Trane RTAF-SVX001K-EN - Running (Lag Compr;Circuit Start - Run)

Start-Up and Shutdown
RTAF-SVX001K-EN 65
Running (Lag Compr/Circuit Start - Run)
The figure below shows a typical start and run sequence
for the lag compressor and its circuit.
Figure 43. Sequence of operation: running (lag compressor/circuit start nd run)
*Note:Thedecisiontostageonoroffanothercompressorisdeterminedby
the Average Running Compressor Load Command,Water Temperature Error,and Time Since Last Stage
All
Compressors
Running
Chiller and Both Circuit
Modes are “Running”
Modulate
Compressorfor
Capacity Control
De-energize
Oil Heaters
Of Lag Circuit
Control Both Circuit
Condenser Fans for
OptimumDifferential
Pressure,
ƒ(Cprsr Spd,OA Temp)
6
6
/
/
/
/
6
6
6
6
6
6
1
1
1
2
2
2
/
/
/
/
22
22
22
2
2
2
0
0
0
1
1
1
2
2
2
-
1
1
1
2
2
2
/
/
/
/
2
2
2
2
2
2
1
1
1
1
1
1
/
/
/
/
1
1
1
2
2
2
0
0
0
1
1
1
2
2
2
Enforce All Running ModeDiagnostics for Chiller,Lead Compressor and its Circuit
Modulate
Compressor
for Limit
Control
Modulate Compressor
for
Capacity Control
/
/
/
/
6
6
6
1
1
1
/
/
/
/
/
/
2
2
2
/
/
/
/
2
2
2
2
2
2
/
/
/
/
/
0
0
0
1
1
1
2
2
2
-
7
7
7
/
/
/
/
7
7
7
2
2
2
/
/
/
/
/
4
4
4
/
/
/
/
4
4
4
2
2
2
/
/
/
/
/
0
0
0
1
1
1
2
2
2
Running
6
/
6
6
1
3
/
/
33
2
0
1
2
7
7
7
/
/
/
/
/
/
/
7
7
7
2
2
2
2
2
/
/
/
/
/
/
/
3
3
3
/
/
/
/
3
3
3
2
2
2
/
/
/
/
/
0
0
0
1
1
1
2
2
2
-
8
8
8
/
/
/
/
8
8
8
1
1
1
/
/
/
/
/
/
4
4
4
/
/
/
/
4
4
4
2
2
2
/
/
/
/
/
Running
7
/
7
7
2
4
2
2
/
44
2
0
1
2
6
/
/
/
66
1
1
1
1
1
1
3
3
3
3
/
/
/
/
/
3
3
3
3
3
2
2
2
2
2
2
2
2
0
0
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2
2
2
M
i
l
e
s
t
ss
o
n
n
n
n
n
n
e
e
e
e
D
D
D
D
e
e
e
e
e
e
e
e
e
e
D
D
D
D
D
D
D
DD
s
s
s
s
c
c
c
c
s
s
s
s
s
s
r
r
r
r
i
i
i
i
i
p
p
p
p
p
t
t
t
t
p
p
p
p
p
i
i
i
i
i
o
o
o
o
n
n
n
n
Exit
LimitMode
Enter
LimitMode
0
0
0
/
/
/
/
0
0
0
2
2
2
/
/
/
/
/
8
8
8
/
/
/
/
8
8
8
2
2
2
/
/
/
/
/
0
0
0
1
1
1
2
2
2
-
1
1
1
2
2
2
/
/
/
/
2
2
2
1
1
1
/
/
/
/
/
/
1
1
1
/
/
/
/
2
2
2
/
/
/
/
/
0
0
0
1
1
1
2
2
2
Running
EnergizeMaximum
Capacity Relay after the
Adjustable Filter Time
(0 to 1500 Seconds)
Continue
Running
(All
Cprsrs &
Max
Capacity
Maximum Capacity
Submode
9
9
9
/
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/
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9
9
9
1
1
1
/
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/
/
/
/
1
1
1
/
/
/
/
2
2
2
/
/
/
/
/
0
0
0
1
1
1
2
2
2
-
1
1
1
0
0
0
/
/
/
/
0
0
0
3
3
3
/
/
/
/
/
0
0
0
/
/
/
/
0
0
0
2
2
2
/
/
/
/
/
0
0
0
1
1
1
2
2
2
Running
8
/
/
/
8
1
/
/
3
/
/
/
3
2
/
/
0
1
2
-
9
/
/
/
9
1
/
/
1
/
/
/
2
/
/
0
0
0
1
1
2
Running
Lag Circuit:
Running Limit
9
/
99
1
1
/
/
1
2
0
1
2
8
/
8
8
1
3
/
/
33
2
0
1
2
1
1
1
o
r
0
0
0
r
/
/
/
0
0
0
0
3
0
0
/
/
00
2
0
1
2
2
2
All Compressors Running
At or Near Max Capacity
(Unable to Achieve CWSP)
Modulate EXV for
Pressure Control