Application Guide
Scroll compressors
DSH090 to DSH600
R410A - R454B - R452B, 50Hz -60Hz
www.danfoss.com
Scroll compressors, DSH090 to DSH600 | Contents
Contents
Safety and warnings 5
Introduction 6
Product description 6
Cut Away DSH090-184 6
Cut Away DSH240-600 7
How do IDVs work? 7
Product identication 8
Name Plate 8
Nomenclature 8
Compressors serial number 9
Certicates, declarations and approvals 10
Certicates, declarations, and approvals 10
Low voltage directive 2014/35/EU 10
Machines directive 2006/42/EC 10
Pressure equipment directive 2014/68/EU 10
Internal free volume 10
Refrigerants 11
General Information 11
R410A 11
R452B 11
R454B 11
Technical specication 12
50-60 Hz data Single compressor 12
Performance data 13
R410A 50-60 Hz, Single compressor 13
R452B 50-60 Hz, Single compressor 14
R454B 50-60 Hz, Single compressor 14
Sound and vibration data 16
Compressor sound radiation - Single 16
Mechanical vibrations 17
Operating envelope data 18
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Scroll compressors, DSH090 to DSH600 | Contents
Operating envelope 18
Dimensions 21
Single compressors 21
Tandem assemblies 22
Trio assemblies 24
Mechanical connections 26
Connection Details 26
Design compressor mounting 26
Design piping 31
Electrical connections 37
Wiring connections 37
Electrical Specications 39
Application 45
Manage oil in the circuit 45
Manage sound and vibration 45
Manage Operating envelope 46
Manage superheat 48
Manage o cycle migration 51
Power supply and electrical protection 54
Control logic 57
Reduce moisture in the system 59
Assembly line procedure 59
Commissioning 62
Dismantle and disposal 63
Packaging 64
Single pack 64
Industrial pack 64
Ordering 65
Single pack 65
Industrial pack 66
Accessories and Spare parts 68
Solder sleeve adapter set 68
Rotolock adapter 68
Gaskets 68
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Scroll compressors, DSH090 to DSH600 | Contents
Solder sleeve 68
Rotolock nut 69
Motor protection modules 69
Surface sump heaters 69
Discharge temperature protection 70
Mounting hardware 70
Lubricant 70
Terminal boxes, covers and T-block connectors 70
Acoustic hoods 71
Miscellaneous 71
Tandem kits 71
Trio kits 72
Online support 73
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Scroll compressors, DSH090 to DSH600 | Safety and warnings
Safety and warnings
Danfoss compressors are designed and manufactured according to the state of the art and to valid European and US
regulations. Particular emphasis has been placed on safety and reliability. Related instructions are highlighted with
the following icons:
This icon indicates instructions to avoid safety risk.
This icon indicates instructions to avoid reliability risk.
The purpose of this guideline is to help customers qualify compressors in the unit. You are strongly advise to follow
these instructions. For any deviation from the guidelines, please contact Danfoss Technical Support. In any case,
Danfoss accepts no liability as a result of the improper integration of the compressor into the unit by the system
manufacturer.
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Intermediate discharge valves (IDVs) increase
seasonal eciency
Heat shield lowers the heat transfer between
discharge and suction gas and the sound level
Internal Non Return Valve (INRV) prevents
excessive leak rate from high pressure side
Lead free polymer bearings improve behavior
under poor lubrication conditions
Patented motor cap for optimal motor cooling and
higher resistance to liquid slugging
Organ pipe masters oil circulation in manifold
conguration.
Scroll compressors, DSH090 to DSH600 | Introduction
Introduction
Product description
Danfoss scroll compressor DSH for R410A, R454B and R452B is available as single compressor and can be assembled
in tandem or trio combinations.
DSH series scroll compressor benet from an improved design to achieve the highest eciency and increased life
time.
Cut Away DSH090-184
Figure 1: Cut Away DSH090-184
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Intermediate discharge valves (IDVs) increase
seasonal eciency
Heat shield lowers the heat transfer between
discharge and suction gas and the sound level
Internal Non Return Valve (INRV) prevents
excessive leak rate from high pressure side
Integrated discharge gas temperature protection
(DGT)
Lead free polymer bearings improve behavior
under poor lubrication conditions
Patented gas path ow with gas intake design
induce higher resistance to liquid slugging
Organ pipe masters oil circulation in manifold
conguration
Scroll compressors, DSH090 to DSH600 | Introduction
Cut Away DSH240-600
Figure 2: Cut Away DSH240-600
How do IDVs work?
