Figure 7: Operating envelope R32 DSF270 to DSF530
C
ondensing t
emper
atur
e (°C
)
C
ondensing t
emper
atur
e (°F)
Evaporating temperature (°C)
Evaporating temperature (°F)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
41
0
32
50
59
68
77
86
95
104
113
122
131
140
149
158
-30
-35
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
-22
-31
-13
-4
5
14
23
32
41
50
59
68
77
86
S.H. = 5 K (9°F)
CC-000543
S.H. = 10 K (18°F)
Pressure settings
Table 10: Pressure settings
Pressure settings
R32
Working range high side
bar(g)
10 – 43
psig
145 – 624
Working range low side
bar(g)
1.7 – 15.9
psig
25 – 231
Maximum high pressure safety switch setting
bar(g)
44.4
psig
645
Minimum low pressure safety switch setting
bar(g)
1.5
psig
22
Minimum low pressure pump-down switch setting
bar(g)
1.5 bar below nominal evap. pressure with minimum of 1.7 bar(g)
psig
22 psi below nominal evap. pressure with minimum of 25 psig
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 define HP and LP limits within operating envelope and
pressure setting table above.
© Danfoss | Climate Solutions | 2023.06
AB309735209512en-000603 | 17
Scroll compressors, DSF090 to DSF530 | Operating envelope data