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JOHNSON CONTROLS
97
FORM 150.63-NM6 (1020)
“SETPOINTS” KEYS
00069VIP
2
Programming of the cooling setpoints, daily schedule,
and safeties is accomplished by using the keys located
under the SETPOINTS section.
The three keys involved are labeled COOLING
SETPOINTS, SCHEDULE/ADVANCE DAY, and
PROGRAM.
Following are instructions for programming the respec-
tive setpoints. The same instruction should be used to
view the setpoints with the exception that the setpoint
will not be changed.
COOLING SETPOINTS
The Cooling setpoint and Range can be programmed
by pressing the COOLING SETPOINTS key. After
pressing the COOLING SETPOINTS key, the Cooling
Mode (Discharge Air Temperature or Suction Pressure
Control) will be displayed for a few seconds, and then
the setpoint entry screen will be displayed.
Following are the four possible messages that can be
displayed after pressing the COOLING SETPOINT key,
indicating the cooling mode:
This message indicates that the cooling setpoint is under
LOCAL control. That is, the cooling setpoint is con-
trolling to the
locally
programmed setpoint. The message
also indicates that the control point is based on Discharge
Air temperature leaving the evaporator coil.
This message indicates that the cooling setpoint is under
LOCAL control (the cooling setpoint is controlling to
the
locally
programmed cooling setpoint). However, un-
like the previous message, it is now indicating that the
control point is based on Suction Pressure.
L O C A L D I S C H A R G E
A I R T E M P C O N T R O L
L O C A L S U C T I O N
P R E S S U R E C O N T R O L
Unit must first be checked for "Unit Type - Condensing Unit" under the
Option Key to allow programming of appropriate setpoints. This is ac-
complished by the jumper between J4-11 and J4-6 on the microboard.
Summary of Contents for YCUL0045
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