Zt090 (7.5 Ton) 2Nd Stage Cooling - York ZT SERIES Technical Manual

5167821-YTG-K-1118

ZT090 (7.5 ton) 2nd stage cooling

Air on evaporator
coil
Total
1
capacity
WB
CFM
(MBh)
(°F)
77 80.9
72 72.8
1250
67 64.8
62 56.0
77 83.9
72 75.6
1500 67 67.2
62 58.1
57 59.9
77 87.0
72 78.3
1750 67 69.6
62 60.2
57 62.0
77 90.0
72 81.0
2000 67 72.0
62 62.3
57 64.2
72 82.8
67 73.6
2250
62 63.7
57 65.6
72 84.6
67 75.2
2500
62 65.1
57 67.1
77 71.1
72 63.8
1250
67 56.6
62 51.2
77 72.9
72 65.4
1500 67 58.0
62 52.5
57 53.2
77 74.6
72 67.0
1750 67 59.4
62 53.8
57 54.5
77 76.4
72 68.6
2000 67 60.8
62 55.1
57 55.8
72 69.6
67 61.7
2250
62 55.9
57 56.6
72 70.6
67 62.6
2500
62 56.6
57 57.4
42
Sensible capacity (MBh)
Total input
Return dry bulb (°F)
2
(kW)
90 85 80
75°F
2.6 38.3 31.3 25.3
2.6 45.0 39.0 33.0
2.7 51.6 46.7 40.7
2.7 56.0 56.0 49.7
2.6 41.7 34.6 27.5
2.6 50.1 43.0 35.8
2.6 58.4 51.3 44.2
2.7 58.1 58.1 53.9
2.8 59.9 59.9 54.9
2.5 45.1 37.9 29.6
2.6 55.2 46.9 38.6
2.6 65.2 55.9 47.6
2.7 60.2 60.2 58.1
2.7 62.0 62.0 59.2
2.5 48.4 41.2 31.8
2.5 60.2 50.8 41.4
2.6 72.0 60.5 51.1
2.6 62.3 62.3 62.3
2.7 64.2 64.2 63.5
2.5 65.4 54.9 44.5
2.6 73.6 65.9 54.8
2.6 63.7 63.7 63.7
2.7 65.6 65.6 65.3
2.5 70.6 59.0 47.5
2.6 75.2 71.4 58.6
2.6 65.1 65.1 65.1
2.7 67.1 67.1 67.1
95°F
3.7 30.5 26.6 20.8
3.8 40.1 34.2 28.4
3.8 49.6 41.9 36.1
3.9 51.2 51.2 43.0
3.7 36.6 29.6 22.7
3.8 45.0 38.0 31.1
3.8 53.4 46.4 39.5
3.9 52.5 52.5 47.0
3.9 53.2 53.2 47.5
3.7 42.7 32.7 24.6
3.7 49.9 41.8 33.7
3.8 57.1 50.9 42.8
3.9 53.8 53.8 51.0
3.8 54.5 54.5 51.5
3.7 48.8 35.8 26.6
3.7 54.8 45.6 36.4
3.8 60.8 55.4 46.2
3.9 55.1 55.1 55.1
3.8 55.8 55.8 55.6
3.7 59.3 49.1 39.0
3.8 61.7 59.0 49.5
3.9 55.9 55.9 55.9
3.8 56.6 56.6 56.5
3.7 63.7 52.6 41.6
3.8 62.6 62.6 52.8
3.9 56.6 56.6 56.6
3.8 57.4 57.4 57.4
Temperature of air on condenser coil
Total
1
capacity
(MBh)
75 70 65
- - - 76.0
27.1 - - 68.3
34.8 28.8 - 60.7
43.7 37.7 31.8 53.6
- - - 78.4
28.7 - - 70.5
37.1 30.0 - 62.6
46.8 39.7 32.6 55.3
47.8 40.7 33.6 56.5
- - - 80.8
30.4 - - 72.7
39.4 31.1 - 64.5
49.9 41.6 33.3 57.0
51.0 42.7 34.5 58.2
- - - 83.2
32.1 - - 74.8
41.7 32.3 - 66.4
52.9 43.5 34.1 58.7
54.1 44.7 35.3 60.0
34.0 - - 76.2
44.4 33.9 - 67.7
53.3 42.8 32.4 59.8
54.8 44.4 33.9 61.1
36.0 - - 77.6
47.1 35.6 - 68.9
