 000% Compressors OFF (1 or 2 compressor system)

• 050% First compressor ON (2 compressor system)

• 100% First & second compressor ON (2 compressor system)

First compressor ON (1 compressor system)

UNIT STATUS MENU

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Greenheck Microprocessor Controller v3.0 (469690) Manual de usuario Pagina 5

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