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JOHNSON CONTROLS

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

Filter Installation

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

TABLE OF CONTENTS (CONT'D)