JOHNSON CONTROLS
70
FORM 150.62-NM9 (709)
UNIT CONTROLS
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
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.
System 2 information will only be dis
-
played for 2 system units.
DISPLAY/PRINT KEYS
With the “UNIT TYPE” set as a liquid chiller (via no
jumper between J11-7 and J11-12 on the I/O Board),
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 J117
and J1112 on the I/O Board. DO NOT
operate the chiller if not properly set
up.
L C H L T = 4 6 . 2 ° F
R C H L T = 5 7 . 4 ° F
°
This display shows chilled leaving and return liquid
temperatures. 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).
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).
00067VIP
Summary of Contents for YORK YCAL0043E Series
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