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The Display/Print keys allow the user to retrieve system
and unit information that is useful for monitoring chiller
operation, diagnosing potential problems, troubleshoot-
ing, 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 avail-
able.
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.
DISPLAY/PRINT KEYS
With the “UNIT TYPE” programmed as a liquid chiller
(under the Options key), the following is a list of operat-
ing data screens in the order that they are displayed:
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 85.4°F (29.7°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