3 How to Install
3.1 Environment
3.1.1 Ambient Temperature and Altitude
The normal ambient temperature supported by the CDS is
-14000000
°
F to +122
°
F without derating. The CDS
operates normally down to -4
°
F with only the LCP display
function impaired but without performance reduction.
For ambient temperatures above +122
°
F, it is mandatory
to integrate the derating output factor for the maximum
compressor electrical motor power/current.
For altitudes above 3280 ft (1000 m), apply derating as
shown in
.
For more details on derating due to environmental factors,
contact Danfoss technical support.
Altitude [ft/m]
Derating factor
3280/1000
1
4921/1500
0.95
6561/2000
0.90
8202/2500
0.86
9842/3000
0.82
11482/3500
0.78
Table 3.1 Altitude Derating Factor
3.1.2 Environmental Requirements for
Mechanical Installation
The unit is air-cooled. To protect the unit from overheating,
ensure that the ambient temperature does not exceed the
maximum temperature stated for the 24-hour average
temperature. If the ambient temperature is in the range of
113
°
F to 131
°
F, derating becomes relevant. If derating for
ambient temperature is not taken into account, the service
life of the unit is reduced.
3.2 Mechanical Installation
3.2.1 Accessory Bags
Find the following parts included in the accessory bag:
130B
T330.10
Figure 3.1 Enclosures B1 and B2, IP21/IP55/Type 1/Type 12
61 68
39 42 50 53
54
RELAY 1
RELAY 2
0302
01
06
0504
130B
T346.10
WARNING:
Risk of Electric Shock - D
ual supply
Discunnect mains and loadshar
ing before service
Figure 3.2 Enclosure B3, IP20/Chassis
61 68
39
50 53 54 5
42
0302
01
0605
04
99
95
130B
T347.10
WARNING:
Risk of Electric Shock - D
ual supply
Disconnect mains and loadshar
ing before service
Figure 3.3 Enclosure B4, IP20/Chassis
How to Install
VLT
®
Compressor Drives CDS 302/CDS 303
14
Danfoss A/S © Rev. 2013-07-03 All rights reserved.
MG34M422
3
3
Summary of Contents for VLT CDS 303
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