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BITZER 2nd generation 2-stage tandem

Bitzer Semi hermetic 2-stage tandem S66F-60.2(Y)

Semi hermetic 2-stage tandem S66F-60.2(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 101,1 (LP) 2 x 50,5 (HP)
  • Number of cylinders : 2x6
  • Oilcharge : 9,5 dm3

With liquid subcooling 50Hz (R404A/R507A)

Compressor type Cond.temp. Qo / Pe Evaporating temperature °C
[°C] -25 -30 -35 -40 -45 -50 -55 -60 -65 -70
S66F-60.2(Y) 30 Qo 86800 74800 63500 53000 43400 34850 27400 21050 15840 11610
Pe 45,07 41,29 37,55 33,88 30,30 26,84 23,53 20,40 17,49 14,81
35 Qo 85000 73200 62100 51800 42400 34050 26850 20700 15560 11350
Pe 47,70 43,72 39,77 35,88 32,09 28,41 24,90 21,57 18,46 15,59
40 Qo 83000 71500 60600 50600 41450 33350 26350 20300 15180
Pe 50,39 46,20 42,03 37,92 33,90 30,01 26,28 22,75 19,45
45 Qo 80900 69700 59100 49350 40550 32700 25850 19840
Pe 53,19 48,74 44,32 39,96 5,71 31,59 27,65 23,92
50 Qo 79000 67900 57700 48250 39750 32100 25300
Pe 56,13 51,37 46,65 42,02 37,50 33,15 28,99
55 Qo 77600 66500 56400 47250 39000 31500
Pe 59,28 54,11 49,03 44,07 39,26 34,65

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

Without liquid subcooling 50Hz (R404A/R507A)

Compressor type Cond.temp. Qo / Pe Evaporating temperature °C
[°C] -25 -30 -35 -40 -45 -50 -55 -60 -65 -70
S66F-60.2(Y) 30 Qo 76100 63500 52100 42000 33250 25750 19580 14560 10590 7520
Pe 42,53 37,62 33,22 29,29 25,80 22,73 20,05 17,72 15,71 13,99
35 Qo 72000 59900 49000 39400 31150 24150 18370 13680 9950 7020
Pe 44,21 39,31 34,83 30,75 27,06 23,76 20,83 18,26 16,04 14,16
40 Qo 67600 56000 45800 36800 29050 22550 17190 12790 9240
Pe 45,91 41,06 36,52 32,29 28,40 24,84 21,64 18,81 16,36
45 Qo 62900 52100 42500 34150 27000 21000 16000 11840
Pe 47,64 42,84 38,24 33,88 29,79 25,99 22,52 19,41
50 Qo 57900 47950 39200 31550 25000 19430 14730
Pe 49,44 44,62 39,95 35,47 31,22 27,22 23,51
55 Qo 52800 43750 35800 28850 22900 17750
Pe 51,34 46,38 41,61 37,03 32,68 28,54

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
S66F-60.2(Y) 2 x 101,1 2 x 50,5 2 x 6 9,5 461 2 x 35 13/8 2 x 42
2 x 54		 15/8
21/8		 380 ..420YY/3/50
440 ..480 YY/3/60		 2 x 53 2 x 30,1 2 x 135/220