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Evaporator Piping Components
Note: Make sure all piping components are between the
shutoff valves, so that isolation can be accomplished
on both the condenser and the evaporator. "Piping
Sound power levels
components" include all devices and controls used
to provide proper water system operation and unit
Discharge
operating safety. These components and their general
locations are given below.
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
Entering Chilled Water Piping
long) fixed to its discharge opening.
• Air vents (to bleed air from system)
Fan
• Water pressure gauges with shutoff valves
Unit
speed
• Pipe unions
1
FWD 08
2
• Vibration eliminators (rubber boots)
3
1
• Shutoff (isolation) valves
FWD 10
2
• Thermometers
3
1
• Clean out tees
FWD 12
2
3
• Pipe strainer
1
FWD 14
2
3
Leaving Chilled Water Piping
1
• Air vents (to bleed air from system)
FWD 20
2
3
• Water pressure gauges with shutoff valves
• Pipe unions
Intake
• Vibration eliminators (rubber boots)
Measurement conditions:
• Shutoff (isolation) valves
Measurements taken at the horizontal air intake.
• Thermometers
• Clean out tees
Fan
Unit
speed
• Balancing valve
1
FWD 08
2
• Pressure relief valve
3
To prevent evaporator damage, do not exceed 10 bar
1
evaporator water pressure for standard units.
FWD 10
2
3
To prevent heat exchangers damage, install a strainer
1
in the evaporator water inlet piping.
FWD 12
2
3
1
FWD 14
2
3
1
FWD 20
2
3
UNT-PRC002-GB
RLC-SVX023A
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
Installation - Mechanical
Condenser Piping Components
"Piping components" include all devices and controls
used to provide proper water system operation and unit
operating safety. These components and their general
locations are given below.
Entering Condenser Water Piping
• Air vents (to bleed air from system)
• Water pressure gauges with shutoff valves
• Pipe unions
• Vibration eliminators (rubber boots)
• Shutoff (isolation) valves
1000
2000
• Thermometers
37
37
• Clean out tees
40
30
42
32
• Pipe strainer
42
34
45
38
• Flow switch
48
40
Leaving Condenser Water Piping
42
34
45
38
• Air vents (to bleed air from system)
48
40
48
39
• Water pressure gauges with shutoff valves
53
47
• Pipe unions
56
50
49
40
• Vibration eliminators (rubber boots)
53
47
• Shutoff (isolation) valve
56
50
• Thermometers
• Clean out tees
• Balancing valve
• Pressure relief valve
To prevent condenser damage, do not exceed 10 bar
water pressure for standard units.
1000
2000
To prevent heat exchangers damage, install a strainer in
53
46
60
53
condenser water inlet piping.
62
56
58
51
Water Pressure Gauges and
62
56
65
59
Thermometers
58
51
62
56
65
59
Install field-supplied thermometers and pressure gauges
65
57
(with manifolds, whenever practical). Locate pressure
71
64
gauges or taps in a straight run of pipe; avoid placement
75
69
64
56
near elbows, etc. Be sure to install the gauges at the
71
65
same elevation on each shell if the shells have opposite-
74
69
end water connections.
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
13
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