Figure 3: Intermediate Discharge Valve (IDV)
Danfoss Intermediate Discharge Valves (IDVs) are located close to the discharge side of the compressor. They reduce
excessive compression of refrigerant under part-load conditions while maintaining the same cooling capacity. The
IDVs open when discharge pressure falls below the built-in optimization point. They adapt the eort of the motor to
the varying load and pressure conditions in the system, thus reducing the eort of the motor and its electrical
consumption and improving the system’s seasonal energy eciency.
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M A D E I N F R A N C E
M odel no : DSH485B4APC
S erial no : JC112345678
380-415V 3~50H z
460V 3~60H z
LR 344A M A X OPER. 91 A
T her mally pr ot ec t ed sy st em
P .E .D .
M ar k ing
PS
T S M ax
T S M in
V olume
L ubr ican t:P .O .E . 160SZ
LP Side HP Side
31,20 bar
52,0 C
-35,0 C
28,5 L
48,70 bar
150 C
-35 C
3,9 L
H
2019
Refriger an t: R410A R452B R454B
876543210
PRO TEC TED B Y DOMESTIC AND FOREIGN P A TENT S
0038 089
1
5
6
7
2
3
4
Supply voltage, Starting current & Maximum
operating current
Factory charged lubricant
F amily , lubric an t
& r efriger an t
DSH : S cr oll , POE lubr ican t,
R410A and R454B/R452B
(ac c or ding t o v ersion)
Mot or pr ot ec tion
A : Elec tr onic module , 24V A C, R410A only
B : Elec tr onic module , 110-240V , R410A only
P : Elec t onic module , 110-240V , R410A/R454B/R452B
X : Elec t onic module ,24V A C, R410A/R454B/R452B
L : I n t er nal o v er load pr ot ec t or , R410A/R454B/R452B
Suc tion and dischar ge c onnec tions
A : Br az ed c onnec tions
F amily ,
lubr ican t
& r efr iger an t
Nominal
capacit y
Appr o v als V oltage V ersion E v olution
index
E v olution inde x
A~Z
C 4 DSH B AB 485
Mot or v oltage c ode
3 : 200-230V/3~/60H z
4 : 380-415V/3~/50H z - 460V/3~/60H z
7 : 575V/3~/60H z
9 : 380-400V/3~/60H z
for DSH240 and DSH381: 380V/3~/60H z
UL inde x
Nominal c apacit y
in thousand Btu/h at 60H z
ARI c onditions
Scroll compressors, DSH090 to DSH600 | Product identication
Product identication
Name Plate
Figure 4: Name Plate
Nomenclature
The example below presents the compressor nomenclature which equals the technical reference as shown on the
compressor nameplate. Code numbers for ordering are listed in section Ordering .