53.6 42.1 30.6 60.9
55.6 44.0 32.5 62.2
- - - 65.1
22.6 - - 57.9
30.3 24.4 - 50.8
37.2 31.4 25.6 47.0
- - - 66.5
24.1 - - 59.2
32.5 25.5 - 51.9
40.1 33.1 26.2 48.0
40.5 33.6 26.6 48.6
- - - 67.9
25.6 - - 60.4
34.7 26.6 - 53.0
43.0 34.9 26.8 49.0
43.5 35.4 27.3 49.7
- - - 69.3
27.1 - - 61.7
37.0 27.7 - 54.0
45.8 36.6 27.4 50.0
46.4 37.1 27.9 50.7
28.8 - - 62.3
39.3 29.2 - 54.6
45.7 35.5 25.4 50.5
46.3 36.2 26.0 51.2
30.5 - - 62.9
41.7 30.6 - 55.1
45.6 34.5 23.4 51.0
46.3 35.2 24.1 51.7
Sensible capacity (MBh)
Total input
Return dry bulb (°F)
2
(kW)
90 85 80
85°F
3.2 34.4 28.9 23.0
3.2 42.5 36.6 30.7
3.2 50.6 44.3 38.4
3.3 53.6 53.6 46.4
3.1 39.2 32.1 25.1
3.2 47.5 40.5 33.5
3.2 55.9 48.9 41.8
3.3 55.3 55.3 50.5
3.3 56.5 56.5 51.2
3.1 43.9 35.3 27.1
3.2 52.5 44.4 36.2
3.2 61.2 53.4 45.2
3.3 57.0 57.0 54.6
3.3 58.2 58.2 55.4
3.1 48.6 38.5 29.2
3.1 57.5 48.2 38.9
3.2 66.4 57.9 48.6
3.2 58.7 58.7 58.7
3.3 60.0 60.0 59.6
3.1 62.3 52.0 41.7
3.2 67.7 62.5 52.2
3.2 59.8 59.8 59.8
3.3 61.1 61.1 60.9
3.1 67.1 55.8 44.5
3.2 68.9 67.0 55.7
3.2 60.9 60.9 60.9
3.2 62.2 62.2 62.2
105°F
4.4 27.7 23.5 18.4
4.4 37.5 31.7 25.9
4.5 47.3 39.8 33.4
4.5 47.0 47.0 38.5
4.4 35.1 27.2 20.2
4.4 42.3 35.4 28.5
4.4 49.5 43.6 36.7
4.5 48.0 48.0 42.3
4.5 48.6 48.6 42.8
4.4 42.6 30.8 22.0
4.4 47.2 39.1 31.0
4.4 51.8 47.5 40.0
4.5 49.0 49.0 46.1
4.5 49.7 49.7 46.7
4.3 50.1 34.4 23.9
4.4 52.1 42.9 33.6
4.4 54.0 51.3 43.4
4.5 50.0 50.0 50.0
4.4 50.7 50.7 50.6
4.4 55.8 46.3 36.1
4.4 54.6 53.2 46.5
4.5 50.5 50.5 50.5
4.4 51.2 51.2 51.2
4.4 59.4 49.7 38.5
4.4 55.1 55.1 49.7
4.5 51.0 51.0 51.0
4.4 51.7 51.7 51.7
Johnson Controls Ducted Systems
75 70 65
- - -
24.8 - -
32.5 26.6 -
40.5 34.6 28.7
- - -
26.4 - -
34.8 27.8 -
43.4 36.4 29.4
44.2 37.1 30.1
- - -
28.0 - -
37.1 28.9 -
46.4 38.2 30.1
47.2 39.0 30.9
- - -
29.6 - -
39.3 30.0 -
49.4 40.1 30.8
50.3 40.9 31.6
31.4 - -
41.9 31.6 -
49.5 39.2 28.9
50.6 40.3 30.0
33.3 - -
44.4 33.1 -
49.6 38.3 27.0
50.9 39.6 28.3
- - -
20.1 - -
27.6 21.8 -
32.7 26.9 21.1
- - -
21.5 - -
29.8 22.8 -
35.4 28.4 21.5
35.9 29.0 22.0
- - -
23.0 - -
32.0 23.9 -
38.1 30.0 21.9
38.6 30.6 22.5
- - -
24.4 - -
34.2 24.9 -
40.8 31.5 22.3
41.4 32.2 22.9
25.9 - -
36.3 26.1 -
40.3 30.1 19.9
41.0 30.8 20.6
27.3 - -
38.5 27.3 -
39.8 28.6 17.4
40.5 29.3 18.2