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
29
Installation Requirements
result in unit dropping and possibly crushing operator/
technician which could result in death or serious injury.
WARNING! Improper Unit Lift!
Test lift unit
approximately 10 cm to verify proper center of gravity
lift point. To avoid dropping of unit, reposition lifting
point if unit is not level. Failure to properly lift unit could
result in unit dropping and possibly crushing operator/
technician which could result in death or serious injury
and possible equipment or property- only damage.
Dimension and Weights
Dimensions details, dimensions of hydraulic
connections, electrical connections, isolator positioning,
specific features for heat recovery and free cooling
are included in submittals and diagrams provided in
documentation package.
Center of Gravity
See instructions on lifting drawings available on request.
Unit Isolation and Leveling
Provide a foundation with sufficient strength and mass
to support the unit operating weight (that is, including
completed piping, full operating charges of refrigerant
and oil, and water). Refer to unit operating weights.
The unit must be leveled within 5 mm over its length
and width. Use shims as necessary to level the unit. For
additional reduction of sound and vibration, install the
optional elastomeric isolators.
Elastomeric Isolators Installation
(Optional)
Isolators are ready to install. Mountings have to
be placed on a rigid and level foundation. External
equipment should not transmit additional vibration
to the unit. The position of elastomeric isolator and
weight per point are given in the Neoprene isolators
installation drawing which is supplied with the unit.
Wrong placement along the unit may result in excessive
deflection.
1. Secure the isolators to the mounting surface using
the mounting slots in the isolator’s base plate. Do
NOT fully tighten the isolators mounting bolts at
this time. See the isolators submittals for isolators
location, maximum weights, and isolators diagrams.
2. Align the mounting holes in the base of the unit
with the threaded positioning pins on the top of the
isolators.
3. Install the unit on the isolators and secure the
isolators to the unit with a nut. The maximum
isolators deflection should be 13 mm.
4. Level the unit carefully. Fully tighten the isolator
mounting bolts.
Figure 3 - Elastomeric Isolator
Isolator Pads Installation (Optional)
Isolators are ready to install. Mountings have to
be placed on a rigid and level foundation. External
equipment should not transmit additional vibration to
the unit. The position of pads isolator is given in the
pad isolators installation or selection drawing which is
supplied with the unit.
Figure 4 - Isolator pads