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Year code 8 Digit serial number
12345678 A 25 B
Plant assembly line code
Month code
Scroll compressors, DSH090 to DSH600 | Product identication
Compressors serial number
Table 1: Serial number code legend table
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Certicates, declarations, and approvals
CE 0062, CE 0038 or CE 0094 (European Directive)
UL (Underwriters Laboratories)
All DSH models
Other approvals / certicates
Declaration of conformity
Manufacturer’s declaration of incorporation
Category PED R452B / R454B
Maximum / Minimum temperature - Ts
-35°C < Ts < 55°C
-31°F < Ts < 131°F
-35°C < Ts < 52°C
-31°F < Ts < 125.6°F
-35°C < Ts < 52°C
-31°F < Ts < 125.6°F
Maximum allowable pressure (Low side) - Ps
R410A : 33.3 bar (g) / R452B and R454B : 31.2 bar(g)
R410A : 483 psig / R452B and R454B : 453 psig
Maximum allowable pressure (High side) - Ps
Declaration of conformity
Internal free volume without oil
Scroll compressors, DSH090 to DSH600 | Certicates, declarations and approvals
Certicates, declarations and approvals
Certicates, declarations, and approvals
DSH scroll compressors comply with the following approvals and certicates. Certicate are listed on:
Documentation for Commercial Compressor | Danfoss
Table 2: Certicates, declarations, and approvals
Low voltage directive 2014/35/EU
Table 3: Low voltage directive 2014/35/EU
Machines directive 2006/42/EC
Table 4: Machines directive 2006/42/EC
Pressure equipment directive 2014/68/EU
Table 5: Pressure equipment directive 2014/68/EU
Internal free volume
Table 6: Internal free volume
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Scroll compressors, DSH090 to DSH600 | Refrigerants
Refrigerants
General Information
When choosing a refrigerant, dierent aspects must be taken into consideration:
• Legislation (now and in the future)
• Safety
• Application envelope in relation to expected running conditions
• Compressor capacity and eciency
• Compressor manufacturer recommendations & Guidelines
Additional points could inuence the nal choice:
• Environmental considerations
• Standardisation of refrigerants and lubricants
• Refrigerant cost
• Refrigerant availability
R410A
R410A is a HFC blend (R32: 50%; R125: 50%) with a zero Ozone Depletion Potential (ODP=0) and a Global Warming
Potential of 1924/AR5 (2088/AR4). It is a near-azeotropic mixture with a temperature glide less than 0.2 K.
With its high net refrigeration eect coupled to a high density, the R410A has appeared in last decade to be the
preferred refrigerant for use in commercial air conditioners and heat pumps.
R452B
R452B is a HFO/HFC blend (R32: 67%; R125: 7%; R1234yf: 26%) with a zero Ozone Depletion Potential(ODP=0) and a
low Global Warming Potential (GWP: 676/AR5 ; 698/AR4). It is a near-azeotropic mixture with a temperature glide
around 1 K.
R452B has very close capacities versus R410A and due to its very limited discharge temperature dierence it
appears today as the best candidate for a direct drop in of R410A.
R452B is classied A2L with low ammability properties. Please refer to European regulations and directives about
the use of refrigerant of the A2L safety group ( EN378, EN60335). Outside Europe refer to the local regulation.
R454B
R454B is a HFO/HFC blend (R32 :68.9%; R1234yf: 31.1%) with a zero Ozone Depletion Potential (ODP=0) and a low
Global Warming Potential (GWP: 467/AR5; 466/AR4). It is a near-azeotropic mixture with a temperature glide around
1 K.
R454B has very close match to R410A in terms of capacity and discharge temperature dierence, and it oers better
eciencies compared to R410A.
R454B is classied A2L with low ammability properties. Please refer to European regulations and directives about
the use of refrigerant of the A2L safety group (EN378, EN60335). Outside Europe refer to the local regulation
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Scroll compressors, DSH090 to DSH600 | Technical specication
Technical specication
50-60 Hz data Single compressor
Table 7: Technical specication 50-60 Hz data Single compressor
(1)
(1)
Displacement at nominal speed: 2900rpm at 50 Hz
Displacement at nominal speed: 2900rpm at 50 Hz
(2)
(2)
Displacement at nominal speed: 3500rpm at 60 Hz
Displacement at nominal speed: 3500rpm at 60 Hz
(3)
(3)
Net weight with oil charge
Net weight with oil charge
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Scroll compressors, DSH090 to DSH600 | Performance data
Performance data
R410A 50-60 Hz, Single compressor
Table 8: 50-60 Hz Performance data
NOTE:
TR: Ton of Refrigeration,
COP: Coecient Of Performance
EER: Energy Eciency Ratio
Standard rating conditions For 50 Hz: Evaporating temperature: 5°C (41°F), Condensing temperature: 50°C (122°F),
Superheat: 10K (18°F), Subcooling: 0K (0°F)
For 60 Hz: Evaporating temperature: 7.2°C (45°F), Condensing temperature: 54.4°C (130°F), Superheat: 11.1K (20°F),
Subcooling: 8.3K (15°F)
Subject to modication without prior notication.
Data given for motor code 4 compressor with above conditions
For regular updates and detailed capacities, please refer to Coolselector®2 .
