Trane CLCF Climate Changer Manual page 23

Vibration isolators
… Check that vibration isolators are free to operate and that there is no contact existing between the fan/motor
chassis and the support.
Frequency inverter
Sound power levels
1. The VFD must be compatible with HVAC applications, such as fans with quadratic torque.
2. The electric power output of the VFD shall be compatible with the nominal power of the motor.
Discharge
3. The VFD shall be compatible with its environment (IP rate, type of ventilation, ambient temperature,
electromagnetic environment...)
Measurement conditions:
4. All recommendations indicated in the Installation/Operation/Maintenance manual of the VFD manufacturer must
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
be respected.
long) fixed to its discharge opening.
5. The VFD comes with default values which may have to be fine- tuned during commissioning.
Fan
CAUTION!
Unit speed
In some cases, mechanical issues my affect the fan or motor, and may be caused by the inverter settings (vibration,
1
FWD 08 2
excessive noise, lower efficiencies, motor overheating...). If the inverter is removed and the mechanical issues do
3
not persist, the inverter settings must be reconfigured. Inverter settings to verify can include: attenuated resonance,
1
quadratic torque, frequency regulation, etc.
FWD 10 2
3
Unit connections
1
FWD 12 2
All electrical, water, and duct work connections of the unit must be completed by a qualified person.
…
3
Check that electrical connections comply with the wiring diagram and that the thermal protection is operational.
…
1
FWD 14 2
Completely stress-free connections are essential.
…
3
… The pipe work of the coils should be arranged to facilitate easy removal of the coil for maintenance purposes.
1
FWD 20 2
Coils
3
Check that the coil connections and valves are not leaking. If there are leaks, rectify the problem.
…
Intake
Cooling coil sections are fitted with condensate drains. Check that these are properly fitted to allow draining and
…
avoid air suction and water carry-over.
Measurement conditions:
Water coil filling
Measurements taken at the horizontal air intake.
In general, heating and cooling coils are filled with water and standard additives to protect against freezing and
corrosion:
Fan
Unit speed
• open the air vent
1
• slightly open the water supply valve so that the heater battery fills slowly. This avoids thermal stress
FWD 08 2
3
• as soon as the heater coil is full, close the air vent
1
• open the water valve fully and switch on the fan
FWD 10 2
• finally, the entire piping system must be completely vented.
3
1
Steam coil filling
FWD 12 2
• Open gradually the air vent and drain valve on the condensate drain
3
1
• Slightly open the steam valve until steam penetrates through the condensate drain valve and air vent
FWD 14 2
• Close the condensate drain valve and air vent and open the steam valve fully
3
• Vent regularly during operations
1
FWD 20 2
CAUTION! If the installation is switched off temporarily, condensate must not be stopped temporarily to remain in
3
the pipes to avoid freezing and corrosion risk.
For steam, overheated, high temperature coils, to prevent overheating inside the unit, the fan stop must be delayed
by 3 to 5 minutes after the steam valve have been closed.
Electrical heaters
Electric air heaters are provided with automatic and/or manual reset overheat thermostats.
CAUTION! To prevent over heating inside the unit when the heater is being switched off, the fan maybe switched off
after an over run period of 3 to 5 minutes.
The same shall be done when the unit is installed any other type of high temperature source.
AH-SVX03C-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
Commissioning procedure
1000 2000 4000
37 37 31
40 30 38
42 32 40
42 34 33
45 38 39
48 40 42
42 34 33
45 38 39
48 40 42
48 39 38
53 47 46
56 50 50
49 40 39
53 47 46
56 50 50
1000 2000 4000
53 46 45
60 53 53
62 56 55
58 51 48
62 56 55
65 59 59
58 51 48
62 56 55
65 59 59
65 57 50
71 64 59
75 69 64
64 56 52
71 65 61
74 69 66
Overall power
8000 dB(A)
30 46
40 50
43 53
28 48
35 51
39 54
28 48
35 51
39 54
36 56
45 60
49 63
37 57
45 60
49 63
Overall power
8000 dB(A)
42 57
53 64
57 67
44 61
52 66
57 69
44 61
52 66
57 69
46 68
57 74
63 78
50 69
61 75
66 78
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