Section 5 - Parameter Descriptions And Options; Parameter Description And Options (Setpoints); Status Key Parameters; Setpoint Key Parameters - York J Series Manual

Parameter Descriptions and Options
SECTION 5 – PARAMETER DESCRIPTIONS AND OPTIONS
PARAMETER DESCRIPTION AND OPTIONS
(SETPOINTS)
The parameters listed in this section are setpoints that
are programmable through the OCC. The parameters,
or setpoints, are listed by Key Pad "groups" and are ar-
ranged in order as displayed on the OCC display. These
setpoints are also listed in Table 7 and show the units
of measure, default values, and value ranges. The text
enclosed in parentheses is the name shown on the OCC
display for the setpoint when it differs from the full name
as illustrated in the following explanation.

STATUS KEY PARAMETERS

Date and Time
The current date and time are entered. Twelve-hour
time is used. The day of the week is calculated from
the date.

SETPOINT KEY PARAMETERS

These setpoints are user setpoints that are intended to
be programmed in the field.
Unoccupied Heating
This value is the Unoccupied Heating Setpoint when in
the unit is in the unoccupied mode.
Unoccupied Cooling
This value is the Unoccupied Cooling Setpoint when
the unit is in the unoccupied mode.
Occupied Heating
This value is the Occupied Heating Setpoint when the
unit is in the occupied mode.
Occupied Cooling
This value is the Occupied Cooling Setpoint when the
unit is in the occupied mode.
VAV Cool High Temp
The control will maintain this SAT when operating in
VAV mode with a Thermostat or Network Commu-
nicated Sensor that is calling for first stage cooling.
VAV Cool Low Temp
The control will maintain this SAT when operating in
a VAV mode with a Thermostat or Network Communi-
cated Sensor that is calling for second stage cooling.
52
VAV Cool Reset Temp
This parameter is used only in VAV mode with the VAV
Operation With Thermostat selection set to OFF. This
setpoint will be used to reset the SAT setpoint based on
Space temperature or Outside Air temperature.
• If the Outside Air SAT Reset selection is set to ON,
the control will monitor the outside air temperature
and reset the SAT when the OAT is equal to or
greater than this setpoint.
• If the Outside Air SAT Reset selection is set to OFF,
the control will use the Space Sensor and reset the
SAT when the space temperature is equal to or
greater than this setpoint.
Duct Static Pressure
This is the supply duct static pressure setpoint that the
control will maintain when operating the fan in a VAV
unit.
Building Pressure
This is the building pressure setpoint the control will
maintain when operating a Power Exhaust. This set-
point will be used for Power Exhaust Configurations
1, 2 or 3 (see explanation under Configuration Key
parameters).
Economizer 1 Stage
st
This tells the control what Supply Air Temperature to
maintain for a call for first stage of cooling. This is
used only during Constant Volume cooling mode with
Economizer operation.
Economizer 2 Stage
nd
This tells the control what Supply Air Temperature to
maintain for a call for second stage of cooling. This is
used only during Constant Volume cooling mode with
Economizer operation.
SAT Econo Load Heat
The SAT Economizer Loading for Heating Setpoint is
used as the setpoint for the Supply Air Temperature
when the unit is using the economizer dampers to
maintain the SAT Econo Load Heat setpoint when one
heating stage is ON.
Outside Air Enthalpy
This tells the control an outside air enthalpy limit.
Below this limit, outside air is available for cooling.
A one BTU/LB hysteresis on each side of the limit is
to be used.
FORM 100.50-NOM7 (808)
JOHNSON CONTROLS