© Danfoss | Climate Solutions | 2022.01 AB288965961751en-001301 | 13
Scroll compressors, DSH090 to DSH600 | Performance data
R452B 50-60 Hz, Single compressor
Table 9: 50-60 Hz Performance data
NOTE:
TR: Ton of Refrigeration,
COP: Coecient Of Performance
EER: Energy Eciency Ratio
Standard rating conditions For 50 Hz: Evaporating temperature: 5°C (41°F), Condensing temperature: 50°C (122°F),
Superheat: 10K (18°F), Subcooling: 0K (0°F)
For 60 Hz: Evaporating temperature: 7.2°C (45°F), Condensing temperature: 54.4°C (130°F), Superheat: 11.1K (20°F),
Subcooling: 8.3K (15°F)
Subject to modication without prior notication.
Data given for motor code 4 compressor with above conditions
For regular updates and detailed capacities, please refer to Coolselector®2 .
R454B 50-60 Hz, Single compressor
Table 10: 50-60 Hz Performance data
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Scroll compressors, DSH090 to DSH600 | Performance data
NOTE:
TR: Ton of Refrigeration,
COP: Coecient Of Performance
EER: Energy Eciency Ratio
Standard rating conditions For 50 Hz: Evaporating temperature: 5°C (41°F), Condensing temperature: 50°C (122°F),
Superheat: 10K (18°F), Subcooling: 0K (0°F)
For 60 Hz: Evaporating temperature: 7.2°C (45°F), Condensing temperature: 54.4°C (130°F), Superheat: 11.1K (20°F),
Subcooling: 8.3K (15°F)
Subject to modication without prior notication.
Data given for motor code 4 compressor with above conditions
For regular updates and detailed capacities, please refer to Coolselector®2 .
© Danfoss | Climate Solutions | 2022.01 AB288965961751en-001301 | 15
Acoustic hood
code number
Acoustic hood code number
Scroll compressors, DSH090 to DSH600 | Sound and vibration data
Sound and vibration data
Typical sounds and vibrations in systems can be broken down into the following three categories:
• Sound radiation (through air)
• Mechanical vibrations (through parts and structure)
• Gas pulsation (through refrigerant)
The following sections focus on the causes and methods of mitigation for each of the above sources.
Compressor sound radiation - Single
For sound radiating from the compressors, the emission path is air and the sound waves are travelling directly from
the machine in all directions.
Table 11: Compressor sound radiation (R410A/R452B/R454B Max. DGT 135°C)
(1)
(1)
Attenuation given with acoustic hood
Attenuation given with acoustic hood
(2)
(2)
For DSH381code 3
For DSH381code 3
(3)
(3)
No acoustic hood available for DSH485 code 3 and DSH600
No acoustic hood available for DSH485 code 3 and DSH600
Table 12: Compressor sound radiation(R452B/R454B Max. DGT 150°C)
(1)
(1)
Attenuation given with acoustic hood
Attenuation given with acoustic hood
(2)
(2)
No acoustic hood available for DSH381code 3 and DSH485 code3
No acoustic hood available for DSH381code 3 and DSH485 code3
NOTE:
Sound power and attenuation are given at ARI conditions, measured in free space
For compressors running simultaneously,
- The global sound level of “n” identical compressors is:
L
Example for the trio
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=Li+10 Log10 n
GLOBAL
Scroll compressors, DSH090 to DSH600 | Sound and vibration data
DSH720=3 × DSH240(50 Hz)
L
L
=82dB(A)
DSH240
=82+10 Log10 3=86 . 8dB(A)
DSH720
- The global sound level of “n” dierent compressors with respectively Li sound level is:
L
GLOBAL
i = n
= 10
i = 1
log10(∑ 10
0.1
∗ Li)
Example for the tandem
DSH424=DSH184+DSH240(50 Hz)
L
L
DSH184
DSH424
=78dB(A),L
=10Log10(10
DSH240
0 . 1×78
=82dB(A)
0 . 1×82
+10
)= 83 . 5dB(A)
Mechanical vibrations
A compressor generates some vibrations that propagate into the surrounding parts and structure. The vibration
level of a DSH compressor alone does not exceed 120µm peak to peak for DSH090 to DSH184, and 154µm peak to
peak for DSH240 to DSH600. However, when system structure natural frequencies are close to running frequency,
vibrations are amplied due to resonance phenomenon.
