•
Dilution:
The light is lit during the dilution operation after the chiller-heater stops. It turns off
when the dilution operation is complete.
Set Point:
The set point of chilled/hot water leaving temperature 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 information:
• Fuel Gas Control Valve Control Output
• Chilled/Hot Water Entering or Leaving Temperature
• Cooling Water Entering or 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-heater process diagram.
Items in the chiller-heater process diagram are:
Pump
Solution circulating pump / refrigerant pump / chilled/ hot water pump / cooling water pump
- Flickers green during operation. Remains red when the pump is stopped.
69WC1 / 69WC2(option) / 69WC3(with auxiliary heat exchanger)
Differential pressure switch of chilled/hot water (69WC1), cooling water (69WC2), and 69WC3(with
auxiliary heat exchanger).
- Black when water is flowing. Turns red when the water is stopped.
Valve
Fuel gas shut-off valve / refrigerant blow valve / purge tank valve / water valve for water ejector
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 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
107
Model YHAU-CGN/H-CXR(M)Double Effect Direct Fired Small Absorption Chiller-Heater
