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P/N 471593 Rev. C 11-1-01
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 - Natural Gas ..................................................................................................... 5
Installation Instructions—Specifications................................................................. 6
Installation — Electrical ............................................................................................................................................................. 7
Installation — Remotes (2 and 3 Wire) ...................................................................................................................................... 8 - 9
Installation — Wiring Diagram ...................................................................................................................................................10 - 12
Installation — Water Connections.............................................................................................................................................. 13
Installation — Plumbing ............................................................................................................................................................. 13
Installation — Gas Line ............................................................................................................................................................. 14
Pipe Sizing Chart/Gas Pressure Requirements ......................................................................................................................... 14
Regulated Manifold Pressure Test ............................................................................................................................................. 14
Venting — Indoor Installations ...................................................................................................................................................15 - 18
Venting — Outdoor Installations ................................................................................................................................................ 19
Basic Operation — General Description .................................................................................................................................... 20
Basic Operation — Safety Controls ...........................................................................................................................................21 - 22
Basic Operation — HSI Ignition Module .................................................................................................................................... 22
Thermostat (Programming & Layout) ........................................................................................................................................ 23
Temperature & Time Setting (Programming) .............................................................................................................................24 - 25
Maintenance ............................................................................................................................ 26
Maintenance Instructions........................................................................................................................................................... 26
Pressure Relief Valve ................................................................................................................................................................ 26
Maintenance (Water Treatment) ................................................................................................................................................ 27
Trouble Shooting ....................................................................................................... 28
Normal Operation Sequence .....................................................................................................................................................28 - 29
Troubleshooting & Service.........................................................................................................................................................30 - 31
Troubleshooting (General) ......................................................................................................................................................... 32
MiniMax NT Low NOx Parts List & Exploded View (Single Voltage) ......................................... 33-34
MiniMax NT Low NOx Parts List & Exploded View (Dual Voltage)............................................ 35-36
Warranty Information ................................................................................................. Back Cover