Table 4C - Capacity Control Steps,
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| r | LOADING SEQUENCE A |
| l | - | LOAD11 |
| i SEQUENCE B |
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| UNIT |
| CONTROL |
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| % |
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| SIZE |
| S T E P S | Displacement |
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| Compressors |
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| Displacement |
| Compressors |
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| UVvW |
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| PWprox) |
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| - |
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| - |
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| 1 1 |
| Bl* |
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| - |
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| - |
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| - |
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| - |
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| :; |
| AIBt& | * |
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| - |
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| Ai,Bl |
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| - |
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| - |
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| ii |
| Al ,Bl | *,B2 |
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| 190,36OA, |
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| - |
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| - |
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| 5 0 |
| Al,Bl,B2 |
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39:: | (8514w |
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| - |
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| 61 |
| Al ,A2,Bl | *,B2 |
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| , |
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| - |
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| - |
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| Al ,A2,Bl | ,B2 |
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| - |
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| - |
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| 7; |
| Al ,A2,Bl | *,B2,B3 |
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| - |
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| - |
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| a3 |
| Al .A2,Bl |
| ,B2,B3 |
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| - |
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| - |
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| 9 4 |
| Al,A$,A$,Bi |
| • | ,82,83 |
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| 100 |
| Al ,A2,A3,Bl | ,B2,B3 |
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| A l * |
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| Bl* |
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| Al% • |
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| A&* |
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| Al’,BI |
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| Al,i31* |
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| Al ,Bl |
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| Al ,Bl |
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| Al*,A2,Bi* |
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| Al • | ,Bl *,B2 |
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| Al *,A2,Bl |
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| 190,36OA, |
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| Al ,A2,Bl |
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| Al *,i2,B? *,B2 |
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| =J”8”1 y |
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| Al *,A2,Bl *,B2 |
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| , |
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| Al | *,A2,Bl ,B2 |
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| Al ,A2,Bi | *,B2 |
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| Al ,A2,Bl ,B2 |
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| Al ,A2,Bi | ,B2 |
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| Al *,A2,A3,Bl *,B2 |
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| Al *,A2,Bl *,B2,83 |
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| Al *,A2,A3,Bi | ,B2 |
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| Al ,A2,Bl | *,B2,B3 |
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| Al ,A2,A3,Bl ,B2 |
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| AI ,A2,Bl |
| ,B2,B3 |
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| Al *,A2,A3,Bl *,B2,83 |
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| Al*,A2,A3,Bl*,B2,B3 |
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| Al *,A2,A3,Bl |
| ,B2,63 |
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| AI .A2.A3.Bl | *.B2.B3 |
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| At ,A2,A3,B | t | ,B2,B3 |
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| A& |
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| 14 |
| AK1 |
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| 210,39QA, |
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| Al ,A2,Bl |
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| Al $1 ,B2 |
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420%: | (86p Hz) |
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| Al ,A2,Bl |
| ,B2 |
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| Al ,A2,Bl | ,B2 |
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| I |
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| Al ,A2,A3,81 |
| ,B2 |
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| Al ,A2,Bl |
| ,B2,B3 |
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| AI ,A2,A3,Bl |
| ,B2,B3 |
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| Al ,A2,A3,Bl | ,B2,B3 |
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| Al ,A2,A3,A4,Bl |
| ,B2,B3 |
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| Al ,A2,A3.A4,Bl |
| ,B2.B3 |
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| Al* |
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| - |
| - |
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| Al”B1 |
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| - |
| - |
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| Al ,kl |
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| - |
| - |
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| Al | • | ,A2,Bl |
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| - |
| - |
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| Al ,A2,Bl |
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| - |
| - |
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| 210, 390A, |
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| Al • ,A2,Bl ,B2 |
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| - |
| - |
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| 42y3g | HZ) |
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| Al ,A2,Bl |
| ,B2 |
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| - |
| - |
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| , |
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| Al | • | ,A2,A3,Bl ,B2 |
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| - |
| - |
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| At ,A2,A3,Bt |
| ,B2 |
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| - |
| - |
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| Al • | ,A2,A3,61 ,B2,B3 |
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| - |
| - |
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| Al | ,A2,A3,Bl |
| ,B2,B3 |
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| - |
| - |
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| Al | • | ,A2,A3,A4,Bi ,B2,B3 |
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| - |
| - |
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| Al ,A2,A3,A4,Bl |
| ,B2,B3 |
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| - |
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| - |
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| - |
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| Bl* |
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| - |
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| - |
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| Al’:1 | * |
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| - |
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| - |
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| Ai,Bi |
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| - |
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| Al,Bl*,B2 |
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| - |
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| - |
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| Al ,Bl | ,B2 |
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| 210, 390A, |
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| - |
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| - |
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| At,A2,BI |
| • ,B2 |
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| 42of,Bs(f~~ | Hz) |
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| - |
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| Al ,A2,Bl |
| ,B2 |
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| 1 |
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| - |
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| Al ,A2,Bl | • | ,B2,B3 |
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| - |
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| - |
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| Al ,A2,Bl |
| ,B2,B3 |
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| - |
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| Al ,A2,A3,Bl | *,B2,83 |
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| - |
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| Al ,A2,A3,Bl |
| ,B2,B3 |
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| - |
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| Al ,A2,A3,A4,Bl |
| *,B2,B3 |
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| - |
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| Al ,A2,A3,A4,Bl |
| ,B2,B3 |
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*Unloaded compressor.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
2 1