Table 4C Ð Capacity Control Steps,
|
| LOADING SEQUENCE A | LOADING SEQUENCE B | ||
UNIT | CONTROL | % |
| % |
|
SIZE | STEPS | Displacement | Compressors | Displacement | Compressors |
|
| (Approx) |
| (Approx) |
|
| 1 | Ð | Ð | 6 | B1²² |
| 2 | Ð | Ð | 11 | B1* |
| 3 | Ð | Ð | 17 | B1 |
| 4 | Ð | Ð | 17 | A1*,B1²² |
| 5 | Ð | Ð | 23 | A1,B1²² |
| 6 | Ð | Ð | 28 | A1,B1* |
| 7 | Ð | Ð | 33 | A1,B1 |
| 8 | Ð | Ð | 34 | A1*,B1²²,B2 |
| 9 | Ð | Ð | 39 | A1,B1²²,B2 |
170, 270A, | 10 | Ð | Ð | 45 | A1,B1*,B2 |
11 | Ð | Ð | 50 | A1,B1,B2 | |
330A/B (60 Hz) | 12 | Ð | Ð | 51 | A1*,A2,B1²²,B2 |
A1²,B1²** | 13 | Ð | Ð | 56 | A1,A2,B1²²,B2 |
| 14 | Ð | Ð | 61 | A1,A2,B1*,B2 |
| 15 | Ð | Ð | 67 | A1,A2,B1,B2 |
| 16 | Ð | Ð | 67 | A1*,A2,B1²²,B2,B3 |
| 17 | Ð | Ð | 73 | A1,A2,B1²²,B2,B3 |
| 18 | Ð | Ð | 78 | A1,A2,B1*,B2,B3 |
| 19 | Ð | Ð | 83 | A1,A2,B1,B2,B3 |
| 20 | Ð | Ð | 84 | A1*,A2,A3,B1²²,B2,B3 |
| 21 | Ð | Ð | 89 | A1,A2,A3,B1²²,B2,B3 |
| 22 | Ð | Ð | 95 | A1,A2,A3,B1*,B2,B3 |
| 23 | Ð | Ð | 100 | A1,A2,A3,B1,B2,B3 |
| 1 | 6 | A1²² | 6 | B1²² |
| 2 | 11 | A1* | 11 | B1* |
| 3 | 17 | A1 | 17 | B1 |
| 4 | 17 | A1²²,B1* | 17 | A1*,B1²² |
| 5 | 23 | A1²²,B1 | 23 | A1,B1²² |
| 6 | 28 | A1*,B1 | 28 | A1,B1* |
| 7 | 33 | A1,B1 | 33 | A1,B1 |
| 8 | 34 | A1²²,A2,B1* | 34 | A1*,B1²²,B2 |
| 9 | 39 | A1²²,A2,B1 | 39 | A1,B1²²,B2 |
170, 270A, | 10 | 45 | A1*,A2,B1 | 45 | A1,B1*,B2 |
11 | 50 | A1,A2,B1 | 50 | A1,B1,B2 | |
330A/B (60 Hz) | 12 | 51 | A1²²,A2,B1*,B2 | 51 | A1*,A2,B1²²,B2 |
A1²**,B1²** | 13 | 56 | A1²²,A2,B1,B2 | 56 | A1,A2,B1²²,B2 |
| 14 | 61 | A1*,A2,B1,B2 | 61 | A1,A2,B1*,B2 |
| 15 | 67 | A1,A2,B1,B2 | 67 | A1,A2,B1,B2 |
| 16 | 67 | A1²²,A2,A3,B1*,B2 | 67 | A1*,A2,B1²²,B2,B3 |
| 17 | 73 | A1²²,A2,A3,B1,B2 | 73 | A1,A2,B1²²,B2,B3 |
| 18 | 78 | A1*,A2,A3,B1,B2 | 78 | A1,A2,B1*,B2,B3 |
| 19 | 83 | A1,A2,A3,B1,B2 | 83 | A1,A2,B1,B2,B3 |
| 20 | 84 | A1²²,A2,A3,B1*,B2,B3 | 84 | A1*,A2,A3,B1²²,B2,B3 |
| 21 | 89 | A1²²,A2,A3,B1,B2,B3 | 89 | A1,A2,A3,B1²²,B2,B3 |
| 22 | 95 | A1*,A2,A3,B1,B2,B3 | 95 | A1,A2,A3,B1*,B2,B3 |
| 23 | 100 | A1,A2,A3,B1,B2,B3 | 100 | A1,A2,A3,B1,B2,B3 |
| 1 | 9 | A1* | 9 | B1* |
| 2 | 14 | A1 | 14 | B1 |
| 3 | 19 | A1*,B1* | 19 | A1*,B1* |
| 4 | 23 | A1*,B1 | 23 | A1,B1* |
| 5 | 28 | A1,B1 | 28 | A1,B1 |
| 6 | 33 | A1*,A2,B1* | 38 | A1*,B1*,B2 |
170, 270A, | 7 | 37 | A1*,A2,B1 | 43 | A1,B1*,B2 |
8 | 42 | A1,A2,B1 | 47 | A1,B1,B2 | |
330A/B,360B (50 Hz) | 9 | 52 | A1*,A2,B1*,B2 | 52 | A1*,A2,B1*,B2 |
A1²,B1² | 10 | 57 | A1*,A2,B1,B2 | 57 | A1,A2,B1*,B2 |
| 11 | 61 | A1,A2,B1,B2 | 61 | A1,A2,B1,B2 |
| 12 | 72 | A1*,A2,A3,B1*,B2 | 72 | A1*,A2,B1*,B2,B3 |
| 13 | 76 | A1*,A2,A3,B1,B2 | 76 | A1,A2,B1*,B2,B3 |
| 14 | 81 | A1,A2,A3,B1,B2 | 81 | A1,A2,B1,B2,B3 |
| 15 | 91 | A1*,A2,A3,B1*,B2,B3 | 91 | A1*,A2,A3,B1*,B2,B3 |
| 16 | 96 | A1*,A2,A3,B1,B2,B3 | 96 | A1,A2,A3,B1*,B2,B3 |
| 17 | 100 | A1,A2,A3,B1,B2,B3 | 100 | A1,A2,A3,B1,B2,B3 |
*Unloaded compressor. ²Compressor unloader, standard. **Compressor unloader, accessory. ²²Two unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
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