RLC-SVX023A
27
11
UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan
Power level in dB(A), per Hz frequency band
Overall power
Unit
speed
125
250
500
1000
2000
4000
8000
dB(A)
1
55
50
42
37
37
31
30
46
FWD 08
2
57
54
47
40
30
38
40
50
3
58
57
50
42
32
40
43
53
1
57
51
45
42
34
33
28
48
FWD 10
2
58
54
48
45
38
39
35
51
3
60
58
50
48
40
42
39
54
1
57
51
45
42
34
33
28
48
FWD 12
2
58
54
48
45
38
39
35
51
3
60
58
50
48
40
42
39
54
1
56
62
50
48
39
38
36
56
FWD 14
2
61
66
55
53
47
46
45
60
3
63
69
58
56
50
50
49
63
1
57
63
51
49
40
39
37
57
FWD 20
2
61
66
55
53
47
46
45
60
3
63
69
58
56
50
50
49
63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan
Power level in dB(A), per Hz frequency band
Overall power
Unit
speed
125
250
500
1000
2000
4000
8000
dB(A)
1
56
55
55
53
46
45
42
57
FWD 08
2
63
62
60
60
53
53
53
64
3
66
65
63
62
56
55
57
67
1
62
58
55
58
51
48
44
61
FWD 10
2
66
63
60
62
56
55
52
66
3
70
67
63
65
59
59
57
69
1
62
58
55
58
51
48
44
61
FWD 12
2
66
63
60
62
56
55
52
66
3
70
67
63
65
59
59
57
69
1
66
65
65
65
57
50
46
68
FWD 14
2
73
72
69
71
64
59
57
74
3
78
76
73
75
69
64
63
78
1
68
72
64
64
56
52
50
69
FWD 20
2
76
76
68
71
65
61
61
75
3
78
79
71
74
69
66
66
78
Operating Principles Mechanical
This section contains an overview of the operation
and maintenance of RTSF chillers equipped with
microcomputer-based control systems. It describes the
overall operating principles of the design. Following
the section is information regarding specific operating
instructions, detailed descriptions of the unit controls
and options and maintenance procedures that must be
performed regularly to keep the unit in top condition.
Diagnostic information is provided to allow the operator
to identify system malfunctions.
Note:
To ensure proper diagnosis and repair, contact a
qualified service organization if a problem should occur.
General
The unit is mono compressor, single circuit, water-
cooled liquid chillers. These units are equipped with unit
mounted starter/control panels. The basic components
of RTSF unit are:
• Unit-mounted panel containing starter and Tracer
UC800 controller and Input/output LLIDS
• Helical-rotary compressor
• Evaporator
• Electronic expansion valve
• Water-cooled condenser
• Oil supply system
• Oil cooler (application dependent)
• Related interconnecting piping
• AFD (Adaptive Frequency Drive)
Refrigeration (Cooling) Cycle
The refrigeration cycle of the chiller is conceptually
similar to that of other Trane chiller products. It makes
use of a BPHE evaporator.
The compressor is a twin-rotor helical-rotary type. It
uses a suction gas-cooled motor that operates at lower
motor temperatures under continuous full- and part-
load operating conditions. An oil management system
provides oil-free refrigerant to the BPHE to maximize
heat transfer performance, while providing lubrication
and rotor sealing to the compressor. The lubrication
system ensures long compressor life and contributes to
quiet operation.
Condensing is accomplished in BPHE.
Refrigerant is metered through the flow system using
an electronic expansion valve that maximizes chiller
efficiency at part load.
A unit-mounted starter AFD and control panel is
provided on every chiller. Microprocessor-based unit
control modules (Tracer UC800) provide for accurate
chilled BPHE water control as well as monitoring,
protection and adaptive limit functions. The “adaptive”
nature of the controls intelligently prevents the chiller
from operating outside of its limits, or compensates for
unusual operating conditions, while keeping the chiller
running rather than simply tripping due to a safety
concern. When problems do occur, diagnostic messages
assist the operator in troubleshooting.
