Table of Contents
Advertisement
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
FIGURE 31 - MAIN SCREEN
The Main screen displays the equipment status (chill-
er-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 Combusion: 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: Light is lit if the temperature
control of the microcomputer panel changes to
RUN status. Turns off if the chiller-heater stops.
JOHNSON CONTROLS
MAIN SCREEN
• 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 heat-
ing 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: Light is lit if the load restriction acti-
vates due to the cooling water temperature, refrig-
erant temperature, or HG temperature or pressure
is higher than the set point. Light turns off when
the load restriction is removed.
• Dilution: 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.
SECTION 6 – OPERATION
LD20135
LD20135
93
6
Advertisement
Table of Contents
Troubleshooting
