Zt078 (6.5 Ton) 3Rd Stage Cooling - York ZT SERIES Technical Manual

3 - 12.5 ton packaged rooftop units
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5167821-YTG-K-1118

ZT078 (6.5 ton) 3rd stage cooling

Air on evaporator
coil
Total
1
capacity
WB
CFM
(MBh)
(°F)
77
102.0
72
89.7
1625
67
77.4
62
70.7
77
107.4
72
94.5
1950
67
81.5
62
74.5
57
70.9
77
112.8
72
99.2
2275
67
85.7
62
78.2
57
74.5
77
118.2
72
104.0
2600
67
89.8
62
82.0
57
78.1
72
106.4
67
91.9
2925
62
83.9
57
79.9
72
108.7
67
93.9
3250
62
85.7
57
81.7
77
81.7
72
74.1
1625
67
66.4
62
57.0
77
85.4
72
77.4
1950
67
69.5
62
59.6
57
59.2
77
89.2
72
80.8
2275
67
72.5
62
62.2
57
61.8
77
92.9
72
84.2
2600
67
75.5
62
64.8
57
64.4
72
84.5
67
75.8
2925
62
65.0
57
64.6
72
84.7
67
76.0
3250
62
65.2
57
64.8
38
Sensible capacity (MBh)
Total input
Return dry bulb (°F)
2
(kW)
90
85
80
75°F
4.4
43.0
35.4
28.8
4.3
51.9
45.3
38.8
4.2
60.8
55.3
48.8
4.2
70.7
70.7
62.1
4.4
47.6
39.7
31.9
4.3
58.6
50.8
42.9
4.2
69.7
61.8
54.0
4.2
74.5
74.5
68.8
4.2
70.9
70.9
65.5
4.4
52.2
44.1
35.0
4.3
65.4
56.2
47.0
4.2
78.6
68.3
59.1
4.2
78.2
78.2
75.4
4.2
74.5
74.5
71.8
4.4
56.8
48.5
38.0
4.3
72.1
61.7
51.2
4.2
87.5
74.8
64.3
4.2
82.0
82.0
82.0
4.2
78.1
78.1
78.1
4.4
78.3
66.5
54.8
4.3
90.7
81.6
68.9
4.2
83.9
83.9
83.9
4.2
79.9
79.9
79.9
4.4
84.4
71.4
58.5
4.3
93.9
88.4
73.5
4.3
85.7
85.7
85.7
4.3
81.7
81.7
81.7
95°F
5.8
35.1
30.2
24.2
5.8
45.5
39.5
33.5
5.8
55.9
48.8
42.7
5.8
57.0
57.0
48.6
5.7
41.8
34.3
26.9
5.7
52.1
44.6
37.2
5.7
62.4
55.0
47.5
5.7
59.6
59.6
54.0
5.5
59.2
59.2
53.7
5.5
48.5
38.5
29.6
5.5
58.7
49.8
40.9
5.5
69.0
61.2
52.3
5.5
62.2
62.2
59.4
5.4
61.8
61.8
59.0
5.3
55.1
42.6
32.2
5.3
65.3
55.0
44.6
5.3
75.5
67.4
57.0
5.3
64.8
64.8
64.8
5.2
64.4
64.4
64.4
5.3
70.8
59.4
47.9
5.3
75.8
71.7
61.2
5.3
65.0
65.0
65.0
5.2
64.6
64.6
64.6
5.3
76.3
63.7
51.2
5.3
76.0
76.0
65.4
5.3
65.2
65.2
65.2
5.2
64.8
64.8
64.8
Temperature of air on condenser coil
Total
1
capacity
(MBh)
75
70
65
-
-
-
91.8
32.3
-
-
81.9
42.2
35.7
-
71.9
55.6
49.1
42.5
63.8
-
-
-
96.4
35.1
-
-
85.9
46.1
38.2
-
75.5
60.9
53.1
45.2
67.0
57.6
49.8
41.9
65.1
-
-
-
101.0
37.9
-
-
90.0
50.0
40.8
-
79.1
66.2
57.0
47.9
70.2
62.6
53.4
44.3
68.2
-
-
-
105.6
40.7
-
-
94.1
53.8
43.4
-
82.7
71.5
61.0
50.6
73.4
67.6
57.1
46.6
71.2
43.1
-
-
95.4
57.2
45.4
-
83.8
72.1
60.4
48.7
74.4
68.1
56.4
44.7
72.2
45.5
-
-
96.7
60.5
47.5
-
85.0
72.7
59.8
46.8
75.4
68.7
55.7
42.8
73.2
-
-
-
76.8
27.4
-
-
69.3
36.7
30.7
-
61.8
42.5
36.5
30.5
54.5
-
-
-
80.0
29.7
-
-
72.2
40.0
32.6
-
64.4
46.5
39.0
31.6
56.8
46.2
38.7
31.3
55.6
-
-
-
83.3
32.0
-
-
75.2
43.4
34.4
-
67.1
50.5
41.5
32.6
59.1
50.1
41.2
32.3
57.9
-
-
-
86.5
34.3
-
-
78.1
46.7
36.3
-
69.7
54.4
44.1
33.7
61.4
54.0
43.7
33.3
60.2
36.4
-
-
78.1
49.7
38.3
-
69.7
53.5
42.0
30.6
61.3
53.1
41.7
30.2
60.1
38.6
-
-
78.1
52.8
40.2
-
69.7
52.6
40.0
27.4
61.3
52.2
39.6
27.0
60.1
Sensible capacity (MBh)
Total input
Return dry bulb (°F)
2
(kW)
90
85
80
85°F
5.1
39.1
32.8
26.5
5.1
48.7
42.4
36.1
5.0
58.3
52.0
45.8
5.0
63.8
63.8
55.3
5.0
44.7
37.0
29.4
5.0
55.4
47.7
40.1
4.9
66.0
58.4
50.7
4.9
67.0
67.0
61.4
4.9
65.1
65.1
59.6
5.0
50.3
41.3
32.3
4.9
62.1
53.0
44.0
4.9
73.8
64.7
55.7
4.8
70.2
70.2
67.4
4.8
68.2
68.2
65.4
4.9
56.0
45.5
35.1
4.8
68.7
58.3
47.9
4.8
81.5
71.1
60.7
4.8
73.4
73.4
73.4
4.7
71.2
71.2
71.2
4.8
74.5
62.9
51.4
4.8
83.2
76.6
65.0
4.8
74.4
74.4
74.4
4.7
72.2
72.2
72.2
4.9
80.4
67.6
54.8
4.8
85.0
82.2
69.4
4.8
75.4
75.4
75.4
4.7
73.2
73.2
73.2
105°F
6.3
30.8
27.1
21.0
6.3
43.0
36.8
30.7
6.2
55.1
46.5
40.4
6.2
54.5
54.5
45.9
6.2
38.4
30.9
23.4
6.2
49.2
41.7
34.1
6.1
60.0
52.4
44.9
6.1
56.8
56.8
51.0
6.1
55.6
55.6
50.0
6.1
46.0
34.7
25.7
6.1
55.4
46.5
37.6
6.0
64.8
58.4
49.5
6.0
59.1
59.1
56.2
6.0
57.9
57.9
55.1
6.0
53.7
38.4
28.1
6.0
61.7
51.4
41.0
5.9
69.7
64.3
54.0
5.9
61.4
61.4
61.4
5.9
60.2
60.2
60.2
6.0
66.8
55.4
44.0
5.9
69.7
67.0
57.8
5.9
61.3
61.3
61.3
5.9
60.1
60.1
60.1
5.9
71.9
59.4
46.9
5.9
69.7
69.7
61.7
5.9
61.3
61.3
61.3
5.8
60.1
60.1
60.1
Johnson Controls Ducted Systems
75
70
65
-
-
-
29.8
-
-
39.5
33.2
-
49.1
42.8
36.5
-
-
-
32.4
-
-
43.1
35.4
-
53.7
46.0
38.4
51.9
44.2
36.6
-
-
-
34.9
-
-
46.7
37.6
-
58.3
49.3
40.3
56.4
47.3
38.3
-
-
-
37.5
-
-
50.3
39.8
-
63.0
52.6
42.1
60.8
50.4
40.0
39.8
-
-
53.4
41.9
-
62.8
51.2
39.6
60.6
49.0
37.4
42.0
-
-
56.6
43.9
-
62.7
49.9
37.1
60.5
47.7
34.9
-
-
-
24.6
-
-
34.2
28.1
-
39.8
33.6
27.5
-
-
-
26.6
-
-
37.4
29.9
-
43.5
36.0
28.5
42.5
35.0
27.5
-
-
-
28.7
-
-
40.5
31.6
-
47.3
38.4
29.4
46.2
37.3
28.3
-
-
-
30.7
-
-
43.7
33.4
-
51.0
40.7
30.4
49.8
39.5
29.2
32.6
-
-
46.5
35.1
-
49.9
38.6
27.2
48.7
37.4
26.0
34.4
-
-
49.2
36.8
-
48.9
36.4
23.9
47.7
35.2
22.7

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