Evaporator Piping - Trane Sintesis Advantage CGAF Series Installation Operation & Maintenance

Evaporator water connections are grooved. Thoroughly
flush all water piping to the unit before making the final
piping connections to the unit.
Components and layout will vary slightly, depending on
Sound power levels
the location of connections and the water sources.
Discharge
CAUTION Equipment Damage! If using an acidic
commercial flushing solution, construct a temporary
Measurement conditions:
bypass around the unit to prevent damage to internal
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
components of the evaporator.
long) fixed to its discharge opening.
CAUTION Proper Water Treatment! The use of untreated
Fan
or improperly treated water in a chiller may result
Unit speed
in scaling, erosion, corrosion, algae or slime. It is
1
recommended that the service of a qualified water
FWD 08 2
3
treatment specialist be engaged to determine what
1
water treatment, if any, is required. Trane assumes
FWD 10 2
no responsibility for equipment failures which results
3
1
from untreated or improperly treated water or saline or
FWD 12 2
brackish water.
3
1
Drainage
FWD 14 2
3
Locate the unit near a large capacity drain for water
1
FWD 20 vessel draining down during shutdown or repair. 2
3
Condensers and evaporators are provided with drain
connections. Refer to "Water Piping. " All local and
Intake
national codes apply.
Measurement conditions:
Water Treatment
Measurements taken at the horizontal air intake.
In the evaporator the following material are in contact
Fan
with water:
Unit speed
• Plate material: AISI 316 EN 10028-7 - 1.4401
1
FWD 08 2
3
• Connection: AISI 316 EN 10272 -
1
FWD 10 2
3
• Braze alloy: EN-13388, ISO Copper CU-HCP
1
FWD 12 2
In Shell and Tube evaporator the following material are
3
in contact with water:
1
FWD 14 2
• Copper tube
3
• Carbon steel
1
FWD 20 2
• Polypropylene baffles
3
• EPDM rubber gaskets on baffles
• Stainless steel rivets
• Tie rod in carbon steel with galvanized finish
For the heater, the copper ring gasket's.
When the unit is supplied with hydraulic module, the
following additional materials are in contact with water:
p frame and connections are made of cast
• Pum
iron
• Water pipes are made of carbon steel
• Pipe sealings are made of EPDM rubber
(ethylene propylene diene monomer rubber)
• Pump sealings are made of silicon carbide
• Straine
r is made of stainless steel
CG-SVX039B-GB UNT-PRC002-GB
Power level in dB(A), per Hz frequency band
125 250
55 50
57 54
58 57
57 51
58 54
60 58
57 51
58 54
60 58
56 62
61 66
63 69
57 63
61 66
63 69
Power level in dB(A), per Hz frequency band
125 250
56 55
+2B/2R
63 62
66 65
62 58
1.4401/1.4404/1.4435/1.4436 - 1E
66 63
70 67
62 58
66 63
70 67
66 65
73 72
78 76
68 72
76 76
78 79
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
determination and in the establishment of a proper water
500 1000 2000
treatment program.
42 37 37
47 40 30
If calcium chloride is used for water treatment, an
50 42 32
45 applicable corrosion inhibitor must also be used. Failure 42 34
48 45 38
to do so may result in damage to system components.
50 48 40
Do not use untreated or improperly treated water.
45 42 34
48 45 38
50 48 40
Equipment damage may occur.
50 48 39
55 53 47
Piping
58 56 50
51 49 40
Piping components include all devices and controls
55 53 47
used to provide proper water system operation and
58 56 50
unit operating safety. A typical CGAF / CXAF evaporator
piping is shown below.
Figure 4 – Unit typical water circuit
500 1000 2000
55 53 46
60 60 53
63 62 56
55 58 51
60 62 56
63 65 59
55 58 51
60 62 56
63 65 59
65 65 57
69 71 64
73 75 69
64 64 56
68 71 65
71 74 69
1 = Pressure gauges: show entering and leaving water
pressure
2 = Balancing valve: adjusts water flow.
3 = Air purge allows to remove the air from the water
circuit during fill up.
4 = Stop valves: isolate chillers and water circuiting
pump during maintenance operations.
5 = Thermometers: indicate chilled water entering and
leaving temperatures.
6 = Expansion compensators: avoid mechanical stress
between chiller and piping installation.
7 = Stop valve located on the outlet connection: used
to measure the water pressure inlet or outlet of
evaporator.

Evaporator Piping

4000 8000
31 30
38 40
40 43
33 28
39 35
42 39
33 28
39 35
42 39
38 36
46 45
50 49
39 37
46 45
50 49
4000 8000
45 42
53 53
55 57
48 44
55 52
59 57
48 44
55 52
59 57
50 46
59 57
64 63
52 50
61 61
66 66
Overall power
dB(A)
46
50
53
48
51
54
48
51
54
56
60
63
57
60
63
Overall power
dB(A)
57
64
67
61
66
69
61
66
69
68
74
78
69
75
78
11
31