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Drainage
A large capacity drain must be provided for water vessel
drain-down during shutdown or repair. The evaporator is
provided with drain connections. An air vent on top of the
Sound power levels
evaporator water box prevents vacuum by removing air
from evaporator for complete drainage.
Discharge
Water Treatment
Measurement conditions:
In the evaporator the following material are in contact
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
with water:
long) fixed to its discharge opening.
• Water boxes are made of cast iron (GJL250 EN-code)
Fan
• Tube plates are made of steel (P265GH code)
Unit
speed
• Tubes are made of copper
1
FWD 08
2
• Turbulators when present in evaporator tubes are made
3
of phosphorous brass.
1
FWD 10
2
When the unit is supplied with hydraulic module, the
3
following additional materials are in contact with water:
1
FWD 12
2
• Pump frame and connections are made of cast iron
3
• Water pipes are made of iron
1
FWD 14
2
• Pipe sealings are made of EPDM rubber (ethylene
3
propylene diene monomer rubber)
1
FWD 20
2
• Pump sealings are made of silicon carbide
3
• Strainer is made of stainless steel
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan
Unit
speed
1
FWD 08
2
3
1
FWD 10
2
3
1
FWD 12
2
3
1
FWD 14
2
3
1
FWD 20
2
3
RLC-SVX19E-GB
UNT-PRC002-GB
Chilled Water Piping Recommendations
Power level in dB(A), per Hz frequency band
125
250
500
55
50
42
57
54
47
58
57
50
57
51
45
58
54
48
60
58
50
57
51
45
58
54
48
60
58
50
56
62
50
61
66
55
63
69
58
57
63
51
61
66
55
63
69
58
Power level in dB(A), per Hz frequency band
125
250
500
56
55
55
63
62
60
66
65
63
62
58
55
66
63
60
70
67
63
62
58
55
66
63
60
70
67
63
66
65
65
73
72
69
78
76
73
68
72
64
76
76
68
78
79
71
Dirt, scale, products of corrosion, and other foreign
material will adversely affect heat transfer between the
water and system components. Foreign matter in the
chilled-water system can also increase pressure drop and
consequently, reduce water flow. Proper water treatment
must be determined locally, depending on the type of
system and local water characteristics.
Neither salt nor brackish water is recommended for use
in Trane air-cooled chillers. Use of either will lead to an
unpredictably shorter life cycle. Trane encourages the
employment of a reputable water treatment specialist,
familiar with local water conditions, to assist in this
1000
2000
determination and in the establishment of a proper water
37
37
40
30
treatment program.
42
32
42
34
CAUTION! If using an acidic commercial flushing
45
38
48
40
solution, construct a temporary bypass around the
42
34
unit to prevent damage to internal components of
45
38
the evaporator. Trane assumes no responsibility for
48
40
48
39
equipment failures which results from untreated or
53
47
improperly treated water or saline or brackish water.
56
50
If calcium chloride is used for water treatment, an
49
40
applicable corrosion inhibitor must also be used. Failure
53
47
56
50
to do so may result in damage to system components. Do
not use untreated or improperly treated water. Equipment
damage may occur.
1000
2000
53
46
60
53
62
56
58
51
62
56
65
59
58
51
62
56
65
59
65
57
71
64
75
69
64
56
71
65
74
69
Overall power
4000
8000
dB(A)
31
30
46
38
40
50
40
43
53
33
28
48
39
35
51
42
39
54
33
28
48
39
35
51
42
39
54
38
36
56
46
45
60
50
49
63
39
37
57
46
45
60
50
49
63
Overall power
4000
8000
dB(A)
45
42
57
53
53
64
55
57
67
48
44
61
55
52
66
59
57
69
48
44
61
55
52
66
59
57
69
50
46
68
59
57
74
64
63
78
52
50
69
61
61
75
66
66
78
11
51
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