Open hours: 8.00-18.30 MOn-Fri

BITZER 2nd generation 2-stage tandem R22

Bitzer Semi hermetic 2-stage tandem S66H-40.2(Y)

Semi hermetic 2-stage tandem R22 - S66H-40.2(Y)

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 73,6 (LP) 2 x 36,9 (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
S66H-40.2(Y) 30 Qo 71000 59300 49000 39950 31900 24800 18360
Pe 30,91 28,41 25,89 23,36 20,82 18,31 15,81
35 Qo 70300 58800 48550 39500 31500 24300 17770
Pe 33,06 30,33 27,59 24,84 22,10 19,37 16,68
40 Qo 69500 58200 48100 39100 31100 23850 17170
Pe 35,21 32,24 29,27 26,31 23,34 20,37 17,42
45 Qo 68800 57600 47650 38750 30750 23450
Pe 37,35 34,14 30,94 27,74 24,52 21,26
50 Qo 68100 57000 47200 38400 30450
Pe 39,48 36,01 32,57 29,13 25,61
55 Qo 67500 56500 46850 38150
Pe 41,59 37,85 34,17 30,45

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
S66H-40.2(Y) 30 Qo 64700 52800 42550 33800 26300 19870 14300
Pe 25,35 23,92 22,30 20,46 18,39 16,04 13,39
35 Qo 62100 50700 40850 32400 25150 18900 13420
Pe 27,53 25,83 23,94 21,82 19,46 16,84 13,92
40 Qo 59500 48600 39150 31050 24050 17950 12560
Pe 29,70 27,79 25,64 23,23 20,55 17,58 14,30
45 Qo 56900 46450 37450 29700 22950 17030
Pe 31,85 29,76 27,38 24,68 21,63 18,20
50 Qo 54300 44350 35800 28400 21900
Pe 33,94 31,72 29,14 26,15 22,66
55 Qo 51600 42300 34200 27100
Pe 35,97 33,65 30,91 27,62

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
S66H-40.2(Y) 2 x 73,6 2 x 36,9 2 x 6 9,5 433 2 x 35 13/8 2 x 42 15/8 380 ..420YY/3/50
440 ..480 YY/3/60		 2 x 37 2 x 21,5 2 x 97/158