Performance, Service reference manual troubleshooting, Performance checkout – Armstrong World Industries HWC PREMIER 183 User Manual
Page 194: Performance tests (chassis installed in unit)
Service Reference Manual
TROUBLESHOOTING
9-9
SRM-HW/HWC 8/99
Performance
Performance Checkout
HW/HWC chassis come with a pre-charged chassis assembly. The
chassis assembly is designed in a way that the unit may be run indepen-
dently of the HWC unit. When the chassis is run on a floor or bench, the
performance measurements will be affected due to the change in static
pressures, recirculated air, excessive temperatures and equal ambient
temperatures from indoor to outdoor.
Two sets of tables are provided in this section to address these issues.
Tables 9-1 to 9-4 are to be used when the chassis is still installed in the
complete unit. Tables 9-5 and 9-6 are to be used when the chassis is run
independently outside of the unit.
Note: Pressures may vary +/– 10 psi. Temperatures may vary =/– 2-3°F.
Performance Tests (Chassis Installed in Unit)
Total
Air Vol.
(CFM)
Enter.
DB/WB
Suction
Pressure
Suction
Temp.
Liquid
Temp.
Suction
Pressure
Suction
Temp.
Liquid
Temp.
Suction
Pressure
Suction
Temp.
Liquid
Temp.
Suction
Pressure
Suction
Temp.
Liquid
Temp.
Outdoor Air Temperature Entering Outdoor Coil
85°
95°
105°
115°
400
450
500
400
450
500
400
450
500
75°/63°
80°/67°
85°/71°
81
49
87
82
49
97
84
50
107
85
51
117
83
54
87
84
50
97
86
51
107
87
52
117
85
60
87
86
52
97
88
52
107
89
53
117
87
63
87
88
53
97
89
53
107
91
54
117
88
68
88
90
58
97
91
54
107
93
55
117
90
73
88
92
63
97
93
57
107
95
56
117
92
74
88
93
64
97
94
56
108
96
57
117
94
79
88
95
71
97
96
62
108
98
58
117
96
84
88
97
74
97
98
65
108
100
59
117
Based on a normally installed cooling chassis
TABLE 9-1
HWC122 Performance Test (Chassis Installed)
Total
Air Vol.
(CFM)
Enter.
DB/WB
Suction
Pressure
Suction
Temp.
Liquid
Temp.
Suction
Pressure
Suction
Temp.
Liquid
Temp.
Suction
Pressure
Suction
Temp.
Liquid
Temp.
Suction
Pressure
Suction
Temp.
Liquid
Temp.
Outdoor Air Temperature Entering Outdoor Coil
85°
95°
105°
115°
550
600
650
550
600
650
550
600
650
75°/63°
80°/67°
85°/71°
80
49
96
81
48
106
84
50
114
86
51
123
82
54
96
83
50
106
86
51
114
88
52
123
84
59
96
85
52
106
88
52
114
90
54
124
86
62
98
88
53
106
90
54
115
92
55
124
87
67
98
89
58
107
91
54
116
94
56
125
99
72
98
91
62
107
93
57
116
95
56
125
91
73
99
93
64
107
95
56
116
97
58
125
93
78
99
95
70
108
97
63
117
99
59
126
95
83
99
97
74
108
99
66
117
101
60
126
Based on a normally installed cooling chassis
TABLE 9-2
HWC182 Performance Test (Chassis Installed)