JOHNSON CONTROLS
117
SECTION 7 – UNIT CONTROLS
Form 150.63-NM9
Issue date: 5/20/2021
7
Display/Print keys
00067VIP
The DISPLAY/PRINT keys allow the user to retrieve
system and unit information that is useful for moni-
toring unit operation, diagnosing potential problems,
troubleshooting, and commissioning the unit.
System and unit information, unit options, setpoints,
and scheduling can also be printed out with the use of
a printer. Both real-time and history information are
available.
ObeforeData key
The OBeforeDATA key gives the user access to unit
and system operating parameters. When the OBefore-
DATA key is pressed, system parameters will be dis-
played and remain on the display until another key is
pressed. After pressing the OBeforeDATA key, the var-
ious operating data screens can be scrolled through by
using the ↑ (UP) and ↓ (DOWN) arrow keys or the EN-
TER/ADV key located under the “ENTRY” section.
System 2 information will only be dis-
played for 2 system units.
With the “UNIT TYPE” set as a condensing unit (via
jumbeforebetween J11-7 and J11-12 on the I/O Board),
the following list of operating data screens are view-
able under the OBeforeDATA key in the order that
they are displayed. The ↓ (DOWN) arrow key scrolls
through the displays in the order they appear below:
The unit MUST be set to be a condensing
unit via jumbeforebetween J11-7 and J11-
12 on the I/O Board. DO NOT operate the
unit if not correctly set up.
D I S C H A R G E A I R T E M P
= 5 7 . 4 ° F
This display shows the discharge air temperature leav-
ing the evaporator. The display will only be shown
when the Control Mode is programmed for Discharge
Air (under the OPTIONS key). The minimum limit on
the display for these parameters are 9.2°F (-12.7°C).
The maximum limit on the display is 85.4°F (29.7°C).
A M B I E N T A I R T E M P
= 8 7 . 5 ° F
This display shows the ambient air temperature. The
minimum limit on the display is 0.4°F (-17.6°C). The
maximum limit on the display is 131.2°F (55.1°C).
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