
TABLE OF CONTENTS | 
  | 
SECTION  | PAGE  | 
Included in the Box  | 3  | 
Hardware Packets  | 4  | 
Tools Needed  | 4  | 
Gas Specifications  | 5  | 
Specifications  | 5  | 
High Altitude Specifications  | 5  | 
Unit Dimensions  | 6  | 
Important Safety Information  | 7  | 
Safety Information for Users of   | 8  | 
Introduction  | 9  | 
Requirements for Massachusetts  | 10  | 
Termination Clearances  | 11  | 
Gas Supply  | |
Clearances  | 13  | 
Installation Instructions Overview  | 14  | 
Installation and Assembly  | |
Interior Preparation and Installation of the Back of the Unit  | |
Interior Installation of the Front of the Unit  | 20  | 
Cutting the Vent Tubes  | |
Exterior Installation of the Venting  | |
Reassembly and Resealing   | |
Installation of Optional Blower Kit HW125SCB  | |
Before Operating Appliance  | |
Operating Instructions  | 37  | 
Lighting Instructions  | 38  | 
To Turn Off Gas to Appliance  | 38  | 
Pilot Flame Characteristics  | 39  | 
Main Burner Flame Characteristics  | 39  | 
Maintenance Instructions  | 40  | 
Troubleshooting  | 41  | 
How To Order Repair Parts  | 41  | 
Parts List  | |
Parts View  | 44  | 
Service Notes  | 
Page 2  |