A high vibration level is damageable for piping reliability and generates high sound levels.
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Condensing temperature (°C)
Evaporating temperature (°C)
Evaporating temperature (°F)
Condensing temperature (°F)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
41
50
59
68
77
86
95
104
113
122
131
140
149
158
S.H. = 5 K (9°F)
S.H. = 30 K (54°F)
CC-000040
Condensing temperature (°C)
Evaporating temperature (°C)
Evaporating temperature (°F)
Condensing temperature (°F)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
41
50
59
68
77
86
95
104
113
122
131
140
149
S.H. = 30 K (54°F)
CC-000042
Scroll compressors, DSH090 to DSH600 | Operating envelope data
Operating envelope data
The Operating envelope for DSH scroll compressors guarantees reliable operations of the compressor for steady-
state operation.
Steady-state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage.
Operating envelope
Figure 5: R410A - DSH090 to DSH184
Figure 6: R410A - DSH240 to DSH600
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C ondensing t emper atur e (°C )
E v apor ating t emper atur e (°C )
E v apor ating t emper atur e (°F)
C ondensing t emper atur e (°F)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
41
50
59
68
77
86
95
104
113
122
131
140
149
158
S.H. = 30 K (54°F)
S.H. = 5 K (9°F)
C C-000039
C ondensing t emper atur e (°C )
E v apor ating t emper atur e (°C )
E v apor ating t emper atur e (°F)
C ondensing t emper atur e (°F)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
41
50
59
68
77
86
95
104
113
122
131
140
149
158
S.H. = 5 K (9°F)
S.H. = 30 K (54°F)
C C-000038
Scroll compressors, DSH090 to DSH600 | Operating envelope data
Figure 7: R452B / R454B - DSH090 to DSH105 (Max. DGT 150°C)
Figure 8: R452B / R454B - DSH120 to DSH184 (Max. DGT 150°C)
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C ondensing t emper atur e (°C )
E v apor ating t emper atur e (°C )
E v apor ating t emper atur e (°F)
C ondensing t emper atur e (°F)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
-40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
-40 -31 -22 -13 -4 5 14 23 32 41 50 59 68 77 86
41
50
59
68
77
86
95
104
113
122
131
140
149
158
S.H. = 30 K (54°F)
S.H. = 5 K (9°F)
C C-000041
Pressure settings
Maximum high pressure safety switch setting
Minimum low pressure safety switch setting
Minimum low pressure pump-down switch setting
1.5 bar below nominal evap. pressure with minimum of 1.7 bar(g)
22 psi below nominal evap. pressure with minimum of 25 psig
Scroll compressors, DSH090 to DSH600 | Operating envelope data
Figure 9: R452B / R454B - DSH240 to DSH485
NOTE:
The application envelope of a cross-platform manifold results in the conjunction of map limitations of compressors
composing the tandem.
Pressure settings
Table 13: Pressure settings
High and low pressure protection
Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all
the compressors.
LP switch auto restart must be limited to 5 times within 12 hours.
HP safety switch must be reset manually.
Depending on application operating envelope, you must dene HP and LP limits within operating envelope and
pressure setting table above.
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Ø D
H1
Ø19.05mm
(0.75 inch)
L3
L2
190.5mm
(7.5 inch)
190.5mm
(7.5 inch)
L1
30°
H2
H
30°
C C-000055
Ø D
H
H 2
H 1
L 1
L 3
L 2
8556208
H
H2
H1
Ø D
L2
L3
L1
8556199
inchmminchmminchmminchmminchmminchmminch
Scroll compressors, DSH090 to DSH600 | Dimensions
Dimensions
Single compressors
Figure 10: Outline drawing number 1
Figure 11: Outline drawing number 2
Figure 12: Outline drawing number 3
Table 14: Single compressors
(1)
(1)
DSH105-120
DSH105-120
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inchmminchmminchmminchmminch
Scroll compressors, DSH090 to DSH600 | Dimensions
Tandem assemblies
Figure 13: Outline drawing number 1
Figure 16: Outline drawing number 4
Figure 14: Outline drawing number 2
Figure 17: Outline drawing number 5
Figure 15: Outline drawing number 3
Table 15: Tandem assemblies
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