Trane RTAF-SVX001K-EN - Stopped to Starting

Start-Up and Shutdown
RTAF-SVX001K-EN 63
Stopped to Starting
The figure below shows the timing from a stopped mode
to energizing the first compressor. The shortest allowable
time would be under the following conditions:
• No motor restart inhibit time left from subsequent
starts
• Evaporator Water flow occurs quickly with pump on
command
• Need to cool (differential to start) already exists
The above conditions would allow a compressor to start in
about 20 seconds.
Figure 41. Sequence of events: stopped to starting
6
/
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6
6
1
2
/
/
2
2
2
0
1
2
-
1
2
/
/
2
2
1
1
/
/
1
2
0
1
2
Confirm Presence
of Oil Within
90 Seconds
6
/
6
1
1
1
1
1
/
/
5
5
/
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5
2
2
2
2
2
/
/
/
/
0
0
0
0
0
0
0
C
0
0
1
1
1
1
1
1
1
C
2
2
2
2
2
2
2
o
Stopped
Or Run
Inhibit
*Lead Compressor (and its lead circuit)is
determined by staging algorithm–“Balanced”,
“Circuit 1Lead”,or “Circuit 2 Lead” selection –
also influenced by lockouts,restartinhibit,or
diagnostics present
**Note:If Free Cooling is active, itwill be the first
stageof cooling to stage on.
6
6
/
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6
1
1
1
1
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/
2
2
2
2
2
2
2
/
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2
2
2
2
2
2
/
/
/
/
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/
0
0
0
1
1
1
2
2
2
-
7
7
7
/
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7
7
7
3
3
3
/
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/
/
/
/
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/
3
3
3
2
2
2
/
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/
/
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/
Stop
6
/
6
1
/
/
3
/
3
2
/
/
0
1
2
Auto Mode commanded
by FrontPanel or BAS
Confirm Evaporator Water Flow
(6 Second Filter)
Enforce Restart Inhibit Timer
(0 to 1 minute)
7
7
7
7
/
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7
7
7
7
2
2
2
2
/
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/
/
/
/
/
/
/
/
/
/
2
2
2
2
2
2
2
2
/
/
/
/
/
/
/
0
0
0
0
1
1
1
1
2
2
2
2
-
-
9
9
9
9
/
/
/
/
/
9
9
9
9
3
3
3
3
/
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/
/
/
/
/
/
/
/
/
3
3
3
3
2
2
2
2
/
/
/
/
/
/
/
0
0
0
0
1
1
1
1
2
2
2
2
Auto
EnergizeEvaporator
Water Pump Relay
6
/
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66
1
2
/
/
22
2
0
1
2
-
1
2
/
/
22
1
1
/
/
1
2
0
1
2
ConfirmEvaporatorWater
Flow Within 20minutes
(6 Second Filter)
Oil Heaters
Always Energized when
Compressoris De-energized
6
/
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6
1
1
/
/
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/
4
4
4
/
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4
2
2
/
/
/
/
0
W
1
W
2
a
7
/
7
3
/
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/
3
2
2
/
/
0
1
2
EE
a
s
s
d
f
EXV remains closed
Wait for Need
To Cool
(Diff to Start)
9
9
9
9
9
9
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9
9
9
9
9
9
2
2
2
2
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/
/
/
/
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/
2
2
2
2
2
2
2
2
/
/
/
/
/
/
0
0
0
0
1
1
1
1
2
2
2
2
-
1
1
1
1
0
0
0
0
/
/
/
/
/
0
0
0
0
2
2
2
2
/
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/
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/
2
2
2
2
2
2
2
2
/
/
/
/
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/
0
0
0
0
1
1
1
1
2
2
2
2
Auto
9
r
/
9
3
/
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/
3
2
2
2
/
/
0
0
0
1
1
((
2
2
D
D
i
a
s
s
d
f
Call for Cooling**
(Differential to Start is met)
1
1
1
1
0
0
1
1
1
1
0
0
0
1
2
2
0
0
0
0
0
0
0
/
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/
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/
0
0
0
0
0
0
0
1
1
1
1
1
1
/
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/
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//
/
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2
2
2
2
2
2
2
/
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/
/
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/
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/
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2
2
2
2
-
-
1
1
1
1
1
1
0
0
0
0
0
0
0
/
/
/
/
/
/
/
0
0
0
0
0
0
0
3
3
3
3
3
3
3
/
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/
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/
/
/
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/
1
1
1
1
1
1
/
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/
/
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2
2
2
2
2
2
2
/
//
/
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/
/
/
//
0
0
0
0
0
0
0
1
2
2
Waiting
To Start
1
0
/
0
2
/
/
/
2
2
/
/
0
1
2
a
s
d
f
Confirm
PresenceofOil
(0to 90seconds)
1
1
1
1
1
1
0
0
0
0
0
0
0
/
/
/
/
/
/
/
0
0
0
0
0
0
0
3
3
3
3
3
3
3
/
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/
/
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//
0
0
0
0
0
0
0
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/
/
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/
0
0
0
0
0
0
0
2
2
2
2
2
2
2
/
//
/
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/
//
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2
2
2
2
-
-
1
1
1
1
1
1
2
2
2
2
2
2
2
/
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2
2
2
2
2
2
2
1
1
1
1
1
1
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1
1
1
1
1
1
/
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2
2
2
2
2
2
2
/
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/
/
/
/
/
/
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/
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2
2
2
2
Waiting
To Start
1
0
/
0
3
/
/
1
/
2
/
/
0
1
2
a
s
d
f
1
2
/
2
1
/
/
1
/
2
/
/
0
1
2
a
s
d
f
Fans pre-start,EXV
moving to
Preposition
0to25Seconds,Evap
Isolation Valve
Compressor Delay Time
has expired
Send StartCommand
to Lead Compressor*
Transition to
Running
StartControl of
Condenser Fan Flow
Pre-PositionEXVof
Lead Circuit
6
6
6
6
6
6
6
/
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6
6
6
6
6
6
6
6
6
1
1
1
1
1
1
3
3
3
3
3
3
3
/
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/
/
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3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2
2
2
-
-
-
1
1
1
1
1
1
2
2
2
2
2
2
/
/
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/
/
/
/
/
2
2
2
2
2
2
2
1
1
1
1
1
1
0
0
0
0
0
0
0
/
/
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/
/
/
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/
0
0
0
0
0
0
0
0
0
2
2
2
2
2
2
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2
2
2
CheckEvap Pressure for
Low Pressure Cutout
/
6
1
1
1
/
/
4
4
/
/
P
4
2
P
/
/
P
P
P
0
r
1
e
2
P
L