Technical Guide
251933-YTG-V-0913
Johnson Controls Unitary Products 33
ZR048 (4.0 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
1000
77 59.1 3.3 26.2 22.1 17.9 - - - 58.1 3.3 25.3 21.3 17.2 - - -
72 55.2 3.2 32.9 28.7 24.6 20.4 - - 53.3 3.2 31.7 27.6 23.6 19.6 - -
67 51.2 3.0 39.5 35.4 31.2 27.1 22.9 - 48.6 3.2 38.0 34.0 30.0 26.0 21.9 -
62 41.9 3.1 41.9 40.2 34.9 30.8 26.6 22.5 42.6 3.2 42.6 40.3 35.0 31.0 27.0 23.0
1200
77 63.5 3.2 29.7 24.9 20.0 - - - 61.6 3.2 28.6 23.9 19.1 - - -
72 59.3 3.0 37.2 32.3 27.5 22.6 - - 56.5 3.2 35.7 30.9 26.1 21.4 - -
67 55.0 2.9 44.6 39.7 34.9 30.0 25.2 - 51.5 3.2 42.8 38.0 33.2 28.4 23.6 -
62 45.0 3.0 45.0 43.9 39.1 34.2 29.3 24.5 45.1 3.2 45.1 43.6 38.8 34.0 29.3 24.5
57 45.2 2.9 45.2 45.2 42.4 37.6 32.7 27.9 43.5 3.1 43.5 43.5 40.5 35.8 31.0 26.2
1400
77 67.9 3.1 33.3 27.7 22.1 - - - 65.1 3.2 32.0 26.5 20.9 - - -
72 63.3 2.9 41.5 35.9 30.3 24.8 - - 59.7 3.2 39.8 34.2 28.7 23.2 - -
67 58.7 2.8 49.7 44.1 38.6 33.0 27.4 - 54.4 3.2 47.5 42.0 36.4 30.9 25.4 -
62 48.2 2.9 48.2 47.6 43.2 37.6 32.1 26.5 47.7 3.1 47.7 46.9 42.6 37.0 31.5 26.0
57 48.3 2.8 48.3 48.3 46.9 41.3 35.8 30.2 46.0 3.1 46.0 46.0 44.5 38.9 33.4 27.9
1600
77 72.3 3.0 36.8 30.5 24.2 - - - 68.5 3.2 35.4 29.1 22.8 - - -
72 67.4 2.8 45.8 39.5 33.2 27.0 - - 62.9 3.2 43.8 37.5 31.2 24.9 - -
67 62.5 2.6 54.8 48.5 42.2 36.0 29.7 - 57.3 3.1 52.2 45.9 39.7 33.4 27.1 -
62 51.3 2.8 51.3 51.3 47.3 41.1 34.8 28.5 50.2 3.1 50.2 50.2 46.3 40.1 33.8 27.5
57 51.4 2.7 51.4 51.4 51.4 45.1 38.8 32.6 48.5 3.1 48.5 48.5 48.4 42.1 35.8 29.5
1800
72 69.2 2.9 49.0 42.1 35.3 28.5 - - 64.9 3.2 46.9 40.2 33.4 26.6 - -
67 64.2 2.8 59.1 51.7 44.9 38.0 31.2 - 59.1 3.2 56.0 49.2 42.4 35.6 28.8 -
62 52.7 2.9 52.7 52.7 50.3 43.4 36.6 29.7 51.8 3.2 51.8 51.8 49.5 42.8 36.0 29.2
57 52.8 2.8 52.8 52.8 52.7 45.9 39.0 32.2 50.0 3.1 50.0 50.0 50.0 43.2 36.4 29.6
2000
72 70.9 3.1 52.2 44.8 37.4 30.0 - - 66.9 3.2 50.1 42.8 35.5 28.3 - -
67 65.8 2.9 63.3 54.9 47.5 40.1 32.6 - 60.9 3.2 59.7 52.4 45.1 37.9 30.6 -
62 54.0 3.0 54.0 54.0 53.2 45.7 38.3 30.9 53.4 3.2 53.4 53.4 52.8 45.5 38.2 30.9
