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P/N 472032 Rev. A 1-2-02
2
Table of Contents
Introduction ............................................................................................................... 3
Important Notices ...................................................................................................................................................................... 3
Code Requirements................................................................................................................................................................... 3
Warranty Information ................................................................................................................................................................. 4
Operation .................................................................................................................... 4
Safety Rules .............................................................................................................................................................................. 4
HSI (Hot-Surface Ignition) Lighting/Operation ........................................................................................................................... 5
Installation Instructions ............................................................................................ 6
Specifications ............................................................................................................................................................................ 6
Installation — Electrical ............................................................................................................................................................. 7
Installation — Remotes (2 and 3 Wire) ...................................................................................................................................... 8 - 9
Installation — Wiring Diagram ................................................................................................................................................... 10
Installation — Water Connections.............................................................................................................................................. 11
Installation — Plumbing ............................................................................................................................................................. 11
Installation — Gas Line ............................................................................................................................................................. 12
Pipe Sizing Chart/Gas Pressure Requirements ......................................................................................................................... 12
Regulated Manifold Pressure Test ............................................................................................................................................. 12
Venting — Indoor Installations ...................................................................................................................................................13 - 16
Venting — Outdoor Installations ................................................................................................................................................ 17
Basic Operation — General Description .................................................................................................................................... 18
Basic Operation — Safety Controls ...........................................................................................................................................19 - 20
Basic Operation — HSI Ignition Module .................................................................................................................................... 20
Thermostat (Programming & Layout) ........................................................................................................................................ 21
Temperature & Time Setting (Programming) .............................................................................................................................22 - 23
Maintenance ............................................................................................................................ 24
Maintenance Instructions........................................................................................................................................................... 24
Pressure Relief Valve ................................................................................................................................................................ 24
Maintenance (Water Treatment) ................................................................................................................................................ 25
Trouble Shooting ....................................................................................................... 26
Normal Operation Sequence .....................................................................................................................................................26 - 27
Troubleshooting & Service.........................................................................................................................................................27 - 28
Troubleshooting (General) ......................................................................................................................................................... 29
MiniMax NT Standard Parts List & Exploded View (Dual Voltage)............................................ 30-31
Warranty Information ................................................................................................. Back Cover