RLC-SVX023A
25
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
Installation - Electrical
The Tracer UC800 Service Tool (TU) is used to install and
assign any of the above listed events or status to each of
the 4 relays. The default assignments for the 4 available
relays are listed below.
LLID Name
LLID Software
Relay Designation
Output Name
Default
Operating Status
Programmable Relays
Relay 0
Status Relay 1, J2-1,2,3
Evaporator Freeze Avoidance
Request
Relay 1
Status Relay 2, J2-4,5,6
Condenser Freeze Avoidance
Request
Relay 2
Status Relay 3, J2-7,8,9
Compressor Running
Relay 3
Status Relay 4, J2-10,11,12
Latching Alarm
If the evaporator/condenser pump request relays are
not used to manage the evaporator/condenser water
pumps then the evaporator/condenser freeze avoidance
request relays must be connected to the water pump
management system to switch the water pumps ON
when the Tracer UC800 identifies a risk of freeze up.
Latching input
The Tracer UC800 provides auxiliary control for a
customer specified/installed latching trip out. When
this customer-furnished remote contact is provided,
the chiller will run normally when the contact is closed.
When the contact opens, the unit will trip off on a
manually resettable diagnostic. This condition requires
manual reset at the chiller switch on the front of the
control panel.
External Auto/Stop
If the unit requires the external Auto/Stop function, the
installer must provide leads from the remote contacts to
the proper terminals of the LLID on the control panel. The
chiller will run normally when the contacts are closed.
When the contact opens, the compressor(s), if operating,
will go to the RUN : UNLOAD operating mode and cycle
off. Unit operation will be inhibited. Re-closure of the
contacts will permit the unit to automatically return to
normal operation.
NOTE:
A “panic “ stop (similar to “emergency “ stop) can
be manually commanded by pressing the STOP button
twice in a row, the chiller will immediately shut down,
but without creating a latching diagnostic.
Soft Loading
Soft loading will prevent the chiller from going to full
capacity during the pull-down period. The Tracer UC800
control system has two soft loading algorithms running
all of the time. They are capacity control soft loading and
current limit soft loading. These algorithms introduce the
use of a Filtered Chilled Water Setpoint and a Filtered
Current Limit Setpoint. After the compressor has been
started, the starting point of the filtered chilled water
setpoint is initialized to the value of the Evap Leaving
Water Temperature. The filtered current limit setpoint
is initialized to the value of the Current Limit Softload
Starting Percent. These filtered setpoints allow for a
stable pull-down that is user adjustable in duration. They
also eliminate sudden transients due to setpoint changes
during normal chiller operation.
3 settings are used to describe the behavior of soft
loading. The setup for soft loading can be done using TU.
• Capacity Control Softload Time: This setting controls the
time constant of the Filtered Chilled Water Setpoint. It is
settable between 0 and 120 min.
• Current Limit Control Softload Time: This Setting
controls the time constant of the Filtered Current Limit
Setpoint. It is settable between 0 and 120 minutes.
• Current Limit Softload Starting %: This setting controls
the starting point of the Filtered Current Limit Setpoint.
It is adjustable from 20 to 100% RLA.
