Greenheck Microprocessor Controller v3.0 (469690) Manual de usuario descargar pdf (Pagina 9)

Lockout dehumidific-

ation until outside

air is:10.0ºF above

cold coil set point

THIS SCREEN DISPLAYS THE TEMPERATURE DIFFERENCE AT WHICH THE

DEHUMIDIFICATION ON THE UNIT IS LOCKED OUT (FACTORY DEFAULT = 10ºF).

This screen will only appear if cooling was provided with the unit.

This setting prevents the unit from operating in dehumidification mode when outdoor

air conditions are relatively cool. For example, if the cold coil set point is 55ºF,

dehumidification mode cannot operate until the outdoor air is at least 65ºF.

Defrost

Allow wheel defrost

mode when outside

is less than: 05.0ºF

THIS SCREEN DISPLAYS THE TEMPERATURE AT WHICH THE UNIT WILL BEGIN FROST

CONTROL MODE.

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

The energy wheel transfers both latent and sensible energy at relatively similar

efficiencies. Therefore, in most applications where indoor mositure levels are

below 35% RH, frost typically will not occur on the energy wheel until outdoor air

temperatures are below 5ºF. Consult the factory if you have any concerns regarding

your specific application.

Supply air low limit

alarm when supply is

less than: 35.0ºF

Alarm delay:300s

THIS SCREEN DISPLAYS WHAT THE LOW TEMPERATURE LIMIT IS FOR THE UNIT.

If the unit supply discharge temperature falls below Supply Air Low Limit set point

(factory default 35F) for a period of time (factory default 300 sec) the unit will shut down

and an alarm will be signaled. The purpose of the Discharge Freeze Protection is to

protect the building and contents from low temperature supply air. It is NOT designed

to protect the Energy Recovery unit.

If the Energy Recovery unit does not have CW or HW coils (has only no heat, IG heat,

electric heat, no cooling, or Dx cooling) it should not need additional protection from

freezing. If the Energy Recovery unit does have CW or HW coils, please contact the

factory for more details.

End of Set Points

Economizer Lockout

Lockout econo when

outside air <:40.0ºF

Hysteresis=02.0ºF

ECONOMIZER LOCKOUT PREVENTS THE UNIT FROM GOING INTO ECONOMIZER

MODE WHEN OUTDOOR AIR CONDITIONS ARE TOO COLD.

This screen only appears if economizer was provided with the unit.

The lockout prevents outdoor air from 1) entering the space at too cold of a

temperature or 2) entering heating and cooling coils at conditions that could freeze

the coils. Built-in hysteresis of 2ºF. The hysteresis is similar to a deadband above and

below the lockout set point.

(Example: If Lockout = 40ºF, economizer is locked out below 38ºF and enabled above

42ºF outside air temp)

SET POINTS MENU - continued

Cooling Lockout

Lockout cooling when

outside air <:55.0ºF

Hysteresis=02.0ºF

THIS CONTROLLER WILL LOCK THE COOLING SECTION OFF WHEN THE OUTDOOR AIR

TEMPERATURE IS BELOW THE COOLING LOCKOUT SET POINT

(FACTORY DEFAULT = 55ºF).

This screen will only appear if Cooling was provided with the unit.

There is a built in hysteresis of 2ºF which prevents the compressors from short cycling.

The hysteresis is similar to a deadband above and below the lockout set point.

(Example: If Lockout = 55ºF, cooling is locked out below 53ºF and end enabled above

57ºF outside air temp).

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 23 24

Comentarios a estos manuales

Sin comentarios

Greenheck Microprocessor Controller v3.0 (469690) Manual de usuario Pagina 9

Comentarios a estos manuales

Relacionado con productos y manuales para Equipo Greenheck Microprocessor Controller v3.0 (469690)