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BITZER 2nd generation 2-stage tandem R22

Bitzer Semi hermetic 2-stage tandem S66J-32.2Y

Semi hermetic 2-stage tandem S66J-32.2Y

Tandem compressors are the simplest way of connecting two compressors in parallel. Turning on and shutting off one compressor allows for a particularly effective graduation of output. Particularly for applications with load fluctuations, this allows for cost-effective and energy-efficient operation under full- and part-load with all conventional refrigerants.

  • Displacement at 1450 min-1 : 2 x 63,5 (LP) 2 x 31,8 (HP)
  • Number of cylinders : 2x6
  • Oilcharge : 9,5 dm3

With liquid subcooling 50Hz (R22)

Compressor type Cond.temp. Qo / Pe Evaporating temperature °C
[°C] -20 -25 -30 -35 -40 -45 -50
S66J-32.2Y 30 Qo 61300 51200 42300 34450 27550 21400 15840
Pe 26,67 24,51 22,34 20,15 17,97 15,79 13,64
35 Qo 60600 50700 41900 34100 27200 21000 15330
Pe 28,52 26,17 23,80 21,43 19,06 16,71 14,39
40 Qo 60000 50200 41500 33750 26850 20600 14820
Pe 30,38 27,82 25,26 22,70 20,14 17,58 15,03
45 Qo 59300 49700 41100 33400 26500 20200
Pe 32,23 29,45 26,69 23,93 21,15 18,34
50 Qo 58700 49200 40750 33150 26250
Pe 34,06 31,07 28,10 25,13 22,09
55 Qo 58200 48800 40400 32900
Pe 35,88 32,65 29,48 26,27

Qo - Cooling capacity [Watt], Pe - Power consumption [kW]

Without liquid subcooling 50Hz (R22)

Compressor type Cond.temp. Qo / Pe Evaporating temperature °C
[°C] -20 -25 -30 -35 -40 -45 -50
S66J-32.2Y 30 Qo 55800 45550 36700 29150 22700 17140 12340
Pe 21,87 20,64 19,24 17,66 15,86 13,84 11,55
35 Qo 53600 43700 35250 27950 21700 16310 11580
Pe 23,75 22,29 20,65 18,83 16,79 14,53 12,01
40 Qo 51400 41900 33800 26800 20750 15490 10840
Pe 25,63 23,97 22,12 20,04 17,73 15,17 12,33
45 Qo 49100 40100 32300 25600 19800 14690
Pe 27,48 25,68 23,62 21,29 18,66 15,70
50 Qo 46800 38300 30900 24500 18890
Pe 29,28 27,37 25,15 22,56 19,55
55 Qo 44550 36500 29500 23400
Pe 31,03 29,03 26,67 23,83

Qo - Cooling capacity [Watt], Pe - Power consumption [kW]

Compressor type Displacement at 1450 min-1 Number of cylinders Oil charge Weight Pipe connections Motor Max. operating current Max. power consumption Starting current(lockedrotor)
LP HP DL SL
dm3 Kg mm pouce mm pouce Amp kW Amp. Y/YY
S66J-32.2Y 2 x 63,5 2 x 31,8 2 x 6 9,5 411 2 x 35 13/8 2 x 42 15/8 380 ..420YY/3/50
440 ..480 YY/3/60		 2 x 31 2 x 18,1 2 x 81/132