RLC-SVX023A
45
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
Maintenance Procedures
Refrigerant Charge
If a low refrigerant charge is suspected, first determine
the cause of lost refrigerant. Once the problem is
repaired follow the procedures below for evacuating
and charging the unit.
Refrigerant recovery
1. Insure that the water flow is maintained on condenser
and evaporator during all the recovery operation.
2. Connections on evaporator and condenser are
available to remove the refrigerant. Weigh the
refrigerant removed.
CAUTION !
Never recover refrigerant without maintaining nominal
water flow on heat exchangers during all the recovery
operation. Evaporator or condenser could freeze and
bringing severe damages to the unit.
3. Use a “refrigerant transfer machine” and adequate
service cylinders to stock the recovered refrigerant.
4. According to its quality, use recovered refrigerant to
charge the unit or give it to refrigerant producer for
recycling or elimination.
Evacuation and Dehydration
1. Disconnect ALL power before/during evacuation.
2. Connect the vacuum pump to the ½’’ service valves on
the oil separator and on the liquid line.
3. To remove all of the moisture from the system and to
insure a leak free unit, pull the system down below
500 microns.
4. After the unit is evacuated, perform a standing rise
test for at least an hour. The pressure should not rise
more than 150 microns. If the pressures rises more
than 150 microns, either a leak is present or moisture
still in the system.
NOTE:
If oil is in the system, this test is more difficult.
The oil is aromatic and will give off vapors that will raise
the pressure of the system.
Refrigerant Charging
Once the system is deemed leak and moisture free,
use the ½’’ service valves at the top of the oil separator
and on the liquid line, after the expansion valve.
Refer to Table 1 and unit nameplate for refrigerant
charge information.
