How To Install; Ambient Temperature And Altitude; Environmental Requirements For Mechanical Installation; Accessory Bags - Danfoss VLT CDS 303 Operating Instructions Manual

How to Install

3 How to Install
3 3
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 Table 3.1.
For more details on derating due to environmental factors,
contact Danfoss technical support.
Altitude [ft/m]
3280/1000
4921/1500
6561/2000
8202/2500
9842/3000
11482/3500
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.
14
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VLT Compressor Drives CDS 302/CDS 303
3.2 Mechanical Installation

3.2.1 Accessory Bags

Find the following parts included in the accessory bag:
Derating factor
1
0.95
0.90
0.86
0.82
0.78
Danfoss A/S © Rev. 2013-07-03 All rights reserved.
Figure 3.1 Enclosures B1 and B2, IP21/IP55/Type 1/Type 12
Figure 3.2 Enclosure B3, IP20/Chassis
61 68
39 42
95
99
Figure 3.3 Enclosure B4, IP20/Chassis
MG34M422