Carrier 50XJ064-104 specifications SETPT01

8.Enter the last two digits of the current year. Press

ENTER then press . The LID display will show: Update Clock

No

9.Press 1 and then ENTER to cause the controller to update the clock. The LID display will flash. Press CLEAR twice to view the default display and the clock should update to the input time and date.

Configure Schedules — Schedules are one method of starting and stopping the unit at specified intervals. To config- ure the schedules, perform the following procedure:

1.Press 1 and then SCHD . The LID display will show: Occupancy Algorithm

2.Press ENTER . The LID display will show: Time Schedule

Enter to select

3.Press ENTER . If the LID display shows “MODE 0” then the user is in Maintenance mode and the LID display is showing the maintenance information for the occupancy schedule. Press EXPN/EDIT to enter the configuration mode. The LID display will show:

Manual Override Hours 0 hours

This is the first configuration for each occupancy algorithm and is used to put the schedule in or out of occupancy override for the number of hours entered.

4.Press . The LID display will show: Period 1: Day of week

00000000

The eight digits represent if this period should apply to certain days of the week or holidays. The digits repre- sent M, Tu, W, Th, F, Sa, Su, and Hol, respectively. Enter a series of 0s or 1s with a 1 corresponding to the days that this period should apply to and a 0 for the days that this schedule should not apply to. As an example, entering 11111000 would make the schedule apply to days Monday through Friday and not apply to Saturday, Sunday, or Holidays.

5.Press the button. The LID display will show: Period 1 occupied from

00:00

6.Input the Occupancy Start time for this period. NOTE: 12.00 represents 12:00 pm.

7.Press the to input the Occupied To time for period 1.

8.Input the days and times for periods 2 through 8 as required.

9.Press clear to leave the occupancy programming.

Program Set Points — To program the set points, perform the following procedure:

1.Press 2 and then SCHD . The LID display will show: Set point Schedule

2.Press ENTER . The LID display will show: Supply Fan Status

SETPT01

3.Press ENTER .

4.If “No maintenance” is displayed, press EXPN/EDIT to view the set point information. The LID display will show:

Occupied Lo Set point

0.30 ″ H2O

This is the pressure set point below which the fan is considered to be off.

5.Press . The LID display will show: Occupied Hi Set point

0.40 ″ H2O

This is the pressure set point above which the fan is considered to be on.

The down or up arrow will also display the Unoccu- pied Low and High Temperature set points. These values should be kept the same as the occupied values.

6.Setpoint 02 internally coordinates the supply air set point reset in several of the algorithms and can not be modified.

Setpoint 03 is used for comparison by the unit to return air, Space temperature or Average space temperature through linkage to determine when to start reset of the supply air when occupied, when to turn on heat and disable cooling when occupied and when to bring the unit on for unoccupied heating or cooling.

Setpoint 04 is used to set the head pressure set point if the unit is ordered with the head pressure control option. Only the Occupied Low set point may be modified the other values will change to the Occupied low valued shortly after it is modified so that all the values remain the same.

Setpoint 05 is used to set the supply air static pressure the unit should maintain. Only the Occupied Low set point may be modified the other values will change to the Occupied low value shortly after it is modified so that all the values remain the same. The set point in the static pressure control algorithm will also follow and cannot be modified in the algorithm configuration screens.

Setpoint 06 is the Supply air temperature set point. Only the Occupied Low set point may be modified the other values will change to the Occupied low value shortly after it is modified so that all the values remain the same. The set point in DX VAV staging and some of the other algorithms will also follow and cannot be modified in the algorithm configuration screens.

Setpoint 07 is the building pressure set point for the building pressure control of a variable speed exhaust fan from a field-supplied module. Only the Occupied Low set point may be modified the other values will change to the Occupied low value shortly after it is modified so that all the values remain the same.

Setpoint 08 is the raw milliamp set point for the build- ing pressure control and is tied to Setpoint 07 for the sensor range selected in the custom programming configuration. Several choices of building static pressure sensors may be purchased and supplied for building pressure control.

Setpoint 09 is used for the humidification/dehumidification output from a field-supplied module. This set point may be modified to enable the Humidity output to either humidify or dehumidify when the indoor relative humidity (IRH) exceeds the set point.

Table 7 lists the available controller set points and their default values.

7.Pressing the CLEAR button will take the user out of the set point configuration mode.

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