York YHAU-CW Manual page 108

SECTION 6 – OPERATION
Set Point: The set point of chilled water leaving tem-
perature is shown on the left of the screen.
The system illustration lights (lines fill in) when the
system is operating.
An illustration of the system shows the following in-
formation:
• steam control valve or steam drain control valve
output
• chilled water entering and leaving temperature
• cooling water entering and leaving temperature
• refrigerant temperature
• absorber temperature
• high temperature generator pressure
• high temperature generator temperature
• high temperature generator concentration
• purge tank pressure
This screen shows the status of the equipment in the
chiller process diagram.
108
Items in the chiller process diagram are:
Pump
Solution Circulating Pump, Solution Spray Pump,
Refrigerant Pump, Purge Pump, Chilled Water
pump, Cooling Water pump
Flickers white during operation. Remains black
when the pump is stopped.
69WC1 or 69WC2 (option)
Differential pressure switch of chilled water
(69WC1) and cooling water (69WC2)
White when water is flowing. Turns black when
the water is stopped.
Valve
Steam control valve or steam drain control valve,
steam drain solenoid valve, refrigerant blow
valve, purge tank valve
White indicates valve is shut off. Any other color
indicates the valve is open.
The condition lights show the current operating mode
and status of the system.
The four (4) buttons along the bottom of the Main
screen are common to many of the other screens in the
Control Panel. They all can be used to move around
and access other screen information. They are:
• MAIN: return to the initial screen
• DATA: move to the Data screen
• FAIL or ALARM: move to the Failure and Alarm
screen
• SETTING: move to the Setting screen
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
JOHNSON CONTROLS