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
CG-SVX051A-GB
33
Electrical bridging for setting
Figure 7 - Flow rate to setting duration slider
Moving the flow switch out
In case that the setup is not fully satisfactory, the flow
switch can be relocated outside of the unit on straight
horizontal pipe and still on the water exchanger inlet.
Make sure that pipe diameter is large enough to fit the
desired detection flow rate. Refer to Table 7 for maximum
detection flow rate according pipe diameter.
Note:
The flow-switch coupling is quite specific due to
the full thread immersion. Usual standard couplings
cannot fit, contact Trane service representative for
ordering the right parts.
The flow switch coupling can also be made from a
standard AINSI B1.20.1 ½ NPT coupling.
Turn 3 time a ½ NPT tap to enlarge the thread and cut its
length the specified dimension.
Then it is possible to drill the pipe and weld it on.
Figure 8 – Coupling recommendations.
* on thread diameter
** minimum recommended
** on fingertip tighting prior to wrench thighting
1. Use the special ½” NPT coupling with enlarged
thread for full rod immersion and plug the factory
½” NPT coupling instead.
2. Mount the flow switch upright on the entering water
pipe. The pipe shall be straight horizontal with 10
and 6 outer diameters (OD) length respectively
upstream and downstream the flow switch (Figure
9).
3. Use only a correctly-sized spanner (or torque
wrench) to fasten the sensor. Tightening torque max.
100 Nm or ANSI B1.20.1.
4. The full rod of the sensor, end to thread shall be
inserted into the inner pipe diameter and the dot
mark which is visible on the hexagonal flat shall face
up the flow direction (Figure 8).
Contact a Trane service representative in case of
persistent nuisances.
Figure 9 - Flow switch straight lengths
Chilled/hot water Piping
Ø20,2±0,1*
1/2 NPT
15
Ø 29
Ø22**
38±2***
