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Start-Up and Shutdown
Figure 52. Sequence of operation: Tracer
Black Screen
First Trane Logo
White Screen
10 Sec
20 Seconds
Operator Display Boot Up and Load
In the following diagrams:
•
The time line indicates the upper level operating mode,
as it would be viewed in the Tracer AdaptiView.
•
The shading color of the cylinder indicates the software
state.
•
Text in parentheses indicates sub-mode text as viewed
in the Tracer AdaptiView.
•
Text above the time line cylinder is used to illustrate
inputs to the Symbio™ 800. This may include user
input to the Tracer AdaptiView touch screen, control
inputs from sensors, or control inputs from a generic
BAS.
•
Boxes indicate control actions such as turning on
relays, or moving the inlet guide vanes.
•
Smaller cylinders under the main cylinder indicate
diagnostic checks.
•
Text outside a box or cylinder indicates time-based
functions.
•
Solid double arrows indicate fixed timers.
•
Dashed double arrows indicate variable timers.
76
®
AdaptiView™ power up
User Interface Template...
Grey Screen
5 Sec
30 Seconds
105 sec Total to Display Ready
-
Loading Data....
25 Seconds
15 Sec
Start-up Sequence of Operation—Wye-
delta
Logic circuits within the various modules will determine the
starting, running, and stopping operation of the chiller.
When operation of the chiller is required, the chiller mode is
set at Auto. Using customer-supplied power, the chilled
water pump relay is energized and chilled water flow must
be verified within 4 minutes and 15 seconds. The controller
decides to start the chiller based on the differential to start
setpoint. With the differential to start criteria met, the
controller then energizes condenser water pump relay with
customer-supplied power (refer to the following figure).
Based on the Restart Inhibit function and the Differential to
Start setpoint, the oil and refrigerant pump is energized.
The oil pressure must be at least 12 psid (82.7 kPaD) for
60 continuous seconds and condenser water flow verified
within 4 minutes and 15 seconds for the compressor start
sequence to be initiated.
The compressor motor starts in the Wye configuration and
then, after the compressor motor has accelerated and the
maximum phase current has dropped below 85 percent of
the chiller nameplate RLA for 1.5 seconds, the starter
transitions to the Delta configuration.
Display Ready
*Display will show
either Auto or Stop
button as "active "
(depressed) once
it is ready
CVHE-SVX005C-EN
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