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Electrical bridging for setting
Figure 7 - Flow rate to setting duration slider
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
Moving the flow switch out
Unit
speed
1
FWD 08
2
In case that the setup is not fully satisfactory, the flow
3
switch can be relocated outside of the unit on straight
1
horizontal pipe and still on the water exchanger inlet.
FWD 10
2
Make sure that pipe diameter is large enough to fit the
3
1
desired detection flow rate. Refer to Table 7 for maximum
FWD 12
2
detection flow rate according pipe diameter.
3
1
Note: The flow-switch coupling is quite specific due to
FWD 14
2
the full thread immersion. Usual standard couplings
3
cannot fit, contact Trane service representative for
1
FWD 20
ordering the right parts.
2
3
The flow switch coupling can also be made from a
standard AINSI B1.20.1 ½ NPT coupling.
Intake
Turn 3 time a ½ NPT tap to enlarge the thread and cut its
Measurement conditions:
length the specified dimension.
Measurements taken at the horizontal air intake.
Then it is possible to drill the pipe and weld it on.
Figure 8 – Coupling recommendations.
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
* on thread diameter
** minimum recommended
** on fingertip tighting prior to wrench thighting
CG-SVX051A-GB
UNT-PRC002-GB
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
Chilled/hot water Piping
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
1000
2000
mark which is visible on the hexagonal flat shall face
37
37
up the flow direction (Figure 8).
40
30
42
32
Contact a Trane service representative in case of
42
34
persistent nuisances.
45
38
48
40
Figure 9 - Flow switch straight lengths
42
34
45
38
48
40
48
39
53
47
56
50
49
40
53
47
56
50
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
33
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