Trane GVAF Series Installation Operation & Maintenance page 45

4. Turn power on by closing the unit supply-power fused-
disconnect switch.
5. Read the phase sequence on the indicator. The ABC LED
of the phase indicator will glow.
Sound power levels
CAUTION! Humidity : Do not leave compressor
uncovered
Discharge
If the compressor is installed in a humid environment, drip
trays may be required to collect condensate. Insulation
Measurement conditions:
should be installed on the suction valve/piping and the end
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
cap as this is where condensation is most likely to form.
long) fixed to its discharge opening.
It is recommended to fit an end cap insulator in a humid
environment.
Fan
Unit speed
In humid environments, the bell housing of the compressor
1
should be insulated. A bell housing cover thermal insulator
FWD 08 2
3
is available as a compressor accessory.
1
FWD 10 2
WARNING! It is imperative that L1, L2, and L3 in the starter
3
be connected in the A-BC phase sequence to prevent
1
equipment damage due to reverse rotation.
FWD 12 2
3
WARNING!To prevent injury or death due to electrocution,
1
take extreme care when performing service procedures with
FWD 14 2
electrical power energized.
3
1
CAUTION! Do not interchange any load leads that are from
FWD 20 2
the unit contactors or the motor terminals. Doing so may 3
damage the equipment.
Intake
Water System Flow Rates
Measurement conditions:
Measurements taken at the horizontal air intake.
Establish a balanced chilled-water flow through the
evaporator. The flow rates should be between the
Fan
minimum and maximum values given on the pressure
Unit speed
drop curves.
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
CTV-SVX009D-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
Water System Pressure Drop
Measure the water-pressure drop through the evaporator
on the field installed pressure taps on the system water
piping. Use the same gauge for each measurement. Do
not include valves, strainers, or fittings in the pressure
drop readings.
Integrated Pump Package (Optional)
Before starting up the pump, the pipe system must be
thoroughly cleaned, flushed and filled with clean water.
Do not start the pump until it has been vented. To ensure
correct venting, open the vent screw located on the
pump housing on the suction side (see next figure).
1000 2000
37 37
40 30
CAUTION! When using freeze inhibitor, never fill the
42 32
system with pure glycol; this will damage the shaft seal.
42 34
Always fill the system with diluted solution. Maximum
45 38
concentration of glycol is 45% for unit with pump
48 40
42 34
package.
45 38
48 40
48 39
If the chiller is installed in a humid environment or a
53 47
location with high air humidity, the bottom drain hole
56 50
on the pump motor should be opened. The enclosure
49 40
class of the motor is then changed from IP55 to IP44. The
53 47
function of the drain holes is to drain off water which has
56 50
entered the stator housing with air humidity.
Figure 22 – Pump Package
B
B
F
1000 2000
53 46
60 53
62 56
58 51
62 56
65 59
58 51
62 56
C
65 59
65 57
C
71 64
75 69
64 56
71 65
A = Pump vent screw
74 69
D= Drain and fill valve
B = Air vent valve
= Pump drain plug
C = Drain valve
= Motor drain hole plug
Pre-Start Checkout
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
F
A
Overall power
A
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
E E D
64 63 78
52 50 69
61 61 75
66 66 78
E
F
11
45