Occupancy Determination - Carrier 48PG03-16 Controls, Start-Up, Operation, Service And Troubleshooting Instructions

Fan Status Switch (FN.SW)
This configuration identifies if a fan status switch is installed, and
what status (normally open, normally closed) the input is when
the indoor fan is OFF.
Filter Status Switch (FL.SW)
This configuration identifies if a filter status switch is installed,
and what status (normally open, normally closed) the input is
when the filter is CLEAN.
Fire Shutdown Switch (FS.SW)
This configuration identifies if a fire shutdown switch is installed,
and what status (normally open, normally closed) the input is
when the fire or smoke alarm is OFF (no alarm).
Remote Occupancy Switch (RM.SW)
This configuration identifies if a remote occupancy switch is
installed, and what status (normally open, normally closed) the
input is when UNOCCUPIED.
SAT Settling Time (SAT.T)
This configuration sets a supply air temperature settling time
before using the reading for compressor staging in some units
with multiple circuits. See Adaptive Thermostat Control (U.CTL
= 2, T.CTL = 0) and Space Sensor Control (U.CTL = 3) within
the Cooling operation section for more information. The factory
default value is 240 seconds.
SAT Heat Mode Sensing (SAT.H)
This configuration controls the display of the supply-air
temperature during heating operation. A DISABLE value will
force the displayed supply-air temperature (SAT) to zero when
heat is ON and for 5 minutes after. A ENABLE value will display
the temperature at all times. See the Heating sections for more
information. The factory default is DISABLE due to the factory
SAT sensor location. This point is repeated in the Heating
Configuration menu.
RAT Sensor On SPTO Input (RAT.S)
This configuration identifies if a return air temperature (RAT)
sensor is installed on the space temperature offset (SPTO) input.
A YES value enables RAT display. A NO value disables RAT
display.
RH Sensor On OAQ Input (RH.S)
This configuration identifies if a space relative humidity sensor is
installed on the outdoor air quality (OAQ) input. A YES value
enables SP.RH display. If a Humdi-MiZer™ unit, then the unit
determines dehumidification demand based on this input and the
appropriate set point. A NO value disables SP.RH display and
use.
Space Humidity Switch (RH.SW)
This configuration identifies if a space relative humidity switch is
installed on the ENTHALPY input, and what status (normally
open, normally closed) the input is when the space humidity is
LOW.
Temperature Compensated Start Cooling Factor (TCS.C)
This factor is used in the equation of the Temperature
Compensated Start Time Bias for cooling. A setting of 0 minutes
indicates Temperature Compensated Start in Cooling is not
permitted.
Temperature Compensated Start Heating Factor (TCS.H)
This factor is used in the equation of the Temperature
Compensated Start Time Bias for heating. A setting of 0 minutes
indicates Temperature Compensated Start in Heating is not
permitted.

Occupancy Determination

Many factors determine whether the unit considers the building
occupied or unoccupied. If the unit is operating with a space
temperature sensor (T-55, T-56 or T-58), occupancy affects the
unit set points and the operation of the economizer. If the unit is
operating under thermostat control, occupancy only affects the
operation of the economizer. The factors affecting occupancy are
listed below from highest to lowest priority.
1. The CCN point OCCUPIED is forced via an external
device such as a ComfortID™ controller: When
OCCUPIED is forced to YES, the unit is considered
occupied. When OCCUPIED is forced to NO, the unit is
considered unoccupied. If OCCUPIED is not being
forced, proceed to the level 2 priority.
2. Remote Occupancy Switch should be configured to either
Normally Open or Normally Closed when the user would
like to control the occupancy with an external switch. This
switch is field-supplied (24-v, single pole, single throw
[SPST]). There are three possible configurations for the
remote occupancy switch: No Switch (0), Normally Open
(1) or Normally Closed (2). This configuration is
accessible on the display at Configuration→UNIT→
RM.SW. If the switch is configured to No Switch (0), the
switch input value will be ignored and software will
proceed to the level 3 priority. For each type of switch, the
appropriate configuration and states are listed in the table
below.
SWITCH
TYPE OF SWITCH
CONFIGURATION
Occupied when p
closed or closed or
N Normal Open (1)
Unoccupied
when open
Occupied when p
open or open or
N Normal Close (2)
Unoccupied
when closed
NOTE: To perform remote occupancy, an Economizer Control
Board must be installed in the unit.
3. The following occupancy options are determined by the
state of Occupancy Schedule Number (Configuration→
CCN→SCH.O→SCH.N) and the Global Schedule
Broadcast (Configuration→CCN→BROD→B.GS).
a. SCH.N = 0: The unit is always considered occupied and
the programmed schedule is ignored. This is the factory
default.
b. SCH.N = 1-64: Follow the local programmed schedule.
Schedules 1 to 64 are local within the controller. The
48/50PG unit can only store one local schedule and
therefore changing this number only changes the title of
the schedule table.
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STATE OF
SWITCH AND STATE
OF OCCUPANCY
Open and Unoccupied
l O (1)
Closed and Occupied
Open and Occupied
l Cl (2)
Closed and Unoccupied