North America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rim
armstrong
international.com
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit
armstrong
international.com for up-to-date information.
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Table of Contents
Safety Precautions ....................................................................................................................... 4
Installation ................................................................................................................................. 5
Site Selecton .................................................................................................................... 5
Mounting Unit ................................................................................................................... 6
Water Fill Supply .............................................................................................................. 8
Electrical Service .............................................................................................................. 8
Drainage ........................................................................................................................... 8
Gas Piping ................................................................................................................................. 8
Gas Leak Testing .............................................................................................................. 9
Combustion Air ........................................................................................................................... 10
Venting (General) ....................................................................................................................... 12
Horizontally Vented ......................................................................................................... 13
Vertically Vented ............................................................................................................. 13
Steam Distribution ...................................................................................................................... 14
Control Wiring ............................................................................................................................. 15
Control Humidistat .......................................................................................................... 15
High Limit Humidistat ..................................................................................................... 15
Air Flow Pressure Switch ............................................................................................... 16
Alarm Circuit ................................................................................................................... 16
Outdoor Enclosure Option .............................................................................................. 15
Start-Up Procedure .................................................................................................................... 22
Principal of Operation ................................................................................................................. 23
Completing a Service Life Cycle .................................................................................... 23
End of Season Drain ...................................................................................................... 23
Maintenance ............................................................................................................................... 24
Recommended Inspection Schedule .............................................................................. 24
Replacing Ionic Beds ...................................................................................................... 24
Cleaning Level Control Electrodes ................................................................................. 25
Burner Assembly ............................................................................................................ 26
Removing / Replacing Heat Exchanger ......................................................................... 27
Troubleshooting .......................................................................................................................... 28
Diagnostics ..................................................................................................................... 28
Clearing Error Codes ...................................................................................................... 29
Dip Switch Settings ........................................................................................................ 29
Wiring Schematics ...................................................................................................................... 30
Parts List
............................................................................................................................... 35
