21
Table 5B — Part Load Data Percent Displacement, With Accessory Unloaders
*Unloaded compressor.
†Two unloaders, both unloaded.
NOTE: Some control steps will be skipped if they do not increase chiller capacity when staging up or decrease chiller capacity when staging down.
UNIT
30GTN,R
30GUN,R
CONTROL
STEPS
LOADING SEQUENCE A LOADING SEQUENCE B
% Displacement
(Approx)
Compressors
% Displacement
(Approx)
Compressors
040 (60 Hz)
1 25 A1* 25 B1*
250A150B1
3 75 A1*,B1 75 A1,B1*
4 100 A1,B1 100 A1,B1
040 (50 Hz)
045 (60 Hz)
1 24 A1* 21 B1†
247A137B1*
345A1*,B1† 53 B1
4 61 A1*,B1* 45 A1*,B1†
5 84 A1,B1* 61 A1*,B1*
6 100 A1,B1 84 A1,B1*
7 ——100 A1,B1
045 (50 Hz)
050 (60 Hz)
118A1† 20 B1†
2 31 A1* 38 B1*
344A156B1
438A1†,B1† 38 A1†,B1†
551A1*,B1† 51 A1*,B1†
6 69 A1*,B1* 69 A1*,B1*
7 82 A1,B1* 82 A1,B1*
8 100 A1,B1 100 A1,B1
050 (50 Hz)
060 (60 Hz)
115A1† 18 B1†
2 28 A1* 38 B1*
342A158B1
433A1†,B1† 33 A1†,B1†
547A1*,B1† 47 A1*,B1†
6 67 A1*,B1* 67 A1*,B1*
7 80 A1,B1* 80 A1,B1*
8 100 A1,B1 100 A1,B1
060 (50 Hz)
070 (60 Hz)
116A1† 16 B1†
2 33 A1* 33 B1*
350A150B1
431A1†,B1† 31 A1†,B1†
549A1*,B1† 49 A1*,B1†
6 66 A1*,B1* 66 A1*,B1*
7 83 A1,B1* 83 A1,B1*
8 100 A1,B1 100 A1,B1
070 (50 Hz)
111A1† 15 B1†
2 19 A1* 31 B1*
327A147B1
425A1†,B1† 25 A1†,B1†
533A1*,B1† 33 A1*,B1†
6 49 A1*,B1* 49 A1*,B1*
7 57 A1,B1* 57 A1,B1*
8 73 A1,B1 73 A1,B1
984A1†,A2,B1 68 A1,A2,B1†
10 92 A1*,A2,B1 84 A1,A2,B1*
11 100 A1,A2,B1 100 A1,A2,B1
080, 230B (60 Hz)
111A1† 15 B1†
2 22 A1* 30 B1*
334A144B1
441A1†,B1* 48 A1,B1†
555A1†,B1 63 A1,B1*
6 67 A1*,B1 78 A1,B1
7 78 A1,B1 85 A1,A2,B1*
8 89 A1*,A2,B1 100 A1,A2,B1
9 100 A1,A2,B1 ——
080, 230B (50 Hz)
18A1† 13 B1†
2 17 A1* 25 B1*
325A138B1
433A1†,B1* 50 A1,B1*
546A1†,B1 62 A1,B1
6 54 A1*,B1 67 A1*,A2,B1†
7 62 A1,B1 75 A1,A2,B1†
871A1†,A2,B1* 88 A1,A2,B1*
984A1†,A2,B1 100 A1,A2,B1
10 92 A1*,A2,B1 ——
11 100 A1,A2,B1 ——
090, 245B (60 Hz)
19A1† 9B1†
2 18 A1* 18 B1*
327A127B1
435A1†,B1 35 A1,B1†
5 44 A1*,B1 44 A1,B1*
6 53 A1,B1 53 A1,B1
756A1†,A2,B1 62 A1,B1†,B2
8 65 A1*,A2,B1 71 A1,B1*,B2
9 74 A1,A2,B1 80 A1,B1,B2
10 82 A1†,A2,B1,B2 82 A1,A2,B1†,B2
11 91 A1*,A2,B1,B2 91 A1,A2,B1*,B2
12 100 A1,A2,B1,B2 100 A1,A2,B1,B2