57 54.1 3.0 54.1 54.1 54.1 46.7 39.3 31.8 51.6 3.2 51.6 51.6 51.6 44.3 37.0 29.7
95°F 105°F
1000
77 57.2 3.2 24.4 20.5 16.6 - - - 51.7 3.8 21.7 18.2 14.4 - - -
72 51.5 3.3 30.5 26.6 22.7 18.8 - - 47.0 3.8 28.4 24.5 20.6 16.8 - -
67 45.9 3.4 36.6 32.7 28.8 24.9 21.0 - 42.3 3.9 35.0 30.8 26.9 23.1 19.2 -
62 43.3 3.3 43.3 40.3 35.2 31.3 27.4 23.5 39.8 3.8 39.8 38.2 32.6 28.7 24.8 21.0
1200
77 59.7 3.3 27.6 22.9 18.1 - - - 54.1 3.8 25.1 20.5 15.8 - - -
72 53.8 3.4 34.2 29.5 24.8 20.1 - - 49.1 3.9 32.0 27.4 22.8 18.2 - -
67 47.9 3.5 40.9 36.2 31.5 26.8 22.1 - 44.2 3.9 39.0 34.4 29.7 25.1 20.5 -
62 45.3 3.3 45.3 43.3 38.6 33.9 29.2 24.5 41.7 3.8 41.7 40.6 36.0 31.3 26.7 22.1
57 41.9 3.3 41.9 41.9 38.6 33.9 29.2 24.5 39.0 3.8 39.0 39.0 35.7 31.0 26.4 21.8
1400
77 62.2 3.4 30.8 25.2 19.7 - - - 56.4 3.9 28.4 22.7 17.3 - - -
72 56.1 3.5 38.0 32.5 27.0 21.5 - - 51.3 3.9 35.7 30.3 24.9 19.6 - -
67 50.0 3.6 45.3 39.8 34.3 28.8 23.3 - 46.2 4.0 43.0 37.9 32.5 27.2 21.8 -
62 47.2 3.4 47.2 46.2 42.0 36.5 31.0 25.5 43.5 3.9 43.5 42.9 39.3 34.0 28.6 23.2
57 43.7 3.4 43.7 43.7 42.0 36.5 31.0 25.5 40.8 3.9 40.8 40.8 39.0 33.7 28.3 22.9
1600
77 64.8 3.4 33.9 27.6 21.3 - - - 58.8 3.9 31.8 25.0 18.8 - - -
72 58.4 3.5 41.8 35.5 29.2 22.9 - - 53.5 4.0 39.4 33.2 27.1 21.0 - -
67 52.0 3.6 49.7 43.4 37.1 30.8 24.5 - 48.1 4.0 47.0 41.5 35.4 29.2 23.1 -
62 49.1 3.5 49.1 49.1 45.4 39.0 32.7 26.4 45.3 3.9 45.3 45.3 42.7 36.6 30.5 24.3
57 45.5 3.5 45.5 45.5 45.4 39.1 32.8 26.5 42.5 3.9 42.5 42.5 42.4 36.3 30.1 24.0
1800
72 60.6 3.5 44.9 38.2 31.5 24.7 - - 55.1 3.9 42.1 35.6 29.0 22.5 - -
67 54.0 3.6 52.9 46.7 39.9 33.2 26.5 - 49.6 4.0 49.0 44.4 37.9 31.3 24.8 -
62 51.0 3.4 51.0 51.0 48.8 42.1 35.4 28.7 46.7 3.9 46.7 46.7 45.3 38.7 32.2 25.6
57 47.3 3.4 47.3 47.3 47.2 40.5 33.8 27.1 43.8 3.9 43.8 43.8 43.8 37.2 30.6 24.1
2000
72 62.9 3.4 48.0 40.9 33.7 26.6 - - 56.8 3.9 44.9 37.9 31.0 24.0 - -
67 56.0 3.5 56.0 49.9 42.8 35.6 28.5 - 51.1 4.0 51.1 47.4 40.4 33.4 26.4 -
62 52.9 3.4 52.9 52.9 52.3 45.2 38.1 30.9 48.2 3.9 48.2 48.2 47.9 40.9 33.9 26.9
57 49.0 3.4 49.0 49.0 49.0 41.9 34.7 27.6 45.1 3.9 45.1 45.1 45.1 38.1 31.1 24.2