WARNINGS 4
Pay Attention to These Terms 4
WATER CHEMISTRY 5
Automatic Chlorinators &
Chemical Feeders 5
SAFETY 6
Water Temperature Safety 6
INTRODUCTION 6
Ratings & Certifications 6
Model Identification 7
Specifications 7
Unpacking 7
INSTALLATION 8
Installation Codes 9
Clearances 9
Base Installation 9
Outdoor Installation 9
Indoor Installation 11
Combustion & Ventilation Air 11
Gas Connections 12
Water Connections 14
Electrical Connections 16
OWNER’S OPERATING
INSTRUCTIONS 17
Control Adjustments—Analog 17
Control Adjustments—Digital 17
Thermostat Operation—Advanced Flame
Technology (AFT) Board 19
Status and Diagnostics 21
Remote Control Installation 22
Wiring Diagrams 24
Post Start-Up Inspection 25
Cold Weather Operation 25
MAINTENANCE 26
SERVICE 26
Water Pressure Switch 26
Flame Roll-Out Safety Switch 27
High Limits 27
Burner Tray Removal 28
Gas Valve Removal 28
Pilot Removal & Cleaning 29
Heat Exchanger Removal 30
Tube Cleaning Procedure 30
De-sooting Procedure 30
Replacement Parts 31
TROUBLESHOOTING 32
Mechanical 32
Electronic Control Logic Flowchart 33
Analog Control Logic Flowchart 34
ILLUSTRATED PARTS LIST 35
CONTENTS
3
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