Table of Contents
Advertisement
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
YHAU-CGN/H CONTROL CENTER
The YHAU-CGN/H Control Center, furnished as stan-
dard on each chiller-heater, allows for efficiency, mon-
itoring, data recording, chiller-heater protection, and
operating ease. The Control Center is factory-mounted,
wired, and tested. It used as a control system for lithi-
um bromide absorption chiller-heaters.
The panel is configured with a color TFT Display with
buttons that are integrated into the display. A single
button reveals a wide array of information on a large,
full-color illustration of the appropriate component. In-
formation is easier to interpret.
The LCD display allows for a graphic animated dis-
play of the chiller-heater, its sub-systems and system
parameters. In addition, you may view the historical
operation of the chiller-heater as well as the present op-
eration. A Status Bar displays at all times on all screens.
It contains the System Status Line and Details Line, the
Control Source, Access Level, Time and Date.
The panel display is available in various languages.
The language can be changed without having to turn
off the chiller-heater.
Data can be displayed in Metric units plus keypad en-
try of set points to 0.1 increments.
Security access using passwords is provided to prevent
unauthorized changes of set points. There are three lev-
els of access. Each level has its own password. There
are certain screens, displayed values, programmable
set points, and manual controls not shown that are used
for servicing the chiller-heater.
JOHNSON CONTROLS
SECTION 6 – OPERATION
COMMON ITEMS
The Control Center screens have items that are applica-
ble to each feature of the Control Center. This includes
the following common items:
• LOCAL and REMOTE: Buttons that allow you
• Operating Status: The display appears at the
• Failure and Alarm: Warning lamps that light if
• Date and Time: Shown on the upper right corner
• OPER. and STOP: Buttons in the lower left cor-
Buttons are listed in the order they are
seen on the screen: left to right and top
to bottom.
to switch the operating location between remote
and local. The setting can be changed while the
chiller-heater is operating. Press and hold the ap-
propriate button for 2 sec. to make the change.
center top of the screen. It shows the following
operating conditions: Stop, Operating, and Failure
Activating.
the chiller-heater has a failure or a warning alarm.
of each screen.
ner to allow you to stop or start the chiller-heater.
6
LD20135
91
Advertisement
Table of Contents
Troubleshooting
