Table Of Contents - Smith XWH 150 Instruction Manual

SAFE INSTALLATION, USE AND SERVICE.......................................... 3
APPROVALS .......................................................................................... 3
GENERAL SAFETY INFORMATION ...................................................... 4
Precautions ........................................................................................ 4
Grounding Instructions ...................................................................... 4
Hydrogen Gas Flammable ................................................................. 4
INTRODUCTION .................................................................................... 6
Abbreviations Used ........................................................................... 6
Qualifications ..................................................................................... 6
Preparing For The Installation ........................................................... 6
FEATURES AND COMPONENTS ......................................................... 7
INSTALLATION CONSIDERATIONS ................................................... 10
Rough In Dimensions ...................................................................... 10
Ratings .............................................................................................11
Determine Water Heater Location ....................................................11
Closet And Alcove Installations ........................................................ 12
Corrosive Materials And Contamination Sources ............................ 14
When Using An Existing Vent System To Install A New Water Heater
......................................................................................................... 14
When Removing A Water Heater From Existing Common Vent
System ............................................................................................. 14
Removing A Water Heater From Wood Pallet ................................. 15
Gas Conversions ............................................................................. 15
Leveling The Water Heater .............................................................. 16
VENTING INSTALLATION ................................................................... 17
Direct Venting Options - Sidewall Vent ............................................ 17
Install Vent And Combustion Air Piping ........................................... 18
Air Inatke/ Vent Connections ........................................................... 18
Sizing ............................................................................................... 19
Minimum/ Maximum Allowable Combustion Air And Vent Piping
Lengths Are As Follows ................................................................... 19
Air Inlet Pipe Materials ..................................................................... 19
Vent, Air Piping And Termination...................................................... 20
PVC/ CPVC ..................................................................................... 20
Polypropylene .................................................................................. 21
Stainless Steel Vent ......................................................................... 23
Vent/ Air Termination - Sidewall ....................................................... 24
Vent/ Air Termination - Sidewall ....................................................... 25
Sidewall Direct Venting .................................................................... 26
Multiple Vent/ Air Terminations......................................................... 27
Sidewall Termination - Optional Concentric Vent: Models 150 - 600
......................................................................................................... 28
Multiventing Sidewall Terminations .................................................. 30
Vertical Direct Venting ..................................................................... 31
Vertical Termination - Optional Concentric Vent: Models 150 - 600 33
Alternate Vertical Concentric Venting .............................................. 35
WATER HEATER INSTALLATION ........................................................ 36
System Piping .................................................................................. 36
Flow Switch And Temperature & Pressure Relief Valve (T & P Relief
Valve) Installation............................................................................. 36
Piping Components ......................................................................... 37
Gas Connections ............................................................................. 42
Natural Gas ..................................................................................... 43

TABLE OF CONTENTS

Propane (LP) Gas ............................................................................ 43
Field Wiring ...................................................................................... 46
Condensate Disposal ...................................................................... 49
START UP ............................................................................................ 50
Operating Instructions For Models 150 - 285 .................................. 52
Operating Instructions For Models 400 - 800 .................................. 53
CONTROL SYSTEM OPERATION ...................................................... 54
General ............................................................................................ 54
Sequence Of Operation ................................................................... 56
User Interface Module (UIM)/ Touch Screen Display....................... 57
Status Icons ..................................................................................... 58
Operating States .............................................................................. 59
Control System Menus .................................................................... 59
MAINTENANCE ................................................................................... 60
Maintenance Schedules .................................................................. 60
Maintenance .................................................................................... 61
WIRING DIAGRAMS ............................................................................ 64
NOTES ................................................................................................. 66
LIMITED WARRANTY .......................................................................... 67
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