Motor Connection - Trane CLCF Climate Changer Manual

CAUTION! After wiring is complete, ensure that grounding between the fan motor assembly and casing is suitable
for the electrical supply wire. If the unit is provided with an electric heater, interlock the heater contactors with a
normally closed contact to the fan contactors to avoid overheating. Switch off the fan only after leaving sufficient
time after the heater is switched off, to allow it to cool down. Electrical grounding is required between the unit and
the ductwork.
Sound power levels
The fan-motor base is electrically insulated from the rest of the unit and the connections must be made with the
proper section copper wire. In order to warranty electrical continuity between sections, each section must be
Discharge
grounded. Ground bolts are not provided. To ground the unit, use a bolt already on the unit or screw it onto the base.
The operator safety can be ensured by either a belt guard or a factory-mounted micro-switch on the fan section door.
Measurement conditions:
The electrical connection of this micro-switch made by the contactor will cut off the electrical feeding to the motor
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
and stop the fan-motor group when the door of the fan section is opened.
long) fixed to its discharge opening.

Motor connection

Fan
Unit speed
As a safety measure against overload, short circuit, high or low voltage, a faulty connection or phase failure
1
FWD 08 impeding the cooling effect, excessively high ambient temperature, e.g. warmth from external sources, excessive 2
3
braking of the rotor, frequent switching and uncontrolled start up and stop procedures, the use of full motor
1
protection is necessary to protect motor windings. Use thermal protection devices to protect the motor that includes
FWD 10 2
a complete motor protection control system. Only in this manner is the manufacturer's guarantee secured.
3
1
In instances where a motor protection cut out is fitted, the correct power rating for the setting may be noted from the
FWD 12 2
product name plate.
3
1
CAUTION! If motor is equipped with a safety thermistor or similar devices (PTC, PTO, Klixon, etc...), it is mandatory
FWD 14 2
to connect them to protect the motor.
3
1
The connection must be carried out in accordance with the motor nameplate and the wiring diagrams as shown in
FWD 20 2
the inside of the motor terminal box or, generally, in accordance with the wiring diagram as shown in Table 1.
3
Special care should be taken in the connection of motors, especially if multi-speed motors are involved.
Intake
For fan sections equipped with double fans and motors, interlock both motors so that one motor stop command
causes the second motor to stop. Please see the Pre-start checklist section for additional information.
Measurement conditions:
Following the connection of the motor, a test run should be carried out to check the motor performance data. Please
Measurements taken at the horizontal air intake.
refer to the Commissioning Procedure section in this manual.
CAUTION! In the event of motor damage resulting from faulty connection of the motor, we will not accept any
Fan
Unit speed
related claims.
1
Table 1 – Motors with thermistors
FWD 08 2
3
Single speed
1
FWD 10 2
4 poles
3
2 poles
1
FWD 12 2
CAUTION! With a star-delta starter, the motor must start with the star connections for a short period of time
3
(approximately 3 seconds) and then switch to the delta connections. 1
FWD 14 2
3
1
FWD 20 2
3
AH-SVX03C-GB UNT-PRC002-GB
Power level in dB(A), per Hz frequency band
125 250
55 50
57 54
58 57
57 51
58 54
60 58
57 51
58 54
60 58
56 62
61 66
63 69
57 63
61 66
63 69
Power level in dB(A), per Hz frequency band
125 250
56 55
63 62
66 65
62 58
1500 min -1
66 63
70 67
3000 min -1
62 58
66 63
70 67
66 65
73 72
78 76
68 72
76 76
78 79
500 1000 2000
42 37 37
47 40 30
50 42 32
45 42 34
48 45 38
50 48 40
45 42 34
48 45 38
50 48 40
50 48 39
55 53 47
58 56 50
51 49 40
55 53 47
58 56 50
500 1000 2000
55 53 46
60 60 53
63 62 56
55 58 51
60 62 56
63 65 59
55 58 51
60 62 56
63 65 59
65 65 57
69 71 64
73 75 69
64 64 56
68 71 65
71 74 69
Installation
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
15