5
Important Note for the State of Massachusetts
Table of Contents
Safety Information .................................... 2
Important Note for the State of
Massachusetts ........................................... 4
General Information .................................. 6
Included Items ................................................................... 6
Optional Accessories ........................................................ 6
Specifications...................................................................... 7
Rating Plate ......................................................................... 8
Dimensions .......................................................................... 9
Components .....................................................................10
Installing the Water Heater .....................12
Installer Qualifications ...................................................12
Compliance Requirements ..........................................12
Location ..............................................................................12
Connecting the Gas Supply ....................15
Gas Pipe Sizing Tables....................................................15
Gas Piping ..........................................................................16
Inlet Gas Pressure ............................................................17
Connecting the Water Supply .................18
Water Piping ......................................................................18
Pressure Relief Valve .......................................................19
Condensate Drain ...........................................................20
Condensate Trap ..............................................................21
Installing a Vent .......................................22
Vent Type ............................................................................22
Vent Pipe Materials .........................................................26
Vent Length .......................................................................26
Connecting the Vent Clip .............................................27
Vent Termination .............................................................27
Setting the DIP Switches
(for Cascade System) ...............................30
Connecting the Power Supply ................31
Self-adjusting Mode ................................32
Installation Checklist ...............................34
Appendix ..................................................36
Gas Conversion ................................................................36
Cascade System ...............................................................37
Wiring Diagram ........................................39
Component Assembly Diagrams and
Parts Lists .................................................40
Case Parts ...........................................................................40
Flue Parts ............................................................................42
Water Parts.........................................................................44
Summary of Contents for VH-150
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