3 How to Install
3.1 Environment
3.1.1 Ambient Temperature and Altitude
The normal ambient temperature supported by the CDS is
-10 °C to +50 °C without derating. The CDS operates
normally down to -20 °C with only the LCP display
function impaired but without performance reduction.
For ambient temperatures above +50 °C it is mandatory to
integrate the derating output factor for the maximum
compressor electrical motor power/current.
For altitudes above 1000 m, apply derating as shown in
Table 3.1.
For more details on derating due to environmental factors,
contact Danfoss technical support.
Altitude [m] Derating factor
1000 1
1500 0.95
2000 0.90
2500 0.86
3000 0.82
3500 0.78
Table 3.1 Altitude Derating Factor
3.1.2
Environmental Requirements for
Mechanical Installation
The unit is cooled by means of air circulation.
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 45 °C to 55 °C,
derating will become relevant. The service life of the unit is
reduced if derating for ambient temperature is not taken
into account.
3.2
Mechanical Installation
3.2.1 Accessory Bags
Find the following parts included in the CDS302 Accessory
Bag
Illustration 3.1 Frame Sizes B1 and B2, IP21/IP55/Type 1/Type 12
61
68
39
42
50
53
54
RELAY 1
RELAY 2
03
02
01
06
05
04
130BT346.10
WARNING:
Risk of Electric Shock - Dual supply
Discunnect mains and loadsharing before service
Illustration 3.2 Frame Size B3, IP20/Chassis
61
68
39
50
53
54
5
42
03
02
01
06
05
04
99
95
130BT347.10
WARNING:
Risk of Electric Shock - Dual supply
Disconnect mains and loadsharing before service
Illustration 3.3 Frame Size B4, IP20/Chassis
130BA406.10
61 68 6
39 42 50 53 54 5
03 02 01
06 05 04
A
B
C D
E
F
G
H
I
J K
WARNING:
Risk of Electric Shock - Dual supply
Disconnect mains and loadsharing before service
ISOA0021
Illustration 3.4 Frame Sizes C1 and C2, IP55/66/Type 1/Type 12
99
95
61
68
39
50
53
54
5
42
03
02
01
06
05
04
130BT348.10
Risk of Electric Shock - Dual supply
Disconnect mains and loadsharing before service
WARNING:
RELAY 1
RELAY 2
Illustration 3.5 Frame Size C3, IP20/Chassis
How to Install
Operating Instructions VLT
®
CDS302 and CDS303
14 MG34M302 - VLT
®
is a registered Danfoss trademark/Commercial Compressor
3
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