Technical Guide
528150-YTG-T-0514
80 Johnson Controls Unitary Products
ZR090 (7.5 Ton) Cooling
Air on
Evaporator Coil
Temperature of Air on Condenser Coil
Total
Capacity
1
(MBh)
Total
Input
(kW)
2
Sensible Capacity (MBh)
Total
Capacity
1
(MBh)
Total
Input
(kW)
2
Sensible Capacity (MBh)
CFM
WB
(°F)
Return Dry Bulb (°F) Return Dry Bulb (°F)
90 85 80 75 70 65 90 85 80 75 70 65
75°F 85°F
1875
77 95.3 5.1 41.7 33.4 25.0 - - - 98.4 5.8 42.5 34.5 26.4 - - -
72 88.9 5.0 49.7 41.3 33.0 24.6 - - 91.0 5.8 52.7 44.7 36.7 28.6 - -
67 82.4 4.9 57.7 49.3 41.0 32.6 24.2 - 83.6 5.7 63.0 54.9 46.9 38.9 30.8 -
62 72.3 4.9 72.3 63.4 49.7 41.3 32.9 24.6 74.5 5.7 74.5 70.1 57.5 49.5 41.5 33.4
2250
77 104.3 5.1 50.1 40.6 31.2 - - - 104.3 5.9 49.0 39.9 30.7 - - -
72 97.2 5.0 60.3 50.9 41.4 32.0 - - 96.4 5.8 60.9 51.8 42.6 33.5 - -
67 90.1 5.0 70.6 61.1 51.7 42.2 32.8 - 88.5 5.8 72.8 63.7 54.5 45.4 36.3 -
62 79.1 4.9 79.1 73.2 62.8 53.3 43.9 34.4 79.0 5.7 79.0 76.0 66.9 57.8 48.6 39.5
57 76.9 4.9 76.9 74.8 63.8 54.3 44.9 35.4 77.6 5.7 77.6 76.5 67.4 58.3 49.1 40.0
2625
77 113.3 5.2 58.4 47.9 37.4 - - - 110.2 5.9 55.5 45.3 35.0 - - -
72 105.5 5.1 70.9 60.4 49.9 39.4 - - 101.9 5.8 69.1 58.9 48.6 38.4 - -
67 97.8 5.0 83.4 72.9 62.4 51.9 41.3 - 93.5 5.8 82.7 72.4 62.2 52.0 41.7 -
62 85.9 5.0 85.9 82.9 75.8 65.3 54.8 44.3 83.4 5.7 83.4 82.0 76.3 66.1 55.8 45.6
57 83.6 5.0 83.6 82.5 77.0 66.5 55.9 45.4 82.0 5.7 82.0 81.4 76.9 66.6 56.4 46.2
3000
77 122.2 5.2 66.8 55.2 43.6 - - - 116.0 5.9 62.0 50.7 39.4 - - -
72 113.8 5.1 81.6 69.9 58.3 46.7 - - 107.3 5.9 77.3 65.9 54.6 43.3 - -
67 105.4 5.1 96.3 84.7 73.1 61.5 49.9 - 98.5 5.8 92.5 81.2 69.9 58.5 47.2 -
62 92.7 5.0 92.7 92.7 88.9 77.3 65.7 54.1 87.9 5.8 87.9 87.9 85.7 74.3 63.0 51.7
57 90.2 5.0 90.2 90.2 90.2 78.6 67.0 55.4 86.3 5.8 86.3 86.3 86.3 75.0 63.7 52.3
3375
72 116.9 5.2 86.8 74.3 61.8 49.4 - - 109.2 5.9 82.5 70.2 58.0 45.8 - -
67 108.2 5.1 103.7 89.9 77.5 65.0 52.5 - 100.3 5.8 97.3 86.4 74.2 62.0 49.7 -
62 95.1 5.1 95.1 95.1 93.3 80.8 68.4 55.9 89.4 5.8 89.4 89.4 88.3 76.1 63.9 51.6
57 92.7 5.1 92.7 92.7 92.7 80.2 67.7 55.3 87.9 5.8 87.9 87.9 87.9 75.6 63.4 51.2
3750
72 119.9 5.2 92.0 78.7 65.3 52.0 - - 111.1 5.9 87.7 74.5 61.4 48.3 - -
67 111.0 5.1 111.0 95.2 81.9 68.5 55.2 - 102.0 5.8 102.0 91.7 78.5 65.4 52.3 -
