heat-recovery condenser, it is comparatively smaller in
size, and its heating capacity is not controlled. Trane does
not recommend operating the auxiliary condenser alone
because of its small size.
Control Panel Devices and Unit
Mounted Devices
Unit Control Panel
Safety and operating controls are housed in the unit
control panel, the starter panel and the purge control
panel. The control panel‘s operator interface and main
processor is called Tracer AdaptiView and is located on
an adjustable arm connected to the base of the control
panel (for detailed information about operating Tracer
AdaptiView, see CTV-SVU01C-EN,
Tracer AdaptiView™
Display for Water-Cooled CenTraVac™ Chillers Opera-
tions Guide
, or the most recent version).
The control panel houses several other controls modules
called panel mounted LLID (Low Level Intelligent Device),
power supply, terminal block, fuse, circuit breakers, and
transformer. The IPC (Interprocessor communication)
bus allows the communications between LLIDs and the
main processor. Unit mounted devices are called frame
mounted LLIDs and can be temperature sensors or pres-
sure transducers. These and other functional switches
provide analog and binary inputs to the control system.
Variable Water Flow Through the Evapo-
rator
Varying the water flow reduces the energy consumed by
pumps, while requiring no extra energy for the chiller.
This strategy can be a significant source of energy sav-
ings, depending on the application. With its faster and
more intelligent response to changing conditions, the
UC800 reliably accommodates variable evaporator water
flow and its effect on the chilled water temperature.
These improvements keep chilled water flowing at a
temperature closer to its setpoint.
User-Defined Language Support
Tracer AdaptiView is capable of displaying English text
or any of twenty-four other languages. Switching lan-
guages is simply accomplished from a language settings
menu.
Unit Start-Up and Shut-down
Procedures
D
WARNING
Live Electrical Components!
During installation, testing, servicing and trouble-
shooting of this product, it may be necessary to
work with live electrical components. Have a qual-
ified licensed electrician or other individual who
has been properly trained in handling live electrical
components perform these tasks. Failure to follow
all electrical safety precautions when exposed to live
electrical components could result in death or serious
injury.
D
WARNING
Toxic Hazards!
• Do not run evaporator water pump longer than 30
minutes after the chiller is shutdown.
• Ensure that the evaporator is isolated from the hot
water loop before changeover to heating mode.
Do not allow the chiller to increase above 110°F in
temperature while unit is off. Failure to prevent high
chiller temperature will cause the inside pressure
to rise. The rupture disk is designed to relieve and
discharge the refrigerant from the unit if the pressure
in the evaporator exceeds 15 PSIG (103.4 Kpa). A sig-
nificant release of refrigerant into a confined space
due to a rupture disk failure could displace available
oxygen to breathe and cause possible asphyxiation.
Should a rupture disk fail, evacuate the area immedi-
ately and contact the appropriate rescue or response
authority. Failure to take appropriate precautions or
react properly to a potential hazard could result in
death or serious injury.
Unit Start-Up Check
1. Verify the chilled water pump and condenser water
pump starter are in ON or AUTO.
2. Verify the cooling tower is in ON or AUTO.
3. Check the oil tank oil level, the level must be visible
in the lower sight glass. Also, be sure to check the oil
tank temperature; normal oil tank temperature before
start-up is 140°F to 145°F (60°C to 63°C).
Note:
Each oil heater is energized during the compres-
sor off cycle. During unit operation, the oil tank
heater may be de-energized. The oil heater may
be energized during unit operation with R-514A.
Note:
If the chiller is equipped with the free cooling
option, ensure that the free cooling option is dis-
abled in the Chiller Settings menu.
4. Check the chilled water setpoint and readjust it, if
necessary, in the Chiller Settings menu.
RELEASED 10/Mar/2020 06:59:20 GMT
