Introduction ................................................................................................................................... 5
Important Safety Information ......................................................................................................... 5
Installation ............................................................................................................................... 5-10
Location .................................................................................................................................... 5
Installation Guide ...................................................................................................................... 6
Gas Codes ................................................................................................................................ 7
Electrical ................................................................................................................................... 7
Gas Piping ................................................................................................................................ 7
Propane Gas ............................................................................................................................ 7
Natural Gas .............................................................................................................................. 8
Venting ...................................................................................................................................... 8
Draft Diverter ............................................................................................................................ 8
Water Source ............................................................................................................................ 8
Water Connection ..................................................................................................................... 8
Inspecting & Testing Gas Piping ................................................................................................ 9
Gas Pressure ............................................................................................................................ 9
Warning and Check Lists ..................................................................................................... 9-10
Operating Instructions ................................................................................................................. 11
Preventative Maintenance ........................................................................................................... 11
General Operating Techniques .................................................................................................... 11
Component Identification .......................................................................................................... 112
Maintenance & Service ............................................................................................................... 13
Heating Coil ................................................................................................................................ 13
Gas Valve Regulator Adjustment ........................................................................................... 13-14
Propane Gas .............................................................................................................................. 14
Burner Features ..................................................................................................................... 14-15
VNG Control Panel ..................................................................................................................... 16
VNG Control Panel Parts List ...................................................................................................... 17
VNG-S Exploded View, Left Side ................................................................................................ 18
VNG-S Exploded View, Right Side .............................................................................................. 19
VNG-S Parts List ................................................................................................................... 20-21
VNG-L Exploded View, Left Side ................................................................................................. 22
VNG-L Exploded View, Right Side .............................................................................................. 23
VNG-L Parts List ................................................................................................................... 24-25
CONTENTS