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Installation Checklist
Complete this checklist as the unit is installed, and verify
that all recommended procedures are accomplished
before the unit is started. This checklist does not replace
Sound power levels
the detailed instructions given in the "Installation
Mechanical" and "Installation Electrical" sections of
Discharge
this manual. Read both sections completely, to become
familiar with the installation procedures, prior beginning
Measurement conditions:
the work.
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
General
long) fixed to its discharge opening.
When installation is complete, before starting the unit,
Fan
the following prestart procedures must be reviewed and
Unit
speed
verified:
1
FWD 08
2
1.
Inspect all wiring connections in the compressor
3
1
power circuits (disconnects, terminal block,
FWD 10
2
contactors, compressor junction box terminals and
3
so forth) to ensure they are clean and tight.
1
FWD 12
2
2.
Open all refrigerant valves in the discharge, liquid,
3
and oil return lines.
1
3.
Check the power-supply voltage to the unit at the
FWD 14
2
main-power fused-disconnect switch. Voltage must
3
1
be within the voltage use range and also stamped
FWD 20
2
on the unit nameplate. Voltage fluctuation must not
3
exceed 10%.Voltage imbalance must not exceed 2%
4.
Check the unit power phasing L1-L2-L3 in the starter
Intake
to ensure that it has been installed in a "A-B-C" phase
sequence.
Measurement conditions:
5.
Fill the evaporator chilled-water circuit. Vent the
Measurements taken at the horizontal air intake.
system while it is being filled. Open the vents on
the top of the evaporator water box while filling and
Fan
Unit
speed
close when filling is completed.
1
6.
Close the fused-disconnect switch(es) that supplies
FWD 08
2
power to the chilled-water pump starter.
3
7.
Start the chilled-water pump to begin circulation of
1
FWD 10
2
the water. Inspect all piping for leakage and make
3
any necessary repairs.
1
8.
With water circulating through the system, adjust
FWD 12
2
3
the water flow and check the water pressure drop
1
through the evaporator.
FWD 14
2
9.
Adjust the chilled-water flow switch for proper
3
operation.
1
FWD 20
2
10. Reapply power to complete the procedures
3
11. Prove all Interlock and Interconnecting Wiring
Interlock and External as described in the Electrical
Installation section.
12. Check and set, as required, all UC800 TD7 menu
items.
13. Stop the chilled-water pump.
14. Energize the compressor and oil separator heaters
24 hours, prior to unit start up.
RLC-SVX19E-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
Pre-Start Checkout
Unit Voltage Power Supply
Unit voltage must meet the criteria given in the
installation Electrical Section. Measure each lead of
the supply voltage at the main power fused-disconnect
switch for the unit. If the measured voltage on any lead
is not within the specified range, notify the supplier of
the power and correct the situation before operating the
unit.
Unit Voltage Imbalance
Excessive voltage imbalance between the phases of a
three-phase system can cause motors to overheat and
eventually fail. The maximum allowable unbalance is
1000
2000
37
37
2%. Voltage imbalance is determined using the following
40
30
calculations:
42
32
42
34
% Imbalance = [(Vx – Vave) x 100/Vave]
45
38
48
40
42
34
Vave = (V1 + V2 + V3)/3
45
38
48
40
48
39
Vx = phase with greatest difference from Vave (without
53
47
regard to the sign)
56
50
49
40
Unit Voltage Phasing
53
47
56
50
It is important that proper rotation of the compressors
be established before the unit is started. Proper motor
rotation requires confirmation of the electrical phase
sequence of the power supply. The motor is internally
connected for clockwise rotation with the incoming
power supply phases A-B-C.
1000
2000
When rotation is clockwise, the phase sequence is
53
46
usually called "ABC" , when counterclockwise "CBA"
60
53
62
56
58
51
This direction may be reversed by interchanging any two
62
56
of the line wires.
65
59
58
51
1. Stop the unit from TD7/UC800.
62
56
65
59
2. Open the electrical disconnect or circuit protection
65
57
switch that provides line power to the line power
71
64
terminal block(s) in the starter panel (or to the unit
75
69
64
56
mounted disconnect).
71
65
3. Connect the phase-sequence indicator leads to the
74
69
line power terminal block as follows;
Phase Sequence Lead
Black (Phase A)
Red (Phase B)
Yellow (Phase C)
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.
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
Terminal
L1
L2
L3
11
111
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