Approval standard |
CE certified
UL certified when connected to frequency converter |
Brand technique |
Reciprocating compressor |
Capacity control |
Inverter |
Colour |
Blue |
Compressor power supply [V/Ph/Hz] |
380-480/3/50-60 |
Configuration code |
Single |
Connection type |
Rotolock |
Cylinder |
2 |
Description |
VTZ121-G |
Diameter [mm] |
288 mm |
Discharge connection height [mm] |
74 mm |
Discharge connection mounting torque [Nm] |
90 N-m |
Discharge connection pipe size [in] |
3/4 in |
Discharge connection rotolock size [in] |
1 1/4 in |
Discharge connection size [in] |
1 1/4 in |
Discharge connection sleeve pipe size [in] |
3/4 in |
Drawing number |
8502016a |
Economizer |
No |
Factory HP [bar] |
25 bar |
Factory LP [bar] |
25 bar |
Fitting remark |
(shipped with rotolock version only) |
Fitting sleeve |
ODF |
Fitting standard |
Rotolock |
Frequency [Hz] |
30 – 85 |
Gauge port HP |
None |
Gauge port LP |
Schrader |
Generation code |
A |
Glass mounting |
Threaded |
Glass torque [Nm] |
50 N-m |
GP LP torque [Nm] |
15 N-m |
High side max pressure (Ps) |
29.4 bar |
High Side TS Max |
150 °C |
High Side TS Min |
-35 °C |
High Side Volume |
0.6 L |
High value of nominal voltage at 50Hz [V] |
480 V |
High value of nominal voltage at 60Hz [V] |
480 V |
High value of voltage range at 50Hz [V] |
480 V |
High value of voltage range at 60Hz [V] |
480 V |
IP protection class |
IP54 (with cable gland) |
Low side max pressure (Ps) |
22.6 bar |
Low Side TS Max |
50 °C |
Low Side TS Min |
-35 °C |
Low Side Volume |
16.5 L |
Low value of nominal voltage at 50Hz [V] |
380 V |
Low value of nominal voltage at 60Hz [V] |
380 V |
Low value of voltage range at 50Hz [V] |
380 V |
Low value of voltage range at 60Hz [V] |
380 V |
LRA |
139 A |
MMT |
29 A |
Model number |
VTZ121AGNR1B |
Motor protection |
Motor protection by frequency converter |
Mounting torque [Nm] |
15 N-m |
Nominal cooling capacity at 50Hz |
6.7 kW |
Nominal cooling capacity at 60Hz |
14.4 kW |
Number of starts per hour [Max] |
12 |
Oil charge [L] |
1.8 L |
Oil equalization |
3/8” flare SAE |
Oil equalization torque [Nm] |
30 N-m |
Oil reference |
160PZ |
Packaging height [mm] |
455 mm |
Packaging length [mm] |
395 mm |
Packaging width [mm] |
365 mm |
Packing format |
Single pack |
Packing quantity |
1 |
Phase |
3 |
Power connections |
Screw 4.8 mm |
Refrigerant |
R134a
R404A
R407C
R507A |
Refrigerant charge [kg] [Max] |
5 kg |
Relief valve |
30 bar/8 bar |
RLA |
23.2 A |
Rotational speed at 50Hz [rpm] |
0 rpm |
Rotational speed at 60Hz [rpm] |
0 rpm |
Segment usage |
Air conditioning
Refrigeration LT
Refrigeration MT |
Shipped fittings |
Suction and discharge solder sleeves, rotolock nuts and gaskets |
Shipped instructions |
Installation instructions |
Shipped mounting |
Mounting kit with grommets, bolts, nuts, sleeves and washers |
Shipped oil |
Initial oil charge |
Suction connection height [mm] |
165 mm |
Suction connection mounting torque [Nm] |
110 N-m |
Suction connection pipe size [in] |
1 1/8 in |
Suction connection rotolock size [in] |
1 3/4 in |
Suction connection size [in] |
1 3/4 in |
Suction connection sleeve pipe size [in] |
1 1/8 in |
Swept volume [cm3] |
120.94 cm3 |
Technology |
Reciprocating |
Test dif [bar] [Max] |
30 bar |
Test HP [bar] [Max] |
30 bar |
Test LP [bar] [Max] |
25 bar |
Torque earth [Nm] |
3 N-m |
Torque power [Nm] |
3 N-m |
Total height [mm] |
413 mm |
Type |
VTZ |
Type designation |
Compressor |
Viscosity [cP] |
32 cP |
Winding resistance for three-phase compressors with identical windings [Ohm] |
0.59 Ohm |