Table of Contents
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FORM 102.20-N1
ISSUE DATE: 7/06/2016
Vertical Tube Integral Face and Bypass (VIFB) and Integral Face and Bypass (IFB) .................................... 79
Shipping Bolts (VIFB Only) .................................................................................................................... 79
Piping Suggestions ...............................................................................................................................79
Flexible Connectors (VIFB Only) ........................................................................................................... 79
Freezing Conditions ..............................................................................................................................79
Refrigeration ................................................................................................................................................... 83
DX Direct Expansion Coils ....................................................................................................................83
Available Coil Arrangements ................................................................................................................ 85
Thermostatic Expansion Valves (TXV) .......................................................................................................... 87
Hot Gas Bypass (HGBP) ................................................................................................................................ 87
Dx Coil Circuiting and Staging ........................................................................................................................ 87
Advantages of Multiple Control Stages ................................................................................................. 88
Maintaining Adequate Airflow ....................................................................................................................... 88
VAV Systems .................................................................................................................................................. 89
Drains and Traps ............................................................................................................................................ 89
Condensate Drain Piping ......................................................................................................................89
Elevating AHU for Gravity Floor Drain Connections .............................................................................. 90
Duct Connections ........................................................................................................................................... 91
Duct Connection Guidelines .................................................................................................................. 91
Flanged Duct or Sleeves .......................................................................................................................91
Raw or Straight Edge Duct or Sleeves .................................................................................................. 91
Sound and Vibration Transmission ....................................................................................................... 92
Installing Top Discharge Outdoor AHU Duct ......................................................................................... 92
Installing Front and Rear Discharge Outdoor AHU Duct ....................................................................... 92
Air Filters ........................................................................................................................................................ 94
Maintaining and Replacing Filters ......................................................................................................... 94
Installing a 2 in. Pleated Filter ...............................................................................................................98
Installing a 4 in. Pleated Filter ...............................................................................................................98
Installing a Single Headered (SH) Filter ................................................................................................ 99
Installing a 2 in. Pre-Filter Combined with a SH Final Filter .................................................................. 99
Installing a Multi-Cell SBM Double Headered (DH) Filter .................................................................... 100
Installing a 2 in. and 4 in. Pre-Filter Combined with a DH Final Filter ................................................. 101
Hepa Filters .................................................................................................................................................. 103
Koch HEPA Filter Frame .....................................................................................................................103
Welded Bevel Seal Frame ...................................................................................................................104
Visual Control Filter Clamps ......................................................................................................................... 104
HEPA Filter Applications ......................................................................................................................104
Temperature ................................................................................................................................................. 107
JOHNSON CONTROLS
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