Technical Specifications; Compressor Specifications; Frequency Converter Specifications; Oil Injection Control - Danfoss VZH Series Application Manuallines

Application guidelines

Compressor specifications

Frequency converter
specifications

Oil injection control

Bearings lubrication

Technical specifications

Swept
Compressor model volume
(cu.in/rev)
VZH088 5.39
VZH117 7.13
VZH170 10.39
Mains supply voltage
Supply frequency
Output voltage
Inputs
Programmable outputs
Protection functions
Compressor functions
VZH compressors are equipped with an oil
injection system that makes the compression
pockets more tight thus improving the isotropic
efficiency of the compressor as well as controls
the oil circulation ratio, at all running speeds.
The frequency converter via an oil injection valve
controls this system. The oil injection valve is a
normally closed valve. At low speed, the valve
is closed and the oil is injected to the scroll set
suction ports.
Optimal bearings lubrication is ensured by a
gearotor oil pump at all compressor speeds.
Displacement
25 rps 50 rps 60 rps
(cu.ft/h) (cu.ft/h) (cu.ft/h)
272 544 657
357 717 869
523 1045 1261
T2: 200 - 240 V +/-10% (3-phase)
T4: 380 - 480 V +/-10% (3-phase)
T6: 525 - 600 V +/-10% (3-phase)
0 - 100 % of supply voltage
6 digital (0 - 24 V), 2 analogue (0 /±10 V or 4 - 20 mA, scalable)
2 digital (0- 24 V), 1 analogue (0-24 V), 2 relay
Over-current protection, low / high current handling
Discharge gas temperature protection, pressostat / thermostat function, short
cycle protection, oil return management
The compressors are delivered with no coils.
208V-240V or 24V coils are available as accessory
(refer to "Accessories" section). The coil must be
installed for oil injection control.
Control parameters are factory preset but
accessible on the parameter list as read only
values.
Single compressors
Oil charge Net weight
100 rps
(oz)
(cu.ft/h)
1088 112
1434 122
1914 228
50 / 60 Hz
FRCC.PC.023.A7.22
(lbs)
121
134
247
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