Danfoss VLZ065, Инструкции по применению

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Manage operating envelope
R
Requirement
The operating envelope for VLZ scroll
compressors is given in the figures below and
guarantees reliable operations of the compressor
for steady-state operation.
Moreover, the discharge gas temperature must
not exceed 135°C (275°F). Steady-state operation
envelope is valid for a suction superheat above
10K.
Single envelope control
Pressure settings R404A R448A/R449A
Working range high side bar(g) 7.2-27.7 6.2-26.2
Working range low side bar(g) 1.5-7.2 1.0-6.2
Maximum high pressure safety switch setting* bar(g) 29.1 27.6
Minimum low pressure safety switch setting bar(g) 1.3 0.8
Minimum low pressure pump-down switch setting** bar(g) 1.5 1.0
*Maximum allowable pressure on high pressure side according to PED regulation.
**Recommended pump-down switch settings: 1.5 bar below nominal evap.
Condensing t
emper
atur
e (°C
)
Evaporating temperature (°C)
Evaporating temperature (°F)
Condensing 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
3000-6600 rpm
1800-6600 rpm
3300-6600 r
pm
SH10K
RGT=20°C
Danfoss
OE-000056
Condensing t
emper
atur
e (°C
)
Evaporating temperature (°C)
Evaporating temperature (°F)
Condensing 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
3000-6600 rpm
1800-6600 rpm
3300-6600 r
pm
SH10K
RGT=20°C
Danfoss
OE-000057
VLZ065 operating map - R404A
VLZ065 operating map - R448A/R449A
29
AB444226142054en-000101