JOHNSON CONTROLS
78
FORM 150.62-NM6 (103)
The Display/Print keys allow the user to retrieve sys-
tem and unit information that is useful for monitoring
chiller operation, diagnosing potential problems, trou-
bleshooting, and commissioning the chiller.
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.
OPER DATA Key
The OPER DATA key gives the user access to unit and
system operating parameters. When the OPER DATA
key is pressed, system parameters will be displayed and
remain on the display until another key is pressed. After
pressing the OPER DATA key, the various operating data
screens can be scrolled through by using the UP and
DOWN arrow keys located under the “ENTRY” section.
With the “UNIT TYPE” set as a liquid chiller (via no
jumper between J4-11 and J4-6 on the microboard),
DISPLAY/PRINT KEYS
the following list of operating data screens are view-
able under the Oper Data key in the order that they are
displayed. The ↓ arrow key scrolls through the displays
in the order they appear below:
The chiller MUST be set to be a liquid
chiller via no jumper between J4-11
and J4-6 on the microboard. DO NOT
operate the chiller if not properly set
up.
This display shows chilled leaving and return liquid tem-
peratures. The minimum limit on the display for these
parameters are 9.2°F (-12.7°C). The maximum limit on
the display is 140°F (60°C).
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).
L C H L T = 4 6 . 2 ° F
R C H L T = 5 7 . 4 ° F
°
A M B I E N T A I R T E M P
= 8 7 . 5 ° F
00067VIP
Unit Controls
System 2 information will only be dis-
played for 2 system units.
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