JOHNSON CONTROLS
143
SECTION 7 – PARAMETER DESCRIPTIONS AND OPTIONS
FORM 100.50-NOM6
ISSUE DATE: 8/07/2017
7
TABLE 36 –
DEFINITIONS (CONT'D)
MENU ITEM
DEFINITION
CV CURRENT OPERATING HEATING SETPOINT
This parameter identifies the heating setpoint the Unit Controller is
controlling to heating too
CV OCCUPIED COOLING Setpoint
This is the space or return air temperature the unit will control to when
in the occupied cooling mode.
CV OCCUPIED HEATING Setpoint
This is the space or return air temperature the unit will control to when
in the occupied heating mode.
CV UNOCCUPIED COOLING Setpoint
This is the space or return air temperature the unit will control to when
in the unoccupied cooling mode.
CV UNOCCUPIED HEATING Setpoint
This is the space or return air temperature the unit will control to when
in the unoccupied heating mode.
DAY OF MONTH
This parameter is used to enter the current day of the month, 1 - 31
DAY OF WEEK
This parameter is used to enter the day of the week (1-7) with 1 equal
to Sunday
DEMAND VENTILATION (IAQ) ENABLED
This parameter must be turned ON to enable Demand Ventilation.
Demand Ventilation increase the amount of ventilation air in response
to a increase in the CO
2
level in the conditioned space
DEMAND VENTILATION (IAQ) VALUE (CO
2
)
This the CO
2
input value to the Unit Controller in PPM
DIFFERENTIAL ENTHALPY MODE ENABLED
This parameter must be turned ON in order to use DIFFERENTIAL
ENTHALPY
DIRTY FILTER SWITCH DATA
This parameter give the status of the dirty filter switch, 0 = clean, 1 =
dirty
DIRTY FILTER SWITCH INSTALLED
This parameter must be set to ON to enable the dirty filter feature on
the unit. A dirty filter switch must also be installed for this feature to
function
DUCT PRESSURE SETPOINT
The Unit Controller varies the speed of the supply fan on a VAV unit
to maintain this programmed setpoint
DUCT PRESSURE SHUTDOWN SETPOINT
If the duct static pressure on a VAV unit exceed this value the unit will
shut down the fan and lock out the unit
DUCT STATIC READING
This parameter gives the current value of the Duct Static pressure
input
ECONOMIZER DAMPER OUTPUT STATUS
This gives the status of the Unit Controller output to the economizer
damper in %
ECONOMIZER DAMPER POSITION FOR
EXHAUST TURN OFF
When ON/OFF exhaust is being used this is the position of the
economizer damper to turn off the exhaust fan
ECONOMIZER DAMPER POSITION FOR
EXHAUST TURN ON
When ON/OFF exhaust is being used this is the position of the
economizer damper to turn on the exhaust fan
ECONOMIZER FIRST STAGE SETPOINT
On a Constant Volume unit the Unit Controller will try and maintain the
supply air temperature at this setpoint in the economizer mode with a
first stage cooling call
ECONOMIZER INSTALLED
This parameter must be turn ON to enable economizer operation
ECONOMIZER IS CURRENTLY USING FREE
COOLING
This identifies if the Unit Controller is using outdoor air to satisfy the
cooling demand, OFF or ON
ECONOMIZER LOADING ENABLE
This parameter must be turned ON to enable ECONOMIZER
LOADING
ECONOMIZER MINIMUM POSITION
This parameter establishes the position of the outdoor damper when
the economizer is inactive and the unit is in the occupied mode
ECONOMIZER OUTSIDE AIR ENTHALPY
SETPOINT
This is the outdoor enthalpy setting which determines when to switch
into and out of economizer operation in single enthalpy economizer
mode
