Main screen
Figure 53: Main screen
The main screen displays the equipment status (chiller-heater start or stop, operating, pumps ON
or OFF, purge pump ON or OFF, and chilled or hot, and cooling water pumps ON or OFF). Also, the
operating status of the various modes of chiller-heater operation.
Operating status
On the upper left of the screen below the
LOCAL
and
REMOTE
buttons is a list of options. Each has
a lamp to indicate on or off for the following:
•
Startup:
Lights if the chiller-heater is ready to start. Light is off if the chiller-heater is stopping or
if it is not ready to start.
•
Low Combustion:
The light is lit when the low combustion hold is operating. The combustion
stays in the low position before the automatic temperature control process runs.
•
Temp. Control:
The light is lit if the temperature control of the microcomputer panel changes to
RUN status. It turns off if the chiller-heater stops.
•
Thermo OFF:
In cooling mode, lights if the chilled water temperature falls to the automatic stop
temperature. Turns off when the temperature rises enough to allow an automatic restart. In
heating mode, it lights of the hot water temperature rises to the automatic stop temperature. It
turns off when the temperature falls enough to allow an automatic restart.
•
Load Limit:
The light is lit if the load restriction activates due to the cooling water temperature,
refrigerant temperature, or HG temperature or pressure is higher than the set point. It turns off
when the load restriction is removed.
Model YHAU-CGN/H-CXR(M)Double Effect Direct Fired Small Absorption Chiller-Heater
106