62 97.6 5.1 97.6 97.6 97.6 84.3 71.0 57.7 91.0 5.8 91.0 91.0 91.0 77.9 64.7 51.6
57 95.1 5.1 95.1 95.1 95.1 81.8 68.4 55.1 89.4 5.8 89.4 89.4 89.4 76.3 63.1 50.0
95°F 105°F
1875
77 101.5 6.6 43.2 35.6 27.9 - - - 94.5 7.5 39.4 33.0 25.5 - - -
72 93.1 6.6 55.7 48.0 40.3 32.7 - - 86.4 7.5 52.8 45.3 37.7 30.2 - -
67 84.7 6.5 68.2 60.5 52.8 45.1 37.4 - 78.3 7.5 66.2 57.5 50.0 42.5 34.9 -
62 76.8 6.5 76.8 76.8 65.4 57.7 50.0 42.3 71.2 7.4 71.2 71.2 60.6 53.1 45.5 38.0
2250
77 104.3 6.6 47.9 39.1 30.3 - - - 96.9 7.5 45.1 36.4 27.7 - - -
72 95.7 6.6 61.5 52.7 43.9 35.0 - - 88.5 7.5 58.4 49.7 41.0 32.3 - -
67 87.0 6.5 75.0 66.2 57.4 48.6 39.8 - 80.2 7.4 71.7 63.0 54.3 45.6 36.9 -
62 78.9 6.5 78.9 78.9 71.0 62.2 53.4 44.6 73.0 7.4 73.0 73.0 65.8 57.1 48.4 39.7
57 78.3 6.5 78.3 78.3 71.1 62.2 53.4 44.6 73.0 7.4 73.0 73.0 66.1 57.4 48.7 40.0
2625
77 107.1 6.6 52.6 42.6 32.7 - - - 99.2 7.5 50.7 39.7 29.8 - - -
72 98.2 6.6 67.2 57.3 47.4 37.4 - - 90.6 7.5 63.9 54.1 44.2 34.3 - -
67 89.3 6.5 81.9 72.0 62.0 52.1 42.1 - 82.1 7.4 77.1 68.4 58.6 48.7 38.8 -
62 81.0 6.5 81.0 81.0 76.7 66.8 56.9 46.9 74.7 7.4 74.7 74.7 70.9 61.1 51.2 41.4
57 80.4 6.5 80.4 80.4 76.7 66.8 56.9 46.9 74.8 7.4 74.8 74.8 71.3 61.4 51.6 41.7
3000
77
109.9 6.6 57.3 46.2 35.1 - - - 101.5 7.5 56.4 43.0 32.0 - - -
72 100.7 6.6 73.0 61.9 50.9 39.8 - - 92.7 7.5 69.5 58.5 47.4 36.4 - -
67 91.6 6.5 88.7 77.7 66.6 55.6 44.5 - 84.0 7.4 82.6 73.9 62.8 51.8 40.8 -
62 83.1 6.5 83.1 83.1 82.4 71.4 60.3 49.2 76.5 7.4 76.5 76.5 76.1 65.1 54.1 43.0
57 82.4 6.5 82.4 82.4 82.4 71.4 60.3 49.3 76.5 7.4 76.5 76.5 76.5 65.5 54.4 43.4
3375
72 101.5 6.6 78.2 66.2 54.2 42.2 - - 93.0 7.4 74.7 62.7 50.8 38.8 - -
67 92.3 6.5 90.9 82.9 70.9 58.9 46.9 - 84.3 7.4 83.5 78.0 67.3 55.3 43.4 -
62 83.7 6.5 83.7 83.7 83.4 71.4 59.4 47.4 76.7 7.4 76.7 76.7 76.5 64.6 52.6 40.6
57 83.1 6.5 83.1 83.1 83.1 71.1 59.1 47.1 76.7 7.4 76.7 76.7 76.7 64.8 52.8 40.8
3750
72 102.3 6.6 83.3 70.4 57.5 44.5 - - 93.3 7.4 79.9 67.0 54.1 41.2 - -
67 93.0 6.6 93.0 88.2 75.2 62.3 49.4 - 84.5 7.4 84.5 82.1 71.7 58.8 46.0 -
62 84.3 6.5 84.3 84.3 84.3 71.4 58.5 45.5 76.9 7.4 76.9 76.9 76.9 64.0 51.1 38.2
57 83.7 6.5 83.7 83.7 83.7 70.7 57.8 44.9 76.9 7.4 76.9 76.9 76.9 64.0 51.1 38.3