Greenheck Microprocessor Controller v3.0 (469690) Manual de usuario descargar pdf (Pagina 6)

“STATUS LINE”

Hot Gas Reheat:000%

Heater Control:000%

“STATUS LINE”

Energy recovery

wheel differential

pressure is: Normal

“STATUS LINE”

Preheat heater: OFF

End of status menu

THIS SCREEN DISPLAYS THE CURRENT REHEAT AND HEAT OPERATION OF THE UNIT.

Hot Gas Reheat only appears if provided with unit.

Hot Gas Reheat operation is on/off control displayed as a percent.

100% is ON and 000% is OFF

To override: ‘MANUAL OVERRIDE’ menu >Hot Gas Reheat Override

For Modulating Hot Gas Reheat Control:

000% is OFF and 001% HGRH is ON and the airflow damper is modulating

between 4 VDC and 10 VDC.

Heater Control displays the real-time percent heater output and is directly proportional

to a 0-10 VDC signal provided by the discharge temperature sensor.

To override: ‘MANUAL OVERRIDE’ menu >Heating Loop Override

Electric Heater: The Heater Control % is directly proportional to a 0-10 VDC signal

being sent to the SCR controller in the electric heater’s control center.

000% = 0 VDC = 0 kW output

100% = 10 VDC = Maximum kW output

Indirect Gas Furnace: The Heater Control % is directly proportional to a 0-10 VDC

signal being sent to the indirect gas furnace control board. The first stage is full ON at a

1% Heater Control. Once the Heater Control reaches 50%, the second stage modulates

between 50% and 100% output.

001 – 049% First stage: ON, Second stage: OFF

050 – 100% First stage: ON, Second stage: Modulating between

50% and 100% output

Hot Water Heater: The heating control valve (supplied by others) can either be 0-10 VDC

or 2-10 VDC depending upon what valve is installed. The user may have to adjust the

‘I/O SETUP’ menu so that a 0-100% heating correlates with a 2-10 VDC signal (0-10 VDC

is default).

To adjust: ‘I/O SETUP’ menu >Analog Output Y2

THE UNIT CONTAINS A WHEEL PRESSURE DROP SENSOR TO INDICATE WHETHER

THE PRESSURE ACROSS THE WHEEL IS NORMAL OR HIGH.

This screen only appears if a frost control method was provided.

A status of High is an indication of frost accumulation. The pressure set point is

adjustable on the wheel pressure switch.

THIS SCREEN INDICATES WHETHER THE ELECTRIC PREHEAT FROST CONTROL IS ON

OR OFF.

This screen only appears if Electric Preheat frost control was provided.

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

UNIT STATUS MENU - continued

THIS SCREEN DISPLAYS THE COOLING CONTROL AS A PERCENTAGE (CONTINUED)

The Compressor line indicates which compressor is ON

1 First compressor

2 Second compressor

1 2 Both compressors

To override: ‘MANUAL OVERRIDE’ menu >Cooling Loop Override

“STATUS LINE”

Cooling Control:000%

Compressor: ##

1 2 3 4 5 6 7 8 9 10 11 ... 23 24

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Greenheck Microprocessor Controller v3.0 (469690) Manual de usuario Pagina 6

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