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25
Table 20 —
Component Pressure Drops (in. wg)
Sizes R, S, T (120-150 Ton Nominal Capacity)
LEGEND
COMPONENT
AIRFLOW (cfm)
24,000
28,000
32,000
36,000
40,000
44,000
48,000
52,000
56,000
60,000
High-Capacity Evaporator Coil (120)
0.10
0.13
0.16
0.19
0.22
0.25
0.28
0.31
0.33
0.36
High-Capacity Evaporator Coil (130-150)
0.11
0.14
0.17
0.20
0.23
0.26
0.29
0.33
0.36
0.39
Humidi-MiZer
®
System (120-150)
0.06
0.11
0.19
0.29
0.42
0.56
0.73
0.92
1.14
1.38
Hydronic Coil (120-150)
0.18
0.23
0.28
0.34
0.41
0.48
0.55
0.63
0.71
0.80
Steam Coil (120-150)
0.21
0.27
0.34
0.41
0.49
0.57
0.66
0.76
0.86
0.96
Low Gas Heat (120-150)
0.28
0.35
0.43
0.51
0.61
0.71
0.81
0.93
1.04
1.17
Medium Gas Heat (120-150)
0.35
0.44
0.54
0.64
0.76
0.88
1.02
1.16
1.31
1.46
High Gas Heat (120-150)
0.47
0.58
0.70
0.83
0.97
1.11
1.26
1.42
1.59
1.76
Electric Heat (144 kW)
0.13
0.18
0.24
0.30
0.38
0.46
0.55
0.65
0.76
0.87
Electric Heat (144 kW,
High-Static Supply Fan)
0.20
0.27
0.36
0.46
0.57
0.69
0.83
0.98
1.14
1.31
Electric Heat (265 kW)
0.15
0.20
0.26
0.34
0.42
0.51
0.61
0.72
0.83
0.96
Electric Heat (300 kW)
0.22
0.30
0.39
0.50
0.62
0.76
0.91
1.07
1.25
1.44
Electric Heat (300 kW)
0.29
0.39
0.51
0.65
0.81
0.99
1.18
1.39
1.63
1.87
FILTERS
Mixed Air Filters
4-in. MERV 8
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
4-in. MERV 14
0.34
0.40
0.46
0.51
0.57
0.63
0.69
0.74
0.80
0.86
Cartridge Filter with 2-in. Pre-Filter
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
1.40
1.50
Cartridge Filter with 4-in. Pre-Filter
0.48
0.56
0.64
0.72
0.80
0.88
0.96
1.04
1.12
1.20
MERV 14 Bag with 2-in. Pre-Filter
0.48
0.56
0.64
0.72
0.80
0.88
0.96
1.04
1.12
1.20
MERV 14 Bag with 4-in. Pre-Filter
0.36
0.42
0.48
0.54
0.60
0.66
0.72
0.78
0.84
0.90
MERV 15 Bag with 2-in. Pre-Filter
0.48
0.56
0.64
0.72
0.80
0.88
0.96
1.04
1.12
1.20
MERV 15 Bag with 4-in. Pre-Filter
0.36
0.42
0.48
0.54
0.60
0.66
0.72
0.78
0.84
0.90
Final Filters
Cartridge Filter with 2-in. Pre-Filter
0.63
0.74
0.84
0.95
1.05
1.16
1.26
1.37
1.47
1.58
Cartridge Filter with 4-in. Pre-Filter
0.51
0.59
0.67
0.76
0.84
0.93
1.01
1.09
1.18
1.26
MERV 15 Bag with 2-in. Pre-Filter
0.51
0.59
0.67
0.76
0.84
0.93
1.01
1.09
1.18
1.26
MERV 15 Bag with 4-in. Pre-Filter
0.38
0.44
0.51
0.57
0.63
0.69
0.76
0.82
0.88
0.95
HEPA with 2-in. Pre-Filter
0.76
0.88
1.01
1.14
1.26
1.39
1.52
1.64
1.77
1.89
HEPA with 4-in. Pre-Filter
0.63
0.74
0.84
0.95
1.05
1.16
1.26
1.37
1.47
1.58
Economizer Pressure Drop
0.11
0.15
0.20
0.25
0.31
0.38
0.45
0.53
0.62
0.71
High-Static PE Fan (off)
0.08
0.11
0.14
0.19
0.24
0.26
0.28
0.33
0.40
0.42
Standard PE Fan (off)
0.10
0.15
0.17
0.23
0.28
0.33
0.37
0.44
0.48
0.58
Outdoor Airflow Station
0.08
0.11
0.13
0.16
0.20
0.24
0.28
0.33
0.38
0.43
PE
—
Power Exhaust
Summary of Contents for WeatherExpert 48N2
Page 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...
Page 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...
Page 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...
Page 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...
Page 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...
Page 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...
Page 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...
Page 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...
Page 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...
Page 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...
Page 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...
Page 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...
Page